Pre-processing requirements for adaptive meshing

The following sections summarize the mesh and boundary condition requirements for a model on which you intend to run an Adaptivity solution process.

Supported element types

You can use adaptive meshing to refine meshes of the following general types of elements:

• Triangular elements

• Quadrilateral elements

• Tetrahedral elementsNote: If you use adaptive meshing on a model comprised of tetrahedral elements, the adaptive refinement process refines the associated surface mesh. The software then propagates those changes through the associated tetrahedral mesh.

You can include other types of elements in a model in which you use an Adaptivity solution process. However, the software ignores those element types during the refinement process. Other elements must be geometry-based if they are connected directly to adaptive meshes. During the adaptive remeshing process, the software first updates the 2D or 3D meshes, and then it updates any other geometry-based elements that are associated with those meshes.

Note:

You can also create contact or glue definitions to connect other types of elements to adaptive meshes.

Meshes must be associated to the CAD geometry

You can use adaptive meshing only on meshes that are fully associated to the underlying CAD geometry. If you try to run an Adaptivity solution process on a mesh that contains manual modifications, such as nodes that you have repositioned with the Move Node command, the adaptive meshing process does not work correctly.

Boundary conditions must be associated to the CAD geometry

You should only create geometry-based boundary conditions on the regions within models on which you intend to use adaptive meshing. The software deletes any boundary conditions that are defined directly on nodes or elements during the second adaptive iteration.

Note:

Regions with meshes that are not defined on geometry, but which are connected to CAD associated meshes, can have boundary conditions defined directly on the nodes or elements.

Learn more

Adaptive meshing

Adaptive meshing workflow

Supported solution types for adaptive meshing

Specifying accuracy parameters for adaptive meshing

Specifying the mesh parameters for adaptive meshing

Singularities in adaptive meshing

Understanding the adaptive refinement process

Excluding parts of the model from adaptive meshing

Refining specific parts of an adaptive mesh

Viewing adaptive meshing results

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Pre-processing requirements for adaptive meshing, Simcenter 3D 2021.1 Series

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