Towards Robust, Effective and Efficient Second Order Analysis of Practical Steel Frames

by S. L. Chan, Hong Kong Polytechnic, Hong Kong, Hong Kong,
Z. W. Zhou, Hong Kong Polytechnic, Hong Kong, Hong Kong,
W. F. Chen, Hong Kong Polytechnic, Hong Kong, Hong Kong,

Document Type: Proceeding Paper

Part of: Structures Congress XII


The performance of the widely used finite element and the stability function methods and the recently developed pointwise equilibrating element in second order nonlinear analysis of framed structures is studied. This type of rigorous analysis will automatically consider the effects due to change of geometry as well as the variation of member stiffness in the presence of axial load (the P-? and the P-? effects). An efficient element for the analysis will be essential for the development of a reliable and practical computer program for second order analysis of steel frames.

Subject Headings: Finite element method | Steel frames | Steel structures | Structural analysis | Structural reliability | Axial loads | Structural members

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