FAQ 000842 IT

Calcolo RF-STABILITY

Sometimes I obtain negative critical load factors in RF-STABILITY. How do I go about this?

Risposta

If you obtain negative critical load factors in the module, increase the number of the eigenvalues (eigenvectors) to be determined. If there are not enough eigenvalues, it is not possible to hide the negative eigenvalues and thus show only positive, realistic results.

For these eigenvalues, no stability failure occurs due to tension forces and no conclusion can be made about the buckling behavior of the model.

Alternatively, you can use the ICG iteration to exclude negative critical buckling factor.

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RFEM Other
RF-STABILITY 5.xx

Modulo aggiuntivo

Analisi di stabilità secondo il metodo di calcolo agli autovalori