锻压技术

基于正交试验的涡轮壳成形工艺参数的优化

英文标题：Optimization on process parameters for turbine shell forming based on orthogonal test

作者：张良

单位：江阴职业技术学院

分类号：TG386

出版年,卷(期):页码：2018,43(8):54-57

摘要：

以涡轮壳作为研究对象，利用Simufact Forming软件对涡轮壳的成形回弹进行有限元仿真。以模具弯曲半径、模具间隙以及冲压速度作为影响因素，将板料的回弹量作为优化目标，借助正交试验法设计了4因素3水平仿真试验。通过仿真实验得到了各因素对板料成形回弹量影响的顺序分别为：模具间隙、模具弯曲半径、冲压速度；涡轮壳冲压成形的最优工艺参数组合方案为：模具间隙为1.0t、模具弯曲半径为55.2 mm、冲压速度为15 mm·s-1；最优方案下的回弹量仿真值为0.436 mm。随后，利用冲压模具对优化方案进行试验验证，结果显示，回弹量的试验值为0.494 mm，仿真值与试验值之间的误差为13.3%，验证了有限元仿真的正确性。

For the turbine shell, the springback of turbine shell was simulated by software Simufact Forming. Taking the bending radius of die, die clearance and stamping speed as influencing factors, and taking the amount of springback for sheet metal as the optimization target，the simulation test with four factors and three levels was designed by orthogonal test. Then, the influences of each factor on springback of sheet metal were obtained by simulation test. And the influence sequence is die clearance, bending radius of die and stamping speed. Furthermore, the optimal combination of process parameters for turbine shell forming are the die clearance of 1.0t, bending radius of die of 55.2 mm and stamping speed of 15 mm·s-1, and the simulation value of springback with optimal scheme is 0.436 mm. In addition, the experiment of the optimal scheme was carried out by stamping die. The result shows that the experimental value of springback is 0.494 mm, and the error between simulation and experiment values is 13.3%, which verifies the correctness of the finite element simulation.

基金项目：

江阴职业技术学院科研项目（17E-JD-29）

张良（1973-），男，硕士，副教授 E-mail：zlthzl@hotmail.com

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