摘要
在考虑几何非线性但忽略横向剪切效应的条件下，给出了复合材料层合浅拱的动力方程，并利用迦辽金法求出了中心集中阶跃载荷作用下，一端铰支、一端固支、正交铺层的对称层合浅拱在计及初始几何缺陷情况下的动力响应，由Ｂ－Ｒ准则分析了动力稳定性。算例表明：初始缺陷对于拱的临界动力载荷有很大的影响。
In this paper,the non-linear dynamic governing equations of the generally laminated shallow arches are derived,the effects of geometric non linearity are consided but the effects of transverse shear are neglected.Using the Galerkin method,the dynamil responses are obtained for one end simply supported and another clamped symmetrically laminated shallow arch with effects of initial imperfections under concerlrated step loading,The Budiansky-Roth motion crilerion is used to define dynamic snap-through burkling loads. The results indicate that the arch is quite imperfection sensitive.
出处
《山东建筑工程学院学报》
1995年第3期1-6,共6页
Journal of Shandong Institute of Architecture and Engineering
关键词
集中阶跃载荷
非线性
动力屈曲
薄壳结构
composite material
shallow arch
dynamic buckling
concertrated step loading
initial imperfections
