I write a thermomechanical user material in Abaqus to solve an adiabatic problem. Firstly, I tried to model and analyse this case using a linear elasticity also write a user material (UMAT, UMATHT and HETVAL) but unfortunately I cannot reach the write solution, for a cube with insulation (there in not heat flux) and subjected to uniaxial tension the temperature for the element should be decrease but in my analysis the temperature was constant and equal to initial temperature.
When eth solid body is subjected to a displacement-control uniaxial loading according to the conservation of energy the temperature should be decreased exponentially, it decreases in the case of compression. I understand that I sould add rpl as the heast generation source to the user material but i did it by writing hetval.
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