Post Buckling Behavior And Imperfection Sensitivity Of Space Trusses With Multiple Eigenmodes

拟议的调查将制定一种方法， 对于任何晶格类型的结构，最差的缺陷形状，如 以及一个简单的关系， 缺陷和相应的承载能力下降 这对于小缺陷是渐近精确的。 这将 通过Lyapunov-Schmidt-Koiter分解实现 其次是渐近结果，以及迭代 一种允许不完美的极限点的数值技术 结构的变化，而在大小和/或形状的变化， 产生缺陷（或其它设计参数）。

The proposed investigation will develop a methodology to determine the worst shape of imperfection for any lattice type structure, as well as a simple relationship between the magnitude of the imperfection and the corresponding drop in a load carrying capacity that is a asymptotically exact for small imperfections. This will be achieved by means of the Lyapunov-Schmidt-Koiter decomposition followed by asymptotic results, as well as by an iterative numerical technique which allows the limit point for the imperfect structure to be traced while changes in the size and/or shape of the imperfection (or other design parameter) are made.