Fracture prediction in stretch forming using finite element simulation combined with ductile fracture criterion |
| |
| Authors: | H Takuda K Mori H Fujimoto N Hatta |
| |
| Institution: | (1) Department of Energy Science and Technology, Kyoto University, 606-01 Kyoto, Japan, JP;(2) Department of Mechanical Engineering, Osaka University, 560 Toyonaka, Japan, JP |
| |
| Abstract: | Summary A criterion for ductile fracture is introduced in the finite element simulation of sheet metal forming. From the calculated
histories of stress and strain in each element, the fracture initiation site and the critical stroke are predicted by means
of the ductile fracture criterion. The calculations are carried out for axisymmetric stretch forming of various aluminium
alloy sheets and their laminates clad by mild steel sheets. The predictions so obtained are compared with experimental observations.
The results show that the combination of the finite element simulation and the ductile fracture criterion enables the prediction
of forming limit in a wide range of sheet metals.
Accepted for publication 11 August 1996 |
| |
| Keywords: | sheet metal forming forming limit ductile fracture criterion FEM stretch forming |
| 本文献已被 SpringerLink 等数据库收录！ |
