July 3, 2018 at 11:39 am

peteroznewman

Subscriber

Hello Venu,

Click on Static Structural and insert a Command object. In the text window that opens, type NEQIT,100 as akhemka suggested. If you used Initial Substeps of 10, change that to 20.

Click on the Solution Information folder and in the details window, type 6 for the Number of Newton Raphson Force Residual Plots. Then click Solve. A plot will be created for the last 6 attempts to converge. The location of the maximum value on those plots shows you where the solver has the largest residual force, which may be larger than the convergence criterion. The corrective action can be to use smaller element size in the area of maximum N-R Force Residual. Sandeep's post provided a link to a good article on convergence issues.