Influence of Friction on Metal Flow Behaviour and Die Stress of Backward Extrusion

Abstract:

In the paper, the Deform-3D software was used to simulate the mechanism of metal flow behaviour under the influence of different friction in the backward extrusion process, and further study its influence on die stress. The numerical simulation demonstrates that: smaller friction could reduce difficult deformation area of extrusion metal significantly; friction state not only affected the plastic deformation extent, but also would increase the consumption of extrusion energy; the unit pressure of punch and stress of inner wall increased along with the increase of friction, meanwhile, the ratio of them increased as well.

• Periodical: Applied Mechanics and Materials (Volumes 117-119)
• Pages: 1719-1722
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.117-119.1719
• Online since: October 2011
• Authors: Yong Shun Yang, Tian Tian Yin, Ke Feng
• Keywords: Die Stress, Friction, Metal Flow Behaviour, Numerical Simulation

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