March 17, 2023 at 9:00 amFAQParticipant
You can first use OUTPR,NSOL,1 to see the modal covariance table in the output. The contribution of a negative quantity on the diagonal can be evaluated by reading the mode in POST1 with a factor equal to the square root of the variance. The stresses obtained this way can be compared to the 1 sigma values for relevance.
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