Reply To: Help to do quasistatic analysis in static structural module

[peteroznewman]

The process I provided was to import 127 rows of time history into the pressure load, you must follow a different process to obtain convergence.

The highly distorted error message contains some good advice which you should follow. Try incrementing the load more slowly (increase the number of substeps or decrease the time step size). You know where to find that.  It is helpful to first look at the Force Convergence plot under the Solution Information folder. The graph shows you what time the solver ran into problems converging. The graph also shows you how many times the automatic time stepping algorithm used bisection to reduce the time increment. You can also change the plot to show the size of the time increment vs time.

Another piece of advice in the error message mentions that you may need to improve the mesh. However, you need to know where on the mesh the solver is having difficulty converging. To see that, edit the Analysis Settings. Click on the Solution Information folder and on the line that says Newton-Raphson enter a number, say 3.  This will make 3 contour plots under this folder that show you where on the mesh the force imbalance was largest for the last three iterations. If there are large elements there, you may need smaller elements or if the elements are of low quality, you may need to improve the shape.