| || Adaptive meshing for deep drawing process
Author : Ahmed, Mohd;Sekhon, G. S.
Source : Defence Science Journal ; Vol:53(1) ; 2003 ; pp 51-56
Subject : 620.1 Material Science and Technology
Keywords : Adaptive meshing;Deep drawing;Finite element analysis;Large deformations
Abstract : "The paper incorporates the concept of adaptive meshing for finite-element analysis of the deep-drawing process. In adaptive meshing, the mesh is automatically refined both in the areas of insufficient accuracy and sharp stress gradients. The Zienkiewicz-Zhu error estimator based upon the difference between the finite-element solution and the corresponding smoothened solution is used to judge the accuracy both at the element and the global levels. The post-processing for determining more accurate solutions is done by fitting a higher order polynomial expansion to the finite-element solution in nodal patches. An illustrative problem is solved and the adaptive refinement at differention is presented. "