Abstract
A new method developed by the author for the numerical simulation of the cross wedge rolling (CWR) process including upsetting is described in the present study. During the calculation sequence the strain area has been divided into several layers to be analysed successively for a plane state of strain as typical for rotary compression processes. The results of calculations based upon the upper-bound method have enabled distribution diagrams to be obtained for: the rolling forces; the contact surface between the material and the tool; and the rolling radius within the total range of the forming process. Furthermore, phenomena have been predicted (slipping and buckling) impairing process stability as well as the dimensions of the product obtained as a result of the CWR process.
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