白车身薄板冲压件自重变形非线性仿真分析

Nonlinear Simulation Analysis of Gravity Deformation of Sheet Stampings for Body-in-White

为分析自重变形对薄板冲压件尺寸检测合格率的影响,利用HyperMesh与Abaqus构建天窗顶盖外板和中通道焊接总成自重变形非线性联合仿真模型。结果表明,不同的摆放姿态克服自重变形的能力不同,凸放可以提高零件克服自重变形的能力,验证了自重变形非线性分析方法指导白车身薄板冲压件测量方案设计的可行性。

In order to analyze the influence of gravity deformation on the size pass rate of sheet stampings,Hypermesh and Abaqus were used to construct the nonlinear co-simulation model of gravity deformation of the sunroof cover plate and the tunnel welding assembly.The results show that different placement positions have different abilities to overcome gravity deformation,and the convex placement can improve the ability of parts to overcome gravity deformation.The simulation results verify the feasibility of nonlinear analysis method of gravity deformation to guide the measurement scheme design of sheet stampings of BIW.