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RISS 인기검색어
- 검색키워드
- 저자 : Kiyohiro Ikeda (검색결과 2 건)
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Probabilistic analysis of buckling loads of structures via extended Koiter law
Kiyohiro Ikeda,Makoto Ohsaki,Kentaro Sudo,Toshiyuki Kitada 국제구조공학회 2009 Structural Engineering and Mechanics, An Int'l Jou Vol.32 No.1
Initial imperfections, such as initial deflection or remaining stress, cause deterioration of buckling strength of structures. The Koiter imperfection sensitivity law has been extended to describe the mechanism of reduction for structures. The extension is twofold: (1) a number of imperfections are considered, and (2) the second order (minor) imperfections are implemented, in addition to the first order (major) imperfections considered in the Koiter law. Yet, in reality, the variation of external loads is dominant over that of imperfection. In this research, probabilistic evaluation of buckling loads against external loads subjected to probabilistic variation is conducted by extending the concept of imperfection sensitivity. A truss arch subjected to dead and live loads is considered as a numerical example. The mechanism of probabilistic variation of buckling strength of this arch is described by the proposed method, and its reliability is evaluated.
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Probabilistic analysis of buckling loads of structures via extended Koiter law
Ikeda, Kiyohiro,Ohsaki, Makoto,Sudo, Kentaro,Kitada, Toshiyuki Techno-Press 2009 Structural Engineering and Mechanics, An Int'l Jou Vol.32 No.1
Initial imperfections, such as initial deflection or remaining stress, cause deterioration of buckling strength of structures. The Koiter imperfection sensitivity law has been extended to describe the mechanism of reduction for structures. The extension is twofold: (1) a number of imperfections are considered, and (2) the second order (minor) imperfections are implemented, in addition to the first order (major) imperfections considered in the Koiter law. Yet, in reality, the variation of external loads is dominant over that of imperfection. In this research, probabilistic evaluation of buckling loads against external loads subjected to probabilistic variation is conducted by extending the concept of imperfection sensitivity. A truss arch subjected to dead and live loads is considered as a numerical example. The mechanism of probabilistic variation of buckling strength of this arch is described by the proposed method, and its reliability is evaluated.
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