The Most Degrading Postbuckling Mode of Pin-Jointed Structures
Publication: Journal of Engineering Mechanics
Volume 132, Issue 7
Abstract
This paper describes a numerical method which is used to determine the most unstable postbuckling mode capable of developing at the ultimate critical state of complex pin-jointed structures. In this method, the set of independent variables are the flexural shortenings of those members that are a subset of the critically loaded members in the lattice structure. This choice of independent variables greatly simplifies the analysis and promotes the evaluation of the most degrading mode under both equilibrium and collapse conditions. In this Technical Note, this method is used to evaluate these two modes for some rather simple structures. The deformed modes are plotted in each case and differences between the most degrading mode under equilibrium and collapse conditions are noted.
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References
Britvec, S. J. (1973). The stability of elastic systems, Pergamon Press, New York.
Britvec, S. J. (1995). Stability and optimization of flexible space structures, Birkhauser Verlag, Boston.
Davister, M. D. (1983). “The post-buckling equilibrium and the dynamic collapse of complex hyperstatic pin-jointed lattices and reticulated shells.” Ph.D. thesis, Dept. of Civil Engineering, Univ. of Colorado at Boulder, Boulder, Colo.
Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 132 • Issue 7 • July 2006
Pages: 775 - 779
Copyright
© 2006 ASCE.
History
Received: Aug 5, 2004
Accepted: Nov 21, 2005
Published online: Jul 1, 2006
Published in print: Jul 2006
Notes
Note. Associate Editor: Hayder A. Rasheed
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