Second-Order Theory

Extension Module for the 3D FEM Calculation

This module provides two methods for the examination of stability problems:

  • Calculation of combined structures in accordance with the second- or third-order theory (equilibrium of the deformed system, small or large deformation)
  • Determination of buckling eigenmodes including the corresponding load factors

These features offer the examination of stability problems such as tilting, buckling and lateral torsional buckling for beam, shell and solid structures.

In particular, the graphical representation of the buckling eigenmodes allow to estimate the stability behavior of complex structures easily.