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一、概述到目前为止,对摆辗时接触区表面上的压力分布仅限于实验研究,世界各国的学者已做了不少的工作,但还没有人能给出其理论解。纵观过去的实验研究工作,可以对接触区压力分布有如下认识: 1.工件中心处的压力最低,甚至低于工件材料的流动应力,工件边缘处压力为材料的流动应力; 2.最大压力作用点在工件中心与边缘之间某点上,其到工件中心的距离为r,文献中,r=(1/4)r_(?),文献中,r=(0.6
I. Overview So far, the pressure distribution on the surface of contact area at the time of tumbling is limited to experimental research. Many scholars all over the world have done a lot of work, but no one can give any theoretical solution. Throughout the past experimental research, we can know the pressure distribution in the contact zone as follows: 1. The pressure in the center of the workpiece is the lowest, even lower than the flow stress in the workpiece, and the pressure in the edge of the workpiece is the flow stress in the material. 2. The maximum pressure The point of action is at a point between the center of the workpiece and the edge and its distance from the center of the workpiece is r, r = (1/4) r_ (?) In the literature, r = (0.6