Energy approach for dynamic buckling of shallow fixed arches under step loading with infinite duration
作者： Yong-Lin Pi , Mark Andrew Bradford , Weilian Qu
DOI: 10.12989/SEM.2010.35.5.555
关键词:
摘要: Shallow fixed arches have a nonlinear primary equilibrium path with limit points and an unstable postbuckling path, they may also bifurcation at which bifurcates from the to secondary path. When shallow arch is subjected central step load, load imparts kinetic energy causes the arch oscillate. sufficiently large, oscillation of reach its experiences escaping-motion type dynamic buckling. Nonlinear buckling two degree-of-freedom model used establish criteria for conservative systems that and/or paths then are applied analysis arches. The approach allows be determined without needing solve equations of motion.
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