24/12/2011

1

Meshing

Interactive Meshing Environment

The Free Mesher

Mapped and Swept Meshes

Geometry Kernels and CAD file formats CAD for FEA

Importing CAD files Import of parts and assemblies

Repair and Defeaturing

Overview

24/12/2011

2

Automatic and interactive meshing

Free tetrahedral

Boundary layer

Mapped

Swept

Mixed

Adaptive

Model courtesy Metelli S.p.A.

Free Mesher

Unstructured mesh with triangular or quadrilateral elements in 2D and tetrahedral elements in 3D

Most general mesher (no constraints on the geometry)

Automatic or user control of parameters

24/12/2011

3

Mapped Mesh

Quadrilateral (quad) elements

2D or faces in 3D

Regular grid mapped onto the real geometry

Swept Mesher

Prism or hexahedral (block) elements

Sweeping from several source faces for circular and straight

sweep paths

Control the mesh on the source face and the distribution in the

sweep direction

24/12/2011

4

Boundary Layer Meshing

Region of dense mesh along specified boundaries

Layered quadrilateral mesh in 2D

Layered prism or hexahedral mesh in 3D

24/12/2011

5

24/12/2011

6

Adaptive meshing

24/12/2011

7

Hands-on Exercise

Learn how you can use the meshing sequence.

Learn how to create structured meshes using the swept mesher.

Hands-on Exercise

Learn how to use the free mesher and its parameters

Minimum element size

Resolution of curvature

Resolution of narrow regions

Element growth rate

Check the mesh quality

24/12/2011

8

Hands-on Exercise

Learn how you can create structured meshes using the

mapped and swept mesher.

If Meshing of Part Fails

Identify problem boundaries

Change the mesh parameters Useful parameters are maximum element size, resolution of narrow regions

Use the defeaturing tools

Modify geometry object in CAD program

24/12/2011

9

Meshing