Linear eigenvalue buckling analysis can be used to find the critical loads and
deformed shapes of 3D solid and 2D frame structures which exhibit bifurcation buckling.
Buckling elements
3D solid
- »4 & 10 node, tetrahedron
- »5 & 13 node, pyramid
- »6 & 15 node, wedge
- »8 & 20 node, hexahedron
2D frame (beam)
- »2 node, line
3D truss
- »2 node, line
3D spring
- »2 node, line
Buckling analysis
Modeling
- » mixed materials
Boundary conditions
- » point & surface loads
- » thermal loading
- » centrifugal for solids
- » self-weight for solids
- » pre-strain for truss
Results
- » buckling factors
- » mode shapes
- » animation of mode shapes