Buckling of Monosymmetric Arches under Point Loads

摘要

A finite element procedure is described for analyzing the flexural-torsional buckling of arches of monosymmetric cross-section. First an in-plane analysis is performed to obtain the distributions of axial force and bending moment in the arch. These are then substituted into the buckling equation for monosymmetric arches, and the resulting eigenvalue problem is solved numerically. Higher order quintic shape functions are used to describe the element displacement fields. The effects of the distances from the arch shear center axis of point and uniformly distributed loads are also included in the analysis.