Title: Influences of loading paths on thickness of aluminium alloy cup with Hydro-mechanical Deep Drawing

Authors: Yongchao Xu, Yu Chen, Shijian Yuan

Addresses: Harbin Institute of Technology, P.O. Box 435, Harbin, Heilongjiang 150001, China. ' Harbin Institute of Technology, P.O. Box 435, Harbin, Heilongjiang 150001, China. ' Harbin Institute of Technology, P.O. Box 435, Harbin, Heilongjiang 150001, China

Abstract: On the basis of hydro-mechanical deep drawing, loading paths to improve the thickness uniformity of cup with a hemispherical bottom were investigated. With numerical simulations and experiments, optimisation of loading paths was carried out. Deformation process and thickness distribution were obtained and the influences of loading paths on thickness distribution were analysed. The results show that there exist two typical points to get thin. With the optimal loading path, the helpful friction force between the punch and the blank improves the stress state of two typical points, serious thinning is reduced, furthermore thickness is more uniform and forming limit is raised.

Keywords: aluminium alloys; HDD; hydromechanical deep drawing; loading paths; thickness uniformity; fracture; cup thickness; simulation; deformation; friction force; stress; thinning; forming limit.

DOI: 10.1504/IJMPT.2010.032098

International Journal of Materials and Product Technology, 2010 Vol.38 No.2/3, pp.173 - 183

Available online: 10 Mar 2010 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article