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Title: Should load remain constant when a thin-walled open-profile column buckles?
Authors: Alwis, W.A.M. 
Wang, C.M. 
Issue Date: Nov-1994
Citation: Alwis, W.A.M.,Wang, C.M. (1994-11). Should load remain constant when a thin-walled open-profile column buckles?. International Journal of Solids and Structures 31 (21) : 2945-2950. ScholarBank@NUS Repository.
Abstract: This paper addresses the fundamental question of whether the applied load should necessarily be assumed to remain constant for bifurcation buckling analysis of thin-walled open-profile columns via the work-energy approach. The constant load condition has been recently used as a fundamental requirement for a valid analysis by Goto and Chen (1989, Int. J. Solids Structures 25, 621-634) to dispute a theory proposed by Ojalvo (1989, ASME J. Appl. Mech. 56, 633-638). This paper establishes that neither constant load nor constant distance need be insisted upon for a valid analysis. It is permissible to assume either constant load or constant distance (or any other compatible configuration with second order changes in loads and distance) for a valid analysis. It is essential to ensure that the appropriate strain energy and work expressions are adopted. © 1994.
Source Title: International Journal of Solids and Structures
ISSN: 00207683
Appears in Collections:Staff Publications

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