基于响应面法的板料成形工作模面几何参数优化

阐述了以响应面法建立板料成形参数与有限元模拟结果的代理模型的基本原理;介绍了板料成形中的设计变量、目标函数、约束条件,多目标优化的处理方法;基于响应面法.以汽车后桥悬架内板零件为研究对象,成形后最小板料厚度为优化目标,成形极限图为约束条件,建立了模面几何参数优化模型;对模面几何参数进行优化并获得最优参数组合;以最优几何参数组合进行了实际的冲压试验,验证了优化结果.

-face-geometric Parameters Optimization Based on Response Surface Method

More traditional die-face designs are carried out according to experience without considering the mapping function between design parameters and finite element simulation results. So it is difficulty to optimize the design parameters. In the present research, the basic principle of the sheet metal forming optimization by the response surface method was discussed, along with the replacement model of finite element simulation results. Specially, the design variables, the objective function, constraints and the multi-objective optimization approach in sheet metal forming optimization were introduced. Based on the response surface method, the inner panel of automotive suspension was studied, and the optimal model of the die-face-geometric parameters was established with the least blank thickness as the object, the die-face-geometric parameters as the variables and the constraints as the FLD. Finally the die-face-geometric parameters were optimized. With the optimal parameters, the pressing test was carried out to verify the optimization result.