Finite element (FE) modelling of storage rack frames

摘要

This paper describes a study that led to the development of an FE model for the advanced analysis of storage rack frames. The FE model is shell element-based and incorporates geometric imperfections and the semi-rigid behaviour of the pallet beam-to-upright connections. The procedure to model geometric imperfections shifts the nodes of the model according to the superimposed shapes of pure buckling modes and covers frame, member and sectional type of imperfections. The semi-rigid behaviour of connections is implemented in the model by a point-based moment-rotation relation at the intersections between members. Furthermore, the study discusses the appropriate moment-rotation curve from the available component tests to add to the model.