Transactions of Materials and Heat Treatment

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year,vol(issue):pagenumber：1985,10(3):2-8

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[1] Westwood, D. and Wallace, J. F.. Upper bound Values for the loads on a rigid plastic body in plane strain, J. Mech. Eng. Sci., 2, 178, 1960
[2] Green J. W. and Wallace, J.F.,Estimation of load and torque in the rolling processes, J. Mech. Eng, Sci., 4,136,1962
[3] Green J. W.,Sparling, L.G. M. and Wallace J. F., Shear plane theories of hot and cold fla(?)rolling, J. Mech. Eng. Sci. ,6,219, 1964
[4] Halling, J. and Mitchell, L. A. , The Solu tion of axi-symmetric plastic deformation problems from equilibrium force diagrams consideration and the application of the method to the extrusion process, Int. J. Prod. Res. , 4, 141, 1965
[5] Johnson, W. and Mamalis, A. G. , Plasticity and metal forming , Hellenie steel co. , 1978
[6] Johnson, W. and Mamalis, A. G. , Engineering plasticity:A theory of metal forming proce- sses, Springer Verlag (CISM), 1977
[7] Johnson, W.and Mamalis, A. G., Force Polygons to determine upperbounds and force di stribution in plane metal forming processes, 18th Int.MTDR Conference, London, 11, 1977
[8] Johnson, W.and Mamalis.A. G., Some force Plane diagrams for plane strain slip-line fields, Int. J. Mech. Sci., 20, 47, 1978
[9] 李铁生,内蒙古工学院学报,1982, 1期, 50．
[10] Johnson, W. and Kudo, H., The Mechani cs of Metal Extrusion, 1962

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