Volumetric locking in CPE3T elements - possible? 1

[polak7]

Is it possible, that volumetric locking will occur during compression of CPE3T elements, if the material is elastic (without plastic behaviour)? The Poisson ratio of the material is 0.3.

 

[FEA way]

CPE3T is linear coupled temp-disp plane strain triangular element.

Volumetric locking mainly occurs in second order fully integrated elements.
However first order triangles may exhibit volumetric locking with incompressible or nearly incompressible material. In your case it shouldn’t happen. But if you’re still unsure use hybrid formulation.

 

[polak7]

Thank you