Flexural-Torsional Stability Analysis of Thin-WalledBeams

摘要

Paper presents stability analysis of thin-walled beam type structures from numerical aspect.Stability is viewed as an eigenvalue problem. The new finite element is developed for the case oflarge displacements, large rotations and small strains with respect to shear deformations of thebeam cross section. Elastic and geometric stiffness matrices for this element are evaluated. Acomputer program is developed and tested on a few typical examples.