Ansys Learning Forum › Forums › Discuss Simulation › General Mechanical › How to apply a stress as an initial load state ? › Reply To: How to apply a stress as an initial load state ?
Hello,
I'll try to explain my problem differently. In the figure, on the left, you can see the displacement of a beam embedded on the left and subjected to gravity along -y. At the end of the simulation, we use the command “inistate,set,node,1 inistate,write,1,,,,,S”. The figure on the right shows the displacement of the same beam embedded on the left, but without gravity. We just impose the prestress obtained in the previous step with the command “inistate,set,node,1 inistate,read,file_name_simu1.ist”. When the material coefficient of Yeoh's C10 law is high enough, both simulations converge. My questions are as follows:
1) Why are the displacements between the 2 simulations not the same (in values)?
2) Why are the displacements not the same (in direction): simulation 1 takes the beam towards -y and the 2nd towards +y, why?
3) Could you please explain what exactly the inistate command does?
Remember that my aim is to obtain exactly the same results between the 2 simulations. In addition, I'd like to reduce C10 (to have a much softer material, like on the figures in my last post). Unfortunately, as the deformation is too great, the 2nd simulation won't converge (even if I set nsubst,1000,1000,1000). And I can't see how kbc,0 would improve convergence, as it seems to me that the inistate, read command applies the initial stress to the first sub-iteration of the 1st iteration, right?
Thanks again for your feedback.
Charlotte.