Nonlinear analysis of anisotropic shells

Abstract

In the presence of large deflections, bifurcations, and load and displacement limit points, the analysis of arbitrary anisotropic shells requires the adoption of incremental and iterative procedures. In many cases the load-displacement curves may exhibit unstable branches followed by stable equilibrium paths. The true response is dynamic in nature. However, a full dynamic analysis is impractical and expensive. Thus in most cases a fully static solution or a combined static and dynamic solution is performed. The latter must be able to predict and pass critical limit points and predict collapse loads. The state of the art in current solution algorithms is given by Papadrakakis [80] and Crisfield [81].