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| ON DIVISION OF STRESS ON THE YIELD LOCUS AND CORRESPONDANCE BETWEEN THE REGIONS ON THE YIELD LOCUS AND SIZE VARIATION OF WORKPIECE DURING METAL FORMING |
| Wang Zhongren Li Shoudon Liu Lijun (Harbin Institute of Technology) (Manuscript received 22 August; 1980) |
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Cite this article:
Wang Zhongren Li Shoudon Liu Lijun (Harbin Institute of Technology) (Manuscript received 22 August; 1980). ON DIVISION OF STRESS ON THE YIELD LOCUS AND CORRESPONDANCE BETWEEN THE REGIONS ON THE YIELD LOCUS AND SIZE VARIATION OF WORKPIECE DURING METAL FORMING. Acta Metall Sin, 1982, 18(4): 433-438.
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Abstract The division of stress on the yield locus in metal forming processes of plane stress is presented. The tendency of variation of three orthogonal size of workpiece is illustrated in Fig. l. It is assumed that. unrolling the Mises circular cylinder to a plane is a convenient method, and σ_m-θ stress plane is given first(σ_m-mean stress,θ—characterized strain angle). And the equations of interface between various regions are also given. Finally, the location of typical metal forming processes in stress plane has been illustrated in Fig.5 from which the tendency of variation of three orthogonal size may be judged and the resistance and plasticity of metal forming processes may also be compared.
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Received: 18 April 1982
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1 刘淑仪,锻压技术,(1979) ,№.5,4．
2 Johnson, W.; Mellor, P.B., Engineering Plasticity, Van Nostrand Reinhold, London, 1973, p. 68．
3 王仲仁,哈尔滨工业大学科学研究报告,1979,№.49．
4 王仲仁,锻压技术,(1979) ,№5,19．
5 王仲仁;李守栋,哈尔滨工业大学科学研究报告,1979,№.55．
6 斯德洛日夫,M.B.;波波夫,E.A.,金属压力加工原理,哈尔滨工业大学锻压教研室;吉林大学锻压教研室译,机械工业出版社,1980． p.121． |
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