Quadrilateral Finite-Element Generation and Mesh Quality Control for Metal Forming Simulation

International Journal for Numerical Methods in Engineering, Wiley, Vol 40, pp.4059-4075, 1997

MESHING
RESEARCH
CORNER

Department of Mechanical Engineering, Gyeongsang National University, Chinju, Korea, 660-701
Staff of the Research Center for Aircraft Parts Technology

Abstract
An improved looping method for quadrilateral finite element generation, effective especially for automatic metal forming simulation, was presented in this paper. A new splitting criterion to improve the conventional looping method, an artificial boundary scheme to reduce mesh transition regions and an optimal nodal placement scheme to enhance local and global mesh quality were introduced in the standpoint of metal forming engineering. Various application examples were given, which show versatility and applicability of the presented approaches and the developed mesh generator. Application examples including automatic computer simulation of a forging process showed that the presented approaches are powerful for metal forming simulation.