Reply To: How to apply a stress as an initial load state ?

[marie-charlotte.picard]

Hello, thank you for your answer. 
I try to explain my problem with figures. 

1) I have a first simulation, run with the code main.mac, which gives me the result of the displacement on the figure normal_simulation_displacement_true_scale.jpg, following the application of gravity on an embedded beam. I've chosen to use tetrahedral meshes and a Yeoh model, as this resembles my model, which is not a simple beam. On this 1st simulation, there's the command inistate,write which allows me to save the stress generated after the result of my simulation (can you please confirm?). 

2) On the 2nd simulation, run with the main_prestress.mac code, I removed the loading (gravity) and imposed the prestressing obtained in the 1st simulation with the inistate,read command. The simulation does not converge. I'd like to obtain the same result as in the 1st simulation (as shown in the photo of the results). It probably doesn't converge because the inistate command applies too high a stress to the first substep. Do you think it's possible to make this simulation converge? And if it does converge, do you think I'll get exactly the same result as the 1st simulation (because that's what I'm looking for).

3)) For the 3rd simulation, run with the code main_blocked.mac, I tried to do your method with the command DDELE,all,all,,,FORCE, but it doesn't converge either.

Any help would be appreciated. Thanks again for your answers. Charlotte.