Transactions of Materials and Heat Treatment

Title：Comparison of loading path and stress distrbution in the upsetting processes of a cylindrical billet and a concave billet

Authors： (Harbin Institute of Technology) Zhan Yanran Z. R. Wang

Unit：

KeyWords： FEM Upsetting Yield surface Loading path

ClassificationCode：TG31

year,vol(issue):pagenumber：1997,22(1):3-8

Abstract：

In this paper, FEM is used to simulate the upsetting processes for a cylindrical billet and a concave billet respectively. With the simulation results, it is obtained of the loading paths of several typica1 points in the deformation zone, and the reason is also obtained why concave billet is not easy to be fractured in the outer surface during the upsetting processes.

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Reference：

1王仲仁等.塑性加工力学基础.北京:国防工业出版社,1989。
2王仲仁,李守栋等.论屈服轨迹上的应力分区及其与塑性成形时工件尺寸变化的对应关系.金属学报,1982
3Z.R.Wang.AConsistent Relationship between theStress-and Strain-Components and Its Application for Analyzing the foe Plane-Stress Forming Process.Journal of MaterialsProcessing Technology,1995,55(1).

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