Structural Dynamics

Structural Dynamics

Why aren’t my nodal forces in equilbrium after a mode-sup transient analysis?

    • FAQFAQ
      Participant

      Prior to 14.0, the expansion of the mode-sup transient solution recovers only the static component of the nodal forces. The unbalanced nodal forces you see would be balanced by the inertia forces. At 14.0 MODOPT,,,,YES,,MSUPKey=YES is required to get the damping and inertia forces.