Dear Sanghamitra Das,

if you want to have mechanical loading/response as well as thermal loading/response then you have to define a coupled temperature-displacement analysis step. Trying to impose mechanical boundary conditions to a thermal problem is like trying to apply thermal boundary conditions to a mechanical problem. It is possible through thermo-mechanical coupling.

Furthermore, to apply a pre-tension condition, you can define a coupled temperature-displacement step, go to Initial Fields, choose the Initial step and then on the Category -> Mechanical and on the Type -> Stress. In the pop-up window you can define the stress components required.

Regards,

Anargyros

Dear Sanghamitra Das

1) Create a Predefined Field in the initial step with the ambient Temp. Constant 15 degree. 2) Create a static step with the Load (60kN) 3) Create a Coupled Temp Displacement step, where the heating starts. The heating is defined only by Interactions (radiation and convection) which are depending on the Amplitude I defined (Temp.Curve) 4) The fourth step is like the third with a different mechanical load.

Thank you so much for your valuable suggestions. I shall try to implement the same.