For this kind of initial value problem, there are lots of discussion over it. However, I still fail to figure out the way to do it.
Here is my simple test, I created one study including two stationary steps to figure out how this works. So I create a membrane fixed at four sides, which means when a pressure is applied on it, it could only deform in z- direction. In the first step, I apply a boundary load on it and disable another boundary load. In the second step, I disable the first boundary load and enable the second one. For the result, I can't see these two boundary load adds up on the membrane at the same time. I end up getting two seperate result from each step.
What I tried is to change the setting of "values of dependent variables", method:solution, study:study1, stationary. However, it still doens't work in my case.
Is there anyone knowing what setting i miss?
