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"Too many attempts made for this increment" error

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The model is underconstraimed. Run a frequency analysis and you will see the rigid body motions at frequencies close to 0 Hz.
 
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You can try increasing the number of increments or you can reduce the min value or increment size in Step.
 
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In this case, it won't help - the problem behind non-convergence has to be solved first by eliminating rigid body motions.
 
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