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对方矩形管辊弯成形过程中机架间距、摩擦系数和轧制速度三个工艺参数的不同水平值进行了正交试验设计,用Abaqus有限元软件的显式非线性动态分析对所设计试验过程进行了模拟分析,求出各个道次各个参数的信噪比,获得了边部纵向应变峰值最小时各个道次三个工艺参数的最优值。并用优化后的参数模拟和验证之后,结果是各道次边部纵向应变峰值比优化前各组试验都小。优化后第4到第10道次纵向应变峰值的方差最小,也就是产品边部拉伸最小,并且边部拉伸分布均匀。
Orthogonal experimental design was carried out for the different levels of the three process parameters of the rack, the friction coefficient and the rolling speed during the forming process of the rectangular tube, and the explicit nonlinear dynamic analysis of the Abaqus finite element software was used to analyze the experimental process The simulation results show that the signal to noise ratio of each pass is obtained, and the optimum values of the three process parameters of each pass are obtained when the peak longitudinal strain is the smallest. After simulation and verification with the optimized parameters, the result is that the peak longitudinal strain at the edge of each pass is smaller than that of each group before optimization. After optimization, the variance of the longitudinal strain peak from the 4th to the 10th pass is the smallest, that is, the product has the least stretch at the edge and the even distribution at the edge.