2002年2月
Maximum loads of imperfect systems corresponding to stable bifurcation
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
- 巻
- 39
- 号
- 4
- 開始ページ
- 927
- 終了ページ
- 941
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/S0020-7683(01)00232-3
- 出版者・発行元
- PERGAMON-ELSEVIER SCIENCE LTD
A simple and computationally inexpensive approach is presented for obtaining the maximum load factor of an elastic structure considering reduction of load-carrying capacity due to inevitable initial imperfections. The structure has a stable bifurcation point if no initial imperfection exists. An antioptimization problem is formulated for minimizing the maximum loads reduced by the most sensitive imperfection within the convex bounds on the imperfections of nodal locations and nodal loads. The maximum loads may be defined by bifurcation points or deformation constraints. A problem of simultaneous analysis and design with energy method is formulated to avoid laborious nonlinear path-following analysis. The stable bifurcation point is located by minimizing the load factor under constraint on the lowest eigenvalue of the stability matrix. It is shown in the examples that a minor imperfection that is usually dismissed is very important in evaluating the maximum load of a flexible structure. (C) 2002 Elsevier Science Ltd. All rights reserved.
- リンク情報
-
- DOI
- https://doi.org/10.1016/S0020-7683(01)00232-3
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000174819500007&DestApp=WOS_CPL
- URL
- http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0037170289&origin=inward
- ID情報
-
- DOI : 10.1016/S0020-7683(01)00232-3
- ISSN : 0020-7683
- SCOPUS ID : 0037170289
- Web of Science ID : WOS:000174819500007