Wednesday, December 07, 2005

MSC.Nastran : Thermal Stress Analysis with TET10 Elements

Running a thermal analysis with TET4 elements gives better results than TET10, but when perfoming a structural analysis later, TET10 elements are preferred. How does one get around this.

Here's the trick :

If you use geometry for modeling, be mindful not to delete the mesh used for capturing the temperatures. One technique would be to
1) Create the course mesh using geometry.
2) Run the thermal analysis and create the Continuous FEM Field of the temperatures.
3) Disassociate all FEM from geometry.
4) Place the course mesh used by the Continuous FEM Field into a separate group.
5) Remesh the geometry for the structural analysis.
6) Map the temperatures from the Continuous FEM Field on the new mesh.


No comments: