Imperfection sensitivity analysis of hill-top branching with many symmetric bifurcation points

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:43

Article

Ohsaki, Makoto ; Ikeda, Kiyohiro

关键词: coincident buckling;    hill-top branching;    imperfection sensitivity;    member buckling;    symmetric bifurcation;   

DOI  :  10.1016/j.ijsolstr.2005.06.036

来源: Elsevier

【 摘 要 】

Imperfection sensitivity properties are derived for finite dimensional elastic conservative systems exhibiting hill-top branching at which arbitrary many bifurcation points coincide with a limit point. The critical load at a hill-top branching point is demonstrated to be insensitive to initial imperfections when all the bifurcation points are individually symmetric. Therefore, it is not dangerous to design a frame or truss so that many members buckle simultaneously at the limit point, although the notion of the danger of optimization by compound bifurcation is widespread. (c) 2005 Elsevier Ltd. All rights reserved.

【 授权许可】

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