Collapse Analysis: Large Inelastic Deformations Analysis of Planar Frames
Publication: Journal of Structural Engineering
Volume 128, Issue 12
Abstract
In an attempt to trace the collapse of structures in seismic events, this paper discusses an alternative approach to the formulation and solution of the large deformation inelastic problem in planar frame structures. A beam–column element that includes the effect of geometric and material nonlinearities is developed using the flexibility approach. The formulation uses force interpolation functions and the principle of virtual forces in rate form. It is formulated in the context of the state space approach, where the global system of conservation equations and the local constitutive equations are solved simultaneously. The differential-algebraic system solver is used to solve the resulting system of equations. Numerical examples are presented to illustrate the functionality of the analysis using the newly formulated approach.
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Information
Published In
Journal of Structural Engineering
Volume 128 • Issue 12 • December 2002
Pages: 1575 - 1583
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Jul 5, 2001
Accepted: Feb 6, 2002
Published online: Nov 15, 2002
Published in print: Dec 2002
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