FAQ 002108 ES

Cálculo RFEM RSTAB 8.xx

When trying to calculate a result combination, I receive the "Warning No. 30014 - Unacceptable addition of load cases in reculs combination! The result combination includes load cases or load combination with result according to the second-order theory with nonlinear relations and thus, they cannot be added [...]". What does this mean exactly?

Respuesta

This warning appears in case of the following definition variants of result combinations:


  • LC/S + LC/S

  • factor * LC/S or factor * LC/S


Detailed explanation is possible on the second definition variant, for example: A load combination was calculated according to the second-order analysis. Results show a nonlinear relation, which should not involve doubled axial force with doubled moment at the same time, for example. Now, if you add a factor to the lod combination results, it multiplies each internal force. This conflict (nonlinear calculation of results and the subsequent linear multiplicartion) causes the warning appears.

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RFEM Programa principal
RFEM 5.xx

Programa principal

Software de ingeniería estructural de análisis por elementos finitos (AEF) para sistemas estructurales planos o espaciales compuestos de barras, placas, muros, láminas, sólidos y elementos de contacto

RSTAB Programa principal
RSTAB 8.xx

Programa principal

El software de ingeniería estructural para el análisis y dimensionado de estructuras de barras, pórticos y entramados realizando cálculos lineales y no lineales de los esfuerzos internos, deformaciones y reacciones en los apoyos