板条拉楔试验的研究

Research on Drawing Wedge Test for Sheet Strips

采用理论解析和数值计算法对拉楔试验中板条扇形变形区的应力、应变分布规律、轴向拉力的变化及极限拉楔比进行了研究，并研制了拉楔试验夹具，作了拉楔试验．解析解、数值解与试验数据基本吻合，认为简单的板条拉楔试验用于筒形件拉深模拟试验研究是有效的．

From the theoretical analysis and numierical calculation on the drawing wedge processes of sheet strips,the law of the stress and strain distribution on the fan shaped deformation region,the change of the axial tension force,and the coefficient of the limit drawing are studied in this paper.Menwhile,the setup for the drawing wedge test is developed,and the drawing wedge processes of sheet strips are investigated experimentally.The analytical and numerical results are in basical agreement with experiment.Based on the above analyses,it is shown that the simple drawing wedge test of sheet strips can be used for replacing the cylindrical cup drawing test.