Comparing geometry idealization and geometry abstraction

Geometry idealization and geometry abstraction operations are similar in their intent. Both allow you to specifically tailor the geometry to the needs of your analysis. However, the two are fundamentally distinct processes that operate on different aspects of your model.

Geometry idealization

You perform geometry idealization operations on the idealized part. Geometry idealization lets you simplify and streamline your model, for example, by removing or suppressing unnecessary features. For example, you can:

• Add features to the idealized part to facilitate the analysis.

• Split a larger volume to facilitate the meshing of that volume.

• Create a midsurface on a thin-walled part to facilitate 2D meshing.

Note:

The idealized part cannot contain non-manifold geometry conditions (a condition in which a single edge is shared by two or more faces, as in a T-type intersection).

For more information, see Polygon geometry.

Geometry abstraction

You perform geometry abstraction operations on the polygon geometry within the FEM file. Geometry abstraction lets you eliminate issues with the CAD geometry that can cause undesirable results when you mesh your model. For example, you can use geometry abstraction commands to:

• Remove very small surfaces or small edges from your model that can degrade element quality in that region.

• Add geometry to your model for use in the analysis. For example, you can add edges to the polygon geometry to either control the mesh in that region or to define additional edge-based loads or constraints.

Note:

Polygon geometry can contain non-manifold geometry conditions.

Learn more

Geometry abstraction and polygon geometry

Polygon geometry

Polygon geometry versus lightweight facet bodies

Understanding CAD issues reported during FEM creation

How edges are represented in a solid model

Modeling tolerance values

Understanding the geometry abstraction process

Displaying suppressed edges in polygon geometry

Checking CAE model consistency

Naming of polygon bodies, meshes, and properties

Tools for identifying and repairing polygon body problems

Synchronizing polygon body names and attributes to the CAD geometry

Controlling polygon body tessellation

Polygon body update process

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Related Topics

Generating surface wrap bodies and meshes

Comparing geometry idealization and geometry abstraction, Simcenter 3D 2021.1 Series

© 2020 Siemens

window.mainLanguage="en_US"

window.delivId=""

window.projectId=""

MathJax.Hub.Config({ TeX: { extensions: ["autoload-all.js"] }, tex2jax: { displayMath: [ ] }, "SVG": { scale: 125 } });