Transactions of Materials and Heat Treatment

Title：Comparison of the calculation methods for the necking stress of the cone-shaped concave die

Authors： HU Cheng-wu 1 LUO Wen-bo 2 PENG Yan-rong 2 (1.School Mechanical Engineering Zhuzhou Institute of Technology Zhuzhou Hu'nan 412008 China 2.Institute of Fundamental Mechanics and Material Engineering Xiangtan University Hu'nan Xiangtan 411005

Unit：

KeyWords： necking stress thickness changing hardening effect

ClassificationCode：TG385.2

year,vol(issue):pagenumber：2005,30(3):63-65

Abstract：

The unstable contraction is the main failure factor when the thin-wall cylindrical parts are shaped. To improve the calculation precision of contracting force, many factors including the thickness change, the hardening effect and the friction should be all considered during the calculating process. In this paper, the contracting force of the thin-wall cylindrical parts is calculated respectively by using СТОРОЖЕВ method and УНКСОВ method considering the thickness change and the hardening effect. Meanwhile, it is calculated also without considering the thickness change and the hardening effect. Comparing with afore-mentioned three calculation results, it is found that the thickness change and the hardening effect have a profound influence on the calculation results of the contracting force.

Funds：

国家自然科学基金项目(20202012);; 湖南省自然科学基金项目(04JJ6035)资助

Reference：

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