v7.22.121 HSNV121 - Traction in large plastic deformations of a bar under thermal loading#
Summary:
This semi-static thermomechanical test consists in uniformly heating a bar with a rectangular (\(\mathrm{3D}\)) or cylindrical (\(\mathrm{2D}\) axisymmetric) cross section and then subjecting it to traction. We thus validate the kinematics of large deformations in plasticity (command STAT_NON_LINE, keyword DEFORMATION: “SIMO_MIEHE” or “PETIT_REAC”) for a behavior relationship under large deformations with linear isotropic work hardening (command STAT_NON_LINE, keyword RELATION: “VMIS_ISOT_LINE” and “VMIS_ISOT_TRAC”) with thermomechanical loading. With shell or plate models, large plasticity deformations are accessible using the keyword DEFORMATION: “PETIT_REAC” as long as the rotations remain low.
The bar is modeled by a solid element (HEXA20, ModelingA) or quadrangular element (QUAD4, for axisymmetric modeling, ModelB) or by plate or shell elements (DKT for modeling C) or by elements of a plate or shell (for modeling C and COQUE_3D for modeling D).
The solution is analytical.