论文部分内容阅读
根据盒形件拉深变形的特点 ,借助轴对称拉深件的变形规律与盒形件圆角区剪应力零线相同的假设 ,得到了方盒形件主要变形区法兰和侧壁的应力解析表达式 ,从而对方盒形件的拉深破裂进行了预测。理论解析的可靠性用有限元数值模拟方法得到验证
According to the characteristics of deep drawing and deformation of box, the stress of flange and side wall in the main deformation area of box-shaped box was obtained by the assumption of the deformation of axisymmetric drawing part and the zero line of shear stress in box corner. Analytical expression, so that the other side of the box-shaped pieces of the fracture was predicted. The reliability of theoretical analysis is verified by finite element numerical simulation