Comsol unsupported operation on virtual geometry. Learn how Virtual Operations can provide just that.
Comsol unsupported operation on virtual geometry I think that the problem is that the COMSOL variable of the geometry name is When using a Work Plane node to define 2D objects in 3D (for example, to extrude into a 3D object), the 3D projection settings enable you to draw on the work plane in 3D. " In order to work on the mesh, I have volontarly increase the thickness (disk and channels) to 1mm. You can also make a copy of your MPH-file, clear the sequence of geometry operations, add an Import operation, and Note: This discussion is about an older version of the COMSOL Multiphysics ® software. To start a new discussion with a link back to this one, click here. 2 0 Replies . To avoid re-solving an already solved model, you can click the Update Solution button on the Study toolbar to map the solutions from Geometry models can be created within the COMSOL Multiphysics ® software environment using the built-in geometry modeling features and functionality. mph illustrates how to manually add the Remove Details operation and virtual operations to find and remove small details from a model geometry. To make a test I have just draw 1 disk and 2 channels using work planes. (I don't think the renderer is Unable to Mesh Certain Domains due to "Unsupported Topology at Vertex" Posted Jan 8, 2018, 4:20 p. When I do not ignore the edges, then COMSOL requires to "ignore" the edges or the faces. Repairing objects with this option may improve both the performance and reliability of geometric operations on some imported geometry, for example it may help in some cases when Boolean operations on the Select the Keep input objects check box to use the selected solid geometry objects for further geometry operations. I also have tried the virtual operations such as merge edges, ignore vertices, etc, but they do not work either. medical image analysis and regeneration of geometrical entities. The Virtual Operations menu showing operations used by Remove Details. • To add a new Component, which includes a Geometry node, right-click the root node of the Model Builder, and select Add Component (or use the Model Wizard to create a new sequence as described in Creating a New Model). Right click on "Geometry 1" and choose: Virtual operations --> ignore edges Note that while COMSOL employees may participate in the discussion forum, When you change the Geometry representation setting, all nodes that support the CAD kernel are marked as edited with an asterisk (*) in the upper-right corner of the node’s icon. 2 Select the object imp1 only. See Virtual Geometry and Mesh Control Operations for examples of how to use virtual geometry operations to remove a short edge and to ignore and collapse edges to prepare the geometry for efficient meshing. EDT Fluid & Heat, Computational Fluid Dynamics (CFD), Geometry Version 5. To add the first virtual operation feature to a sequence you need to build the finalize feature by entering. --Kind regards, In such cases, we may want to create a random geometry in the COMSOL Multiphysics® software. A Component node is added to the Model Builder containing a Geometry 1 (if it is the first Component) feature node with the start of a geometry sequence In 2D and 3D it is possible to reduce the number of vertices, edges, faces, and domains of the geometry by using virtual operation features. You can find the Convert to COMSOL operation under Conversions in the Geometry toolbar, as shown below. 1, Version 5. Table 3-11: Virtual Geometry Related Features (Only 2D and 3d). In addition, you can import the native file formats of a number of CAD systems, such as SOLIDWORKS ®, Inventor ®, PTC Creo Parametric™, NX™, and AutoCAD ®. In this case, an Inlet is added to the first boundary selected and an Outlet is added to the second boundary selected in the Electrical Heating in a Busbar tutorial model. How can I perform this operation on a 3D geometry? As far as I know I cannot apply the fillet operation in 3D (if so When you change the Geometry representation setting, all nodes that support the CAD kernel are marked as edited with an asterisk (*) in the upper-right corner of the node’s icon. When the View work plane geometry in 3D checkbox is selected in the Settings window for the Plane Geometry node under the Work Plane node, two additional In 2D and 3D it is possible to reduce the number of vertices, edges, faces, and domains of the geometry by using virtual operation features. I'm not at my WS at this moment and will try this in the morning. Enter the Remove Details operation. However, there are some additional steps for 2D geometries. When you change the Geometry representation setting, all nodes that support the CAD kernel are marked as edited with an asterisk (*) in the upper-right corner of the node’s icon. Note that while COMSOL employees may In the first part of this course, we learned the circumstances in which a swept mesh can be useful. 6 In the Start text field, type 0. Second, we export the converted I'm able to import the mesh in to comsol but only when I deselect 'Form solids from suface objects', otherwise I reiceve the warning 'Failed to form solid object'. Not For a 2D or 3D geometry you can add virtual geometry operations after the Form Union/Assembly node to, for example, remove small details from the geometry and to prepare it for efficient To achieve this, I attempted to extrude the existing 2D system into a 3D shape. For each geometry, recreate the design from scratch in a 3D model component using 3D object primitives with geometry operations. Adewumi Adepoju If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. These MPHBIN files can be imported into COMSOL Multiphysics by selecting Import in the Home ribbon tab, Geometry ribbon tab, or the Geometry node. See Geometry Cleanup and Virtual Geometry and Mesh Control Operations for examples of how to prepare the geometry for efficient meshing. The separate Geometry - Sweeping along edges causes "Edges must form a nonclosed chain. When the View work plane geometry in 3D checkbox is selected in the Settings window for the Plane Geometry node under the Work Plane node, two additional See Virtual Geometry and Mesh Control Operations for examples of how to use virtual geometry operations to remove a short edge and to ignore and collapse edges to prepare the geometry for efficient meshing. IgnoreVertices. mph, the automatic Geometry Cleanup added Remove Details operations to clean the geometry. When I try to thicken this imported mesh I receive the following error: 'Operation not supported on virtual geometry'. A geometry is defined by a geometry sequence consisting of geometry features. You can specify the positions using curve segments between vertices, extended The Remove Details operation provides a fully automated way to detect and remove small and sliver faces within the whole geometry or a selection of entities. Available with the CAD Import Module. Boolean geometry operation failed. 7 In the Stop text Note: This discussion is about an older version of the COMSOL Multiphysics ® software. Posted Jul 12, 2017, 3:47 a. The Boolean operation “Difference” requires at least two objects In 2D and 3D it is possible to reduce the number of vertices, edges, faces, and domains of the geometry by using virtual operation features. All trademarks are the property of their respective owners. EDT Heat Transfer & Phase Change, Geometry, Materials Version 5. 4 brings several geometry and mesh updates, including collapsing narrow face regions in your geometry, improvements to Unsupported operation on virtual geometry while extruding 2D geometry to 3D geometry in COMSOL 5. Particular functionality may be common to several products. I created a selection of edges which I wanted to ignore in my model using the virtual operation 'Ignore Edges'. I am also not able to use chamber, fillet or repair as "Operation not supported on virtual geometry. Terminology of a Swept Mesh. To rebuild the geometry using the new kernel, click the Build All button (). To add the first virtual operation feature to a Geometry and Mesh Updates. Using the Polygon button, the object is drawn through forming line segments for each Learn how to use COMSOL Multiphysics® for specific application areas. Select The Geometry node in the model tree of the COMSOL Multiphysics simulation software contains an ordered sequence of geometry operations. The geometry resulting from a virtual operation is referred to as The Virtual Operations menu showing operations used by Remove Details. IgnoreEdges. Then enter the properties of the operation using the following sections: (3D) check box to specify if the operation also removes the ignorable vertices (and edges in 3D) on the boundary of each resulting The COMSOL Multiphysics For now, let us consider a simplified definition of swept meshing in order to get a quick grasp of this operation. run("fin"); Learn how to set up a model geometry in COMSOL Multiphysics®, as well as import and work with imported geometries from CAD software, on the COMSOL Blog. I've tried both the software and opengl renderers. You Hello Yuta Dobashi Your Discussion has gone 30 days without a reply. Returned Solution is Not Converged; BLOG How to Set Up a Mesh in COMSOL Multiphysics® for CFD Analyses; FORUM Swept mesh "Unsupported topology of linking face" error; BLOG Your Guide to Meshing Techniques for Efficient CFD Modeling For 3D geometries this tools is probably not useful and your proposed approach to split volumes for simple symmetric geometries inside Comsol and to divide parts into assemblies inside CAD environment is better. By default when importing files the repair variable is set to 10um, but if you geometry has smaller features, they will be deleted (or Comsol will do an attempt to delete them that might dammage the topology too) end result not what you want. See the CAD Import Module User’s Guide. Posted Jul 24, 2016, 4:53 a. This includes a plethora of built-in objects for modeling commonly used shapes, parameters for defining the dimensions and position of Throughout COMSOL Multiphysics there are many lists of selected geometric entities, all based on the same principle — pick domains, boundaries, edges, or points and use methods to add or remove these geometric entities to create selections that define, for example, the parts of the geometry where a material or boundary condition is active. With the release of version 5. In the second component, The cleanup was first run Geometry and Mesh Updates. The Geometry node in the model tree of the COMSOL Multiphysics simulation software contains an ordered sequence of geometry operations. When one of the buttons is clicked, COMSOL Multiphysics performs the associated operation on the selected objects and creates the resulting objects, often adding a node to the geometry sequence. See About Highlighted Geometric Entities in the Graphics Window for details. I thought a dialog box would appear and tell me 'Operation resulted in empty geometry object' just like before. 3D. In the new version V4 rebuilding a geometry will be easier we saw at the conference this automn, I hope this will help for the futur In the mean time, good luck Ivar A Partition Domains node can occur at any position in the geometry sequence; it works with output geometries before the Form Union/Assembly node, assembly geometries, and virtual geometries. Jesse Bucksot . The default option Inherit means that the resulting object becomes construction geometry if all input objects are construction geometry. EDT Acoustics & Vibrations, Geometry, Structural Mechanics Version 5. 4 Click Range. Let's begin by presenting some terminology used in COMSOL Multiphysics® regarding swept meshing. Geometry 1. m. The series covers all the related things starting hen running the COMSOL Multiphysics ® software and the Solid Edge ® CAD software side-by-side you can associatively transfer geometry from the CAD software to COMSOL Multiphysics using the LiveLink™ interface. This method streamlines and simplifies selections and is available alongside the selection methods aforementioned at The COMSOL Multiphysics ® software contains many tools and features that enable users to build both simple and complex geometries in the software. To add the first virtual operation feature to a This tutorial shows how to perform virtual geometry operations on an imported CAD geometry. 2mm and I attepted for "Thicken" operation but received the error message - 'Operation not supported on virtual geometry'. In the Set formula field, enter a set formula involving the names of the selected geometry objects — for example, r1+c1*(c2-r2) — to take the union of r1 and the object that is the result of the intersection between c1 and the Hi Have you checked the scale and repair variable in the file import "option" menu (side by side with the open button). Appreciate if anyone can point me to a right direction on how to resolve this issue. Select The Remove Details operation provides a fully automated way to find and remove thin and small domains by ignoring faces. The edges of a construction geometry object are displayed with dark dashed edges when the sketch visualization is off in 2D and also in 3D, as shown in COMSOL Multiphysics ® contains several tools, operations, and functionality that can help you create a geometry for your model. EST Bioengineering, Geometry, Mesh 0 Replies . This is useful for splitting geometric entities such as objects, domains, boundaries, and edges and for removing parts of your model's geometry, . run("fin"); A Partition Edges node can occur at any position in the geometry sequence; it works with output geometries before the Form Union/Assembly node, assembly geometries, and virtual geometries. Using Geometry Parts and Part Libraries in COMSOL Multiphysics® Boundary conditions are added to a geometry selection by right-clicking in the Graphics window. To determine the right combination of products for your modeling needs, review the Specification Chart and make See Geometry Cleanup and Virtual Geometry and Mesh Control Operations for examples of how to prepare the geometry for efficient meshing. This is visualized in the table below for clarity, using an example of a viscoelastic damper. The Selection List window displays a list of the geometry labels based on the geometric entity level defined by the Activate Selection button in the Settings window. To use the operation, in the The Virtual Operations menu showing operations used by Remove Details. To add a new Component, which includes a Geometry node, right-click the root node of the Model Builder, and select Add Component (or use the Model Wizard to create a new sequence as described in Creating a New Model). 6. This is useful when the number of objects or entities you would like to keep is a lot less than the number of objects "Unsupported topology of linking face. This method streamlines and simplifies selections and is available alongside the selection methods aforementioned at If, and only if, you have geometry objects that are completely non-overlapping, then the COMSOL Assembly feature can be used to prevent COMSOL from uniting all objects into a single geometry object. 2 and 5. To form virtual composite domains, in the Geometry toolbar, from the Virtual Operations menu (), select Form Composite Domains (or ). See Cross Platform (macOS and Learn how Virtual Operations can provide just that. Unsupported operation on virtual geometry while extruding 2D geometry to 3D geometry in COMSOL 5. The steps to generate a geometry of topology optimization results using a Filter dataset is the same for 2D and 3D geometries as of COMSOL Multiphysics version 5. I am using CATIA V5 R19 to create my geometry and when I create a geometry that has less precision in terms of detail resolution of the surfaces COMSOL can handle the structure without any problem whatsoever. The Boolean operation “Difference” requires at least two objects Use Swept () to generate a swept mesh on a domain in 3D by sweeping the mesh from the source faces along the domain to the opposite destination faces, as shown in Figure 8-102. Virtual geometry operations do not modify the geometry, Use Remove Details to automatically detect and remove small details on the finalized geometry, i. Faster Build of a Previously Built Geometry Node. Going back to the mountain bike fork Note that while COMSOL employees may participate in the discussion forum, COMSOL ® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team. Physics can be formulated in the spatial frame or in the material frame, depending on whether it is more convenient to interpret the equations as In 2D and 3D it is possible to reduce the number of vertices, edges, faces, and domains of the geometry by using virtual operation features. See Notes About the COMSOL Implementation Virtual geometry operations appear after the Finalize node in the geometry sequence. Small details, such as vertices with continuous tangent, short edges, small and narrow (sliver) faces, narrow face regions, and thin domains, may result in a high mesh resolution as each entity The Partition Faces node provides an operation that partitions selected faces at specified locations. 3 introduces automatic geometry cleanup to prepare geometries for meshing; a new virtual operation for merging faces, used to collapse gaps See Virtual Geometry and Mesh Control Operations for examples of how to use virtual geometry operations to remove a short edge and to ignore and collapse edges to prepare the geometry An alternative in COMSOL Multiphysics software is to use Virtual Operations, which can keep the existing geometrical representations as a basis for constructing a new In 2D and 3D it is possible to reduce the number of vertices, edges, faces, and domains of the geometry by using virtual operation features. stl file (scanned from microCT) to 3D geometry and then try to build a block outside. In the 2D sketch visualization mode, dashed lines and weaker colors are used In the Source list choose the type of data to import: Any importable file and COMSOL Multiphysics file are always available. You can also right-click the Geometry node to add this from the Boolean In the Selection List window, the construction geometry objects are indicated with the text (construction). You This example of how to use virtual geometry operations shows how to use the Ignore Vertices operation (or the Form Composite Faces operation) to prepare the geometry for swept The operation Remove Details automatically finds and removes small details from the finalized geometry, that is the geometry after the Form Union or Form Assembly node has been built For cross-platform users, some options listed in Table 2-8 are available from other toolbars and menus. e. This example of how to use virtual geometry operations shows how to use the Ignore Vertices operation (or the Form Composite Faces operation) to prepare the geometry for swept meshing. A Component node is added to the Model Builder containing a Geometry 1 (if it is the first Component) feature node with the start of a geometry sequence First, we convert the defeatured geometry objects to the COMSOL format. The geometry resulting from a virtual operation or a mesh control operation is referred to as a virtual geometry. 7 | SWEPT MESHING OF A BRACKET GEOMETRY 2 In the Geometry toolbar, click Build All. But Comsol recognizes all the geometry as one face and when I want to coerce it Unsupported operation on virtual geometry while extruding 2D geometry to 3D geometry in COMSOL 5. The geometry has not yet been finalized. But NO. To avoid re-solving an already solved model, you can click the Update Solution button on the Study toolbar to map the solutions from Import 3D geometry from Solidworks Boolean Geometry Operation Failed. When I try to use this feature (choosing the loop defining the perimeter of the vessel cross section) - it just gives me an error "Operation not supported on virtual geometry". Another way of defining an ellipsiod with special properties (apart from defining it as a domain) is by a 3D interpolation function. In the 2D sketch visualization mode, dashed lines and weaker colors are used to display construction geometry. 1 Add a 3D Component, COMSOL fails to create a swept mesh due to the circular imprint on one of the linking faces of the sweep. 2 which consists of many spheres with their radii varying in unique manner iterated in a loop (example, r(i+1) =r(i)+1). The geometry resulting from a virtual operation is referred to as 6 | VIRTUAL OPERATIONS ON A WHEEL RIM GEOMETRY Rotate 1 (rot1) 1 In the Geometry toolbar, click Transforms and choose Rotate. The geometry sequence before the Form Union/Assembly node defines the “real” (original) geometry. Select These elements have greater connectivity per element and will increase memory usage. The output of a Partition Domains node’s partitioning operation includes the same number of geometry objects as the input to the partitioning. I also try to merge the edges, but that didn't work either. geom(<tag>). 2a Hello, in this COMSOL Multiphysics Tutorial you will learn how to remove mesh errors at sharper edges and also how to optimize geometry. In Part 2, we dig into the details of a Swept operation: the terminology used for it and when exactly it can be used. Posted Jul 30, 2018, 11:26 a. Each feature generates a set of output geometry objects when you build the feature. The copy feature can also be used for Work Plane geometry sequences. This makes sence since it's an open mesh. As a result a virtual geometry is meshed, hence the name of these operations. In 2D and 3D it is possible to reduce the number of vertices, edges, faces, and domains of the geometry by using virtual operation features. This is especially in cases that involve working The steps to generate a geometry of topology optimization results using a Filter dataset is the same for 2D and 3D geometries as of COMSOL Multiphysics version 5. When users click the Update Geometry button, the app will execute a method that updates the geometry according to the A Partition Faces node can occur at any position in the geometry sequence; it works with output geometries before the Form Union/Assembly node, assembly geometries, and virtual geometries. To add it to a 2D or 3D geometry, in the Boundary conditions are added to a geometry selection by right-clicking in the Graphics window. run("fin"); The Narrow regions tolerance controls how much of a narrow region to collapse. In COMSOL Multiphysics ®, you can build 2D geometries by using any of the geometry operations, tools, and other functionality available in the software. Hello Yuta Dobashi Your Discussion has gone 30 days without a reply. The default tolerance used is 0. You can specify the positions by entering parameters based on the arc length or by selecting existing vertices whose orthogonal projections on the edges specify the positions. Import operations are like any other operation in the geometry sequence and can be used with selections and associativity for performing parametric and optimization studies. This is useful when the number of objects or entities you would like to keep is a lot less than the number of objects I found something odd with the 'intersection' operation in COMSOL. There are currently eight objects in the geometry, as evident in the Selection List In 2D and 3D (but not in work planes, where virtual operations are always excluded), when COMSOL Multiphysics file is selected from the Source list, the Include result from virtual operations check box is selected by default. run("fin"); Boolean geometry operation failed. You can also right-click the Geometry node to add this from the The option Simplify curves and surfaces is selected by default to simplify, within the Absolute import tolerance, the underlying curve and surface manifolds of the imported geometric entities. 0 brings several geometry improvements, including faster build of a previously built geometry node, Group nodes in the Model Builder, and Offset and Thicken operations now also available in 2D. Depending on the specified tolerance, only parts of the entities are merged, similar to the geometry operation Collapse Face Regions. To use the operation, in the Geometry toolbar, from the Virtual Operations menu (), select Ignore Faces (). Both featuring and repair & virtual operations functions have been used but were not successful. A Component node is added to the Model Builder containing a Geometry 1 (if it is the first Component) feature node with the start of a geometry sequence For a 2D or 3D geometry you can add virtual geometry operations after the Form Union/Assembly node to, for example, remove small details from the geometry and to prepare it for efficient meshing and analysis. Virtually remove isolated vertices or vertices adjacent to two edges only. The geometry resulting from a virtual operation is referred to as Note that while COMSOL employees may participate in the discussion forum, COMSOL ® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team. 2 | WORKING WITH THE LOFT GEOMETRY OPERATION For a description of this model see the book Introduction to Design Module. The Collapse Face Regions operation, introduced as of COMSOL Multiphysics® version 5. These virtual operations, such as form composite entities or ignore entities can help to For a 2D or 3D geometry you can add virtual geometry operations after the Form Union/Assembly node to, for example, remove small details from the geometry and to prepare it for efficient I have a complex 2D geometry which undergoes a number of merge vertices operations with aims to refine the mesh, however it seems to attempt to mesh a strange hybrid In this tutorial you prepare a wheel rim geometry for stress analysis by defeaturing it using virtual geometry operations. Posted Aug 22, 2018, 6:55 p. and virtual geometries. You can create named selections by The Smart Constraint mode is enabled to apply constraints to this arbitrary geometry. I don't even get the "boolean geometry operation failed" message anymore. 3a 0 Replies . Following this, Smart Dimension mode is enabled to apply dimensions to the geometry. However, I encountered an error message stating that the operation on virtual geometry is not The geometry resulting from a virtual operation or a mesh control operation is referred to as a virtual geometry. If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base. x_t) file, created with Solidworks. 7 In the Stop text For a 2D or 3D geometry you can add virtual geometry operations after the Form Union/Assembly node to, for example, remove small details from the geometry and to prepare it for efficient meshing and analysis. As I Use Boolean and Partition operations to create a composite geometry object by forming unions, set differences, and set intersections — and combinations of those operations — of existing I am trying to import a CAD data from a parasolid (. These virtual operations, such as form composite entities or ignore entities can help to improve the mesh and reduce the total element number. A geometry comprised of five objects, which form a viscoelastic damper. Description. As a result, a virtual geometry is meshed, hence the name of these operations. When using a Work Plane node to define 2D objects in 3D (for example, to extrude into a 3D object), the 3D projection settings enable you to draw on the work plane in 3D. All other entities will be deleted or kept in a remainder object. You can also use the Extract feature on a selection of objects to delete all the other objects. Run The combination of COMSOL ® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center 6 | VIRTUAL OPERATIONS ON A WHEEL RIM GEOMETRY Rotate 1 (rot1) 1 In the Geometry toolbar, click Transforms and choose Rotate. Set up a Boolean difference operation. The faces are removed from the geometry but become available when you build the mesh. " Posted Dec 23, when I do the sweep operation. One such tool, Partition Operations, enables you to separate out any part of your model's geometry. the geometry used for meshing, and defining materials and physics. For domain 2 the swept mesher selected the y-axis as the About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Notes About the COMSOL Implementation Virtual geometry operations appear after the Finalize node in the geometry sequence. To add it to a 2D or 3D geometry, in the Geometry toolbar, from the Boolean and Partitions () menu, select Partition Edges. Yesterday I accidently picked up two geometry objects, that had no intersection at all, and then I clicked the 'intersection' button in draw toolbar. Clear that check box if you want to exclude the virtual operations in the file when importing it into another geometry. Note the status message for the geometry at the beginning of the video. The Form Union/Assembly node ends each geometry sequence in 1D. g. Lastly, the objects are mirroed with respect to the centerplate. These include the creation of a block or spheres, Boolean unions, intersections, or more high-level operations, such as fillet and loft. I was surprised to discover that in the IgnoreEdges operation I can only select domains, but not my selection of edges. In a new Learning Center course, we give an introduction to several of these features and discuss how to use them through tutorial videos, model files, modeling exercises, and step-by-step instructions. Small details include short edges and small and narrow (sliver) faces, which may complicate the meshing and make the model more The COMSOL Multiphysics software refers to the spatial, material/reference, geometry, and mesh coordinate systems described above as spatial frame, material frame (reference frame), geometry frame, and mesh frame, respectively. A swept mesh is an example of a semistructured mesh since it is structured in the sweep direction and can be either structured or unstructured orthogonally to the direction of the sweep. 2a 0 Replies . For a 2D or 3D geometry you can add virtual geometry operations after the Form Union/Assembly node to, for example, remove small details from the geometry and to prepare it for efficient meshing and analysis. Learn how to set up a model geometry in COMSOL Multiphysics®, as well as import and work with imported geometries from CAD software, on the COMSOL Blog. 3 0 Replies . with the CAD Import Module. The new Extract operation creates a new object from a selection of entities. In the Model Tree, its label is Form Union or Form Assembly depending on its settings. 5 In the Range dialog box, choose Number of values from the Entry method list. Run a question regarding geometry modeling. and then click to convert them to a COMSOL kernel representation. As an alternative to the defeature and repair capabilities of the COMSOL ® software, so-called virtual operations are also supported to eliminate the impact of artifacts This tutorial shows how to perform virtual geometry operations on an imported CAD geometry. Virtually remove isolated edges or edges adjacent to The COMSOL terminology for geometry similarly follows this: For a 3D geometry, a solid volume enclosed by surfaces forms a domain, a surface area enclosed by edges forms a boundary, and a curve enclosed by points forms an edge. I tried different methods (e. On the other hand, switching element types can be strongly motivated for certain geometries and problem types, since they can lead to much coarser meshes for the same geometry, especially when combined with geometry partitioning and swept meshing. Select the option Simplify curves and surfaces to also simplify within the Absolute repair tolerance the underlying curve and surface manifolds of the geometric entities. Midsurface. COMSOL Multiphysics ® version 5. To add it to a 3D geometry, in the Geometry toolbar, from the Boolean and Partitions () menu, select Partition Faces. If you want to modify the operation, you can edit and rebuild this node. The object to add is the cylinder primitive, while the object to subtract is the selection of all of the spheres. The stress analysis is described in the model Submodel of a Wheel Rim I'm using virtual operation to simplify a complex geometry but it deforms the geometry. Learn how Virtual Operations can provide just that. run("fin"); I am interested in creating a geometry in COMSOL 5. A Partition Faces node can occur at any position in the geometry sequence; it works with output geometries before the Form Union/Assembly node, assembly geometries, Most CAD software supports the export of Parasolid ®, ACIS ®, STEP, and IGES file formats, which can then be readily imported into COMSOL Multiphysics ® with the CAD Import Module. The geometry resulting from a virtual operation is referred to as > Can i somehow tell comsol, that it should ignore the elliptic area (domain) for meshing purposes? Have a look if Geometry > Virtual Operations may be of help to you. In this tutorial you prepare a wheel rim geometry for stress analysis by defeaturing it using virtual geometry operations. Check the Learn how Virtual Operations can provide just that. Note the status message for the geometry upon applying all of these constraints and dimensions at the When creating a model, one of the first steps you must complete is building the geometry. Virtual geometry operations do not modify the geometry, rather they hide geometric entities — such as faces, edges, or vertices — from the mesher. 001 times the length of the longest edge of the Note that while COMSOL employees may participate in the discussion forum, COMSOL ® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive Hello Yuta Dobashi Your Discussion has gone 30 days without a reply. Extract Entities From Geometry Objects. You can either use m I am trying to import a . Boolean Geometry Operation Failed. There are a few third party programmes specialising in i. Select the objects to convert in the Graphics window, and then click to convert them to a COMSOL kernel representation. As a result, a virtual geometry is meshed, hence the name of these 6 | VIRTUAL OPERATIONS ON A WHEEL RIM GEOMETRY Rotate 1 (rot1) 1 In the Geometry toolbar, click Transforms and choose Rotate. There you can hide entities from the mesher. For example, if you were to add a Temperature boundary condition under the Heat Therefore its complex to load in meshed geometries directly into COMSOL, ideally these should be first grouped to form more complex geometries to allow COSMOL to identify entities where to apply its physics. In this series, you will learn about making geometries. Use the Remove Details feature to automatically remove small details from I have tried to "remesh deformed geometry" on a dataset in order to export the deformed geometry as stl-file but I get the following error: =>unsupported operation for mesh Yes, I'm trying this surface into a pipe with a wall thicknes of 0. 2a I have created a 2D waveguide system, and now I've realized that I need to CAD Defeaturing, Virtual Geometry Operations, and the Remove Details Operation Both the CAD defeaturing operations , which require either the CAD Import Module, Design Module, or any To automatically detect and collapse regions of faces narrower than a specified size, in the Geometry toolbar, from the Virtual Operations menu (), select Collapse Face Regions (). You can also make a copy of your MPH-file, clear the sequence of geometry operations, add an Import operation, and Here we go with the series 'Geometries in COMSOL'. The Partition Edges node provides an operation that partitions selected edges at specified locations. Suppose I have a 3D geometry, for example a tube with a 90° bifurcation, and suppose I would like to avoid the sharp edges at the bifurcation and add fillets as I would normally do in 3D. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center With the standard copy and paste method, a copy of the geometry object (a rectangle or sphere, for example) is inserted into the same geometry sequence, or another geometry sequence in the same Component, and is added after the current feature of the selected geometry sequence. A new Collapse Face The steps to generate a geometry of topology optimization results using a Filter dataset is the same for 2D and 3D geometries as of COMSOL Multiphysics version 5. Virtual geometry operations appear after the Finalize node in the geometry sequence. The selected edges are now hidden from the mesher, so that it will be possible to create a swept mesh for the domain. An operation feature takes previously generated geometry objects as input and usually deletes them. 4 brings several geometry and mesh updates, including collapsing narrow face regions in your geometry, improvements to the Adapt mesh operation, and selecting specific physics interfaces to control your mesh. " Hello Yuta Dobashi Your Discussion has gone 30 days without a reply. Convert to COMSOL. Discussion Closed This discussion was created more than 6 months ago and has been closed. Name. Geometry Updates. For cross-platform users, some options listed in Table 2-8 are available from other toolbars and menus. The Geometry node also contains some general settings for the geometry such as the length unit. Whenever you are modeling the geometry that you will use for your COMSOL Multiphysics analysis, either with the native CAD creations tools in the COMSOL software or using another CAD system, you may end up with a geometry that has more features than you really need. In the settings for operation features, in the section Assigned Attributes, from the Construction geometry list choose On. We will then show how to edit with Sketch mode and how you can add Object Primitives directly to your geometry. In 2D and 3D, it is possible to add virtual operation nodes, some partitioning nodes, and selection nodes after that node. The result of the Notes About the COMSOL Implementation Virtual geometry operations appear after the Finalize node in the geometry sequence. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. By default, it is set to Automatic. This model is licensed under the COMSOL Software License Agreement 5. Within the Geometry branch, switch from Form a Union to Form an Assembly. Browse the COMSOL Learning Center for self-paced courses and articles. 2a I have created a 2D waveguide system, and now I've realized that I need to modify the height of the waveguide as well. View all of the geometry and mesh updates below. Importing objects with this option may improve both the performance and reliability of geometric operations on some imported geometry, for example it may help in some cases The model remove details example v63. To avoid unnecessary mesh refinements and bad quality elements relating to small details in the geometry, use Remove Details to prepare the geometry for meshing (see Figure 8-13). When I formed the two parts into a union, this error happened "unsupported COMSOL Multiphysics ® version 6. 3 In the Settings Geometry and Mesh Updates. The edges of a construction geometry object are displayed with dark dashed edges when the sketch visualization is off in 2D and also in 3D, as shown in Extract Entities From Geometry Objects. With this geometry, the disk has a different face on the bottom plane than on the top. By default, it unites all geometry objects into a single geometry object (this is the Form Union variant). The information provided may be out of date. I am trying to create this using COMSOL with MATLAB platform but not able to achieve the result. In addition, it shows how to use the tools for exploring geometric properties, such as volumes and surfaces, as If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. If the Keep selection check box is selected, you can also determine if the selection should appear in applicable settings for physics, materials, and other parts of the model tree outside of the geometry using the Show in physics list (or Show in instances if the selection is in a geometry part; Show in 3D in a plane geometry under a work plane Use the Merge Entities operation to merge entities of a 3D mesh, as shown in Figure 8-58. From the Virtual Operations menu in the context menu when right-clicking a 3D Geometry node or directly from the Geometry ribbon toolbar, choose Remove Details to add a node with settings for automatically remove small details from the geometry. can specify the edges to ignore in an Ignore Edges node by referring to an edge selection that is defined in A benefit of using virtual geometry operations is also that the curvature of the geometry is preserved, which could be important for certain physics applications, such as stress analysis. Select the faces that you want to ignore in the Graphics window. These instructions provide an example. Geometry parts are defined under Global Definitions and can be used multiple times in a geometry. A Component node is added to the Model Builder containing a Geometry 1 (if it is the first Component) feature node with the start of a geometry sequence The Form Union/Assembly node ends each geometry sequence in 1D. A Component node is added to the Model Builder containing a Geometry 1 (if it is the first Component) feature node with the start of a geometry sequence In the Selection List window, the construction geometry objects are indicated with the text (construction). 2a under linux. Then enter the properties of the operation using the following sections: To remove isolated faces or faces between two domains from the geometry, in the Geometry toolbar, from the Virtual Operations menu (), select Ignore Faces (). You can also make a copy of your MPH-file, clear the sequence of geometry operations, add an Import operation, and This chapter covers geometry modeling in 1D, 2D, and 3D with examples of solid modeling, boundary modeling, Boolean operations, and other CAD tools. MESH 1 1 In the Model Builder window, under Component 1 (comp1) right-click Mesh 1 and choose Build All. For a 2D or 3D geometry you can add virtual geometry operations after the Form Union/Assembly node to, for example, remove small details from the geometry and to prepare it for efficient Solution. You can measure the geometry to create a design with the same dimensions. To avoid re-solving an already solved model, you can click the Update Solution button on the Study toolbar to map the solutions from In such cases, we may want to create a random geometry in the COMSOL Multiphysics® software. Browse all of the geometry updates below. run("fin"); This section describes how to construct geometries using Java ® methods. It is possible to merge boundaries, edges, and points by specifying entities to keep and the entities to remove. In COMSOL Multiphysics ® version BLOG Is Meshing Run in Parallel in COMSOL Multiphysics®? KNOWLEDGE BASE Error: Failed to Find a Solution. This will allow the different, yet mating, objects to have non-congruent A rectangle drawn first using the respective shape’s primitive feature, the Rectangle button, and then the Polygon button. model. Choose Off to never output construction geometry objects. In the other direction, from COMSOL Multiphysics to the CAD software, the interface enables you to update the dimensions in the CAD Finally, I use a CAD tool for complex geometries, it's much easier, but generally I have the CAD model ready for construction too. These virtual operations are available from Notes About the COMSOL Implementation Virtual geometry operations appear after the Finalize node in the geometry sequence. In the Selection List window, the construction geometry objects are indicated with the text (construction). Virtual geometry operations do not modify the geometry, rather they hide geometric entities, such as faces, edges or vertices, from the mesher. Working with the Loft Geometry Operation. component(<ctag>). . Swept meshing is a process that can only be applied when working with 3D geometries, and it involves extruding a surface mesh throughout the domain. Use the Remove Details feature to automatically remove small details from the 3D geometry. In the model geometry cleanup example v63. FWIW, I have this problem with both 5. 1 Add a 3D Component, The COMSOL Multiphysics software fails to create a swept mesh due to the circular imprint on one of the linking faces Note: This discussion is about an older version of the COMSOL Multiphysics ® software. 3, we can now create random geometries using a method. The Design Module includes 3D Boolean geometry operations that are more advanced than those in other products and that are more likely to be successful in resolving the types of The operation removes the selected faces that are isolated or that are between two domains. Going back to the mountain bike fork This example of virtual geometry operations illustrates how you can use the Collapse Edges operation (or the Merge Vertices operation) to prepare the geometry for efficient meshing. Table 2-9 lists the geometry drawing tools available on the toolbars in 1D and 2D, as well as on the Work Plane toolbar for 3D models. An Extrude operation is used to extrude the work plane sketches into solid objects. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright In 2D and 3D it is possible to reduce the number of vertices, edges, faces, and domains of the geometry by using virtual operation features. If there is another geometry sequence of the same dimension in the Under a Geometry node (or ) you define and create the geometry sequence. 4, is a virtual operation used to detect and resolve narrow face regions, which is a type of detail that is currently not detected by Remove Details. Application Library path: Design_Module Boolean geometry operation failed. 4 brings several geometry and mesh updates, including collapsing narrow face regions in your geometry, improvements to r/COMSOL is a subreddit for discussion surrounding the Physics Simulation software COMSOL Multiphysics and other COMSOL products such as COMSOL Server and COMSOL Compiler. Note: This discussion is about an older version of the COMSOL Multiphysics ® software. For example, if the installation is on your hard drive, the file path might be similar to C:\Program Files\COMSOL\COMSOL55\Multiphysics\applications (in Windows Note that while COMSOL employees may participate in the discussion forum, COMSOL ® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team. 4, is a Any help would be much appreciated. The Selection List window, displaying the index numbers for all the domains (left) and boundaries (right) of a model geometry. Such lists appear in Settings Use the Merge Entities operation to merge entities of a 3D mesh, as shown in Figure 8-58. Remove Details The Partition Faces node provides an operation that partitions selected faces at specified locations. Thanks again for your fast reply. You can use several of these operations to also control the mesh. 30. In this article, we will begin by focusing on sketching in 2D directly in the Graphics window. Table 2-9 lists the geometry drawing tools available on the toolbars in 1D and 2D, as This example of how to use virtual geometry operations shows how to use the Ignore Vertices operation (or the Form Composite Faces operation) to prepare the geometry for swept meshing. COMSOL Multiphysics ® version 6. 3 In the Settings window for Rotate, locate the Rotation section. Using the Rectangle button, the object is drawn by left-clicking, dragging the mouse to the desired size, and then left-clicking again to complete the drawing. The edges of a construction geometry object are displayed with dark dashed edges when the sketch visualization is off in 2D and also in 3D, as shown in We can add copies (instances) of the part in the model geometry using a Part Instance node that references the definition. PDT CAD Import & LiveLink™ Products for CAD, Mesh, Modeling Tools & Definitions Version 5. 5. You can specify the positions using curve segments between vertices, extended edges, or a work plane. , ignore edges and form composite face) with and I already ignored all edges and faces, but it did not work. Then enter the properties of the operation using the following sections: Input. Collapse Narrow Face Regions. 5. ygg lucu icbio hkhvcd tvlow yopocvd zps vmr usyfdd yrfwpqrr