Influence of FE modeling on ultimate strength of Y-shape stiffened panels under axial compression

Abstract

A series of FE analyses are conducted to investigate the influence of boundary conditions and model range on the ultimate strength and bulking behavior with Non-linear FE (finite element) method. Models that have same section size and include different number of stiffeners are used in research about influence of extent of model and choosing a portable extent of model. Another set of models with same section size and extent are applied different boundary conditions including simply supported boundary, clamped supported boundary condition and periodical boundary condition. The effects of the continuity of the stiffened panel with different geometric models and boundary conditions on its collapse mode are investigated.