Title: Analysis of the bulging in shape rolling by combined 3D-FEM with slab method

Authors: Su-Hai Hsiang, Sheng-Li Lin

Addresses: Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, ROC. Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan, ROC

Abstract: In the simulation of bulging in shape rolling, for the purpose of CPU time saving, a complex method which combined the 3D-FEM with the slab method was developed in this paper. In this model, the deformation zone in the billet was divided into several proper slabs according to the shapes of boundary, and each slab was analysed by 3D-FEM. Then, the equilibrium of the longitudinal force and the condition of volume consistency were applied. Finally, the tendency of metal flow, roll pressure, stress and strain rate can be calculated. Compared with the traditional 3D-FEM, the results of this complex model were acceptable. This model had the merit of saving computation time and memory capacity, and it was also very suitable for performing in personal computers.

Keywords: 3D-FEM; slab method; shape rolling; bulging; cavity radius.

DOI: 10.1504/IJMPT.2000.001258

International Journal of Materials and Product Technology, 2000 Vol.15 No.6, pp.458-470

Published online: 01 Jul 2003 *

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