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Static equilibrium

Hamed Hani
Hello Adams Community,
 
I am using Adams MaxFlex to run a nonlinear simulation.
 
I am generating the bulk data file in my code and importing the resulting `BDF` file into my model.
 
My model runs perfectly fine when I use a coarse mesh size like this image(the diameter of the circle is 4 cm):
5
But, as soon as I try a finer mesh size (dividing by 2) like this image, I get static equilibrium simulation convergence error(I don't change anything else about the model).
10
I tried to tweak the solver settings as it is suggested in this article:
 
 
I tightened and loosened the limits on translations (TLIMIT) and rotations (ALIMIT) while I relaxed the error, but had no success getting the simulation to converge. I increased the MAXIT value for convergence, but still no success.
 
Does anyone have any idea what might cause this problem?
 
solver
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  • 0
    Hello,
     
    Thank you very much! I set the imbalance to a very large value. The static simulation failed to converge, but the dynamic simulation ran successfully. I see a very large force value at the initial time step, but the rest of the simulation appears to be fine. Does it matter to reach a static equilibrium before running the dynamic simulation?
     
     
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  • 0
    Hello,
     
    Thank you very much! I set the imbalance to a very large value. The static simulation failed to converge, but the dynamic simulation ran successfully. I see a very large force value at the initial time step, but the rest of the simulation appears to be fine. Does it matter to reach a static equilibrium before running the dynamic simulation?
     
     
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