Learning Forum

[Leon15]

Hello,

After going through the ANSYS Mechanical APDL Element Reference I couldn't find any thermal elements having an higher order in only one direction, I was wondering if there is a way to reproduce this behavior without the calculation cost of fully quadratic elements.

Thank you

[Chandra Sekaran]

There is no built-in method to model high order in one direction only. If your mesh is a well aligned high order brick mesh (solid279), then you can drop midside nodes in two directions.  However there is no automated way to drop midside nodes in one direction though. You can use the EMOD command in APDL to modify the element definition. The documentation for solid279 says "An edge with a removed midside node implies that the temperature varies linearly, rather than parabolically, along that edge."

[Leon15]

 

Hello, thanks for the quick answer. I tried deleting all the mid nodes on elements (solid279) as a test using the following command:

MODMSH,DETACH

EMID,REMOVE,ALL

However, it is not doing anything. Am I missing something? Also, not sure to see how EMOD (EMODIF?) can be helpful in this case.