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논문 기본 정보

자료유형
학술저널
저자정보
Pi, Yong-Lin (School of Civil and Environmental Engineering, Faculty of Engineering and Information Technology, University of Technology) Bradford, Mark Andrew (School of Civil and Environmental Engineering, Faculty of Engineering and Information Technology, University of Technology) Qu, Weilian (Key Laboratory of Roadway Bridge and Structural Engineering, Wuhan University of Technology)
저널정보
테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제35권 제5호
발행연도
2010.1
수록면
555 - 570 (16page)

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Shallow fixed arches have a nonlinear primary equilibrium path with limit points and an unstable postbuckling equilibrium path, and they may also have bifurcation points at which equilibrium bifurcates from the nonlinear primary path to an unstable secondary equilibrium path. When a shallow fixed arch is subjected to a central step load, the load imparts kinetic energy to the arch and causes the arch to oscillate. When the load is sufficiently large, the oscillation of the arch may reach its unstable equilibrium path and the arch experiences an escaping-motion type of dynamic buckling. Nonlinear dynamic buckling of a two degree-of-freedom arch model is used to establish energy criteria for dynamic buckling of the conservative systems that have unstable primary and/or secondary equilibrium paths and then the energy criteria are applied to the dynamic buckling analysis of shallow fixed arches. The energy approach allows the dynamic buckling load to be determined without needing to solve the equations of motion.

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