Strategy: Improving Convergence
If an analysis does not converge, the problem is typically due to a few unconverged element edges located in specific areas of the model.
• Define a p-level plot for that analysis and use
Dynamic Query to identify the locations of the edges with maximum p-levels.
• Consider whether the high p-level is due to a local singularity. If so, you can address the problem by spreading the constraints or loads over a larger area or excluding noncritical elements from the convergence check.
• If these techniques are not an option, then break up the model into smaller elements in the critical areas that did not converge. Although this method can be tedious, it is a reliable way of improving convergence.