Eigenvalue buckling prediction

Eigenvalue buckling analysis:

  • is generally used to estimate the critical (bifurcation) load of “stiff” structures;

  • is a linear perturbation procedure;

  • can be the first step in an analysis of an unloaded structure, or it can be performed after the structure has been preloaded—if the structure has been preloaded, the buckling load from the preloaded state is calculated;

  • can be used in the investigation of the imperfection sensitivity of a structure;

  • works only with symmetric matrices (hence, unsymmetric stiffness contributions such as the load stiffness associated with follower loads are symmetrized); and

  • cannot be used in a model containing substructures.

The following topics are discussed:

Related Topics
Defining an analysis
General and perturbation procedures
About static stress analysis procedures
In Other Guides
Configuring a buckling procedure
Creating and modifying prescribed conditions