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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.
Return to Convergence Method or To Set Convergence for a Structural Analysis.