基于正交试验的储罐封头成形数值模拟及工艺参数优化

Numerical simulation and process parameter optimization on tank head forming based on orthogonal test

为了探究储罐封头冲压成形的最优工艺参数组合,提高效率、节约时间,使用Dynaform有限元软件进行数值模拟。选取冲压速度、压边力和摩擦因数3个因素作为优化变量,以封头最大减薄率、最大增厚率和最大回弹量为成形指标,设计正交试验方案,通过极差分析和方差分析,确定最优工艺参数组合,即冲压速度为4000 mm·s^(-1)、压边力为590 kN和摩擦因数为0.08。最后,根据最优工艺参数组合进行实际生产试验,将封头端口椭圆度作为验证标准。结果表明,模拟结果与实际生产结果一致,并且封头的最终成形质量符合要求。

In order to explore the optimal combination of process parameters for the tank head stamping,improve efficiency and save time,the Dynaform finite element software was used for numerical simulation.Then,the three factors of punching speed,blank holder force and friction coefficient were selected as optimization variables,and the maximum thinning rate,the maximum thickening rate and the maximum springback amount of head were used as forming indicators.Furthermore,the orthogonal test scheme was designed,and the optimal combination of process parameters with the punching speed of 4000 mm·s^(-1),the blank holder force of 590 kN and the friction coefficient of 0.08 was determined by range analysis and variance analysis.Finally,the actual production test was carried out according to the optimal combination of process parameters,and the ovality of head port was used as the verification standard.The results show that the simulation results are consistent with the actual production results,and the final forming quality of head meets the requirements.