Research on nonlinear, postbuckling and elasto-plastic analyses of framed structures and curved beams

摘要: Nonlinear analysis of structures is an effective way for predicting the bearing capacity or ultimate strength a structure. This paper will review researches on nonlinear, buckling, postbuckling and elasto-plastic analyses three-dimensional (3D) framed structures. Also considered are curved beams since they share problem joint equilibrium in simulation. The following key issues to be covered this paper: (a) analytical semi-analytical approaches; (b) formulation incremental-iterative nonlinear analysis; (c) 3D frames at deformed configuration; (d) rigid body test finite elements; (e) rigid-body-qualified geometric stiffnesses derivation; (f) simulation buckling beams; (g) steel frames; (h) mechanism iterations incremental (i) recovery element forces; (j) path-tracing scheme response. In paper, theories methods solving responses involving multi-loop curves considered. fact, procedure and/or inelastic can greatly simplified if it well rooted physics. Namely, rule fully obeyed each stage analysis, then entire made simpler more efficient. Recently, was demonstrated that satisfactory results obtained response number using elastic stiffness alone. A total 154 references cited paper.