March 9, 2021 at 4:27 pm
Subscriber
nThese convergence checks are mostly independent measures of solution quality and converge at different rates. You want all three to converge to have a good solution. The default convergence values are not always appropriate. In some models, I have had to decrease the displacement convergence because it did not give me the accuracy I needed for an interference fit. Using a smaller value, 100 times smaller, gave me what I needed. Once in the last 7 years did I see a model where the moment convergence was turned off because the model would not converge, and that was from a very experienced analyst. He did many other checks to assure that the solution was still of good quality. n