Adaptive FE-analysis of column supported Reissner- Mindlin plates

摘要

An adaptive finite element program based on the Zienkiewicz-Zhu error estimator, superconvergent patch recovery of stress (SPR) and displacement (SPRD) and an efficient advancing front mesh generator has been applied to plate bending analysis. The most accurate and effective error estimation is to use SPRD for the bending moment part and SPR for the shear part. This paper reports on the implementation and a numerical experiment on a real life engineering problem; a column-supported car park slab. Further, studies concerning the behavior of plates and ideas of how to get an improved solution in the `disturbed regions' (boundaries, column-plate intersections etc.),where the plate theory in itself is in error, are presented.