New Finite-Element Formulation for Buckling Analysis of Cracked Structures
Publication: Journal of Engineering Mechanics
Volume 140, Issue 5
Abstract
A crack in a steel structure will cause a local change in its stiffness. The change in stiffness will lead to a change in buckling loads and a discontinuity in the associated buckling modes. The changes in the buckling characteristics of columns cause a change in the buckling stability of the structure. The effect of cracks on the buckling load of structural systems can be investigated through numerical methods. The FEM is a well-known method for this work. In this paper, a new and innovative finite-element (FE) formulation for the buckling analysis of cracked columns is presented. The method presented is simpler and, at the same time, more accurate and practical than those available in the literature. The proposed FE formulation for cracked columns has the same format as that for intact columns. The formulation is used successfully in efficient and accurate buckling analysis of cracked frames.
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Published In
Journal of Engineering Mechanics
Volume 140 • Issue 5 • May 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Mar 19, 2013
Accepted: Oct 18, 2013
Published online: Oct 21, 2013
Published in print: May 1, 2014
Discussion open until: Jun 13, 2014
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