锻压技术

基于正交试验的铝合金板料自冲铆接成形参数优化

英文标题：Optimization on forming parameters of self-piercing riveting for aluminum alloy sheet based on orthogonal test

作者：徐小娟穆瑞

分类号：TG386

出版年,卷(期):页码：2019,44(9):51-55

摘要：

以两层1.5 mm料厚的5052-H32铝合金板料的自冲铆接为分析对象，选取铆接速度、模具深度、模具宽度以及模具凸台高度作为影响因素，以底切量作为评价指标，建立4因素3水平的正交试验，利用DEFORM-2D软件对不同工艺参数组合的自冲铆接过程进行数值模拟。通过方差分析得知，模具深度对底切量的影响比较显著，各工艺参数对底切量影响的主次顺序为模具深度＞模具宽度＞铆接速度＞模具凸台高度。依据正交试验结果的分析得出自冲铆接的最优工艺方案为：铆接速度为10 mm·s-1、模具深度为1.3 mm、模具宽度为8.5 mm以及模具凸台高度为-0.1 mm，底切量的模拟值为0.486 mm。此外，借助铆接设备对优化方案进行试验验证。底切量的试验值为0.451 mm，模拟值与试验值之间的相对误差为7.2%，从而验证了数值模拟的准确性。

For the self-piercing riveting of 5052-H32 aluminum alloy sheet with 1.5 mm thickness of two layers, the riveting speed, die depth, die width and boss height of die were selected as the influencing factors, and the under-cut was taken as the evaluation index. Then, the orthogonal test of four factors and three levels was established, and the self-piercing riveting processes with different combinations of process parameters were simulated by DEFORM-2D. Furthermore, the die depth has the significant influence on the under-cut by the variance analysis, and the influence order of process parameters on the under-cut is die depth, die width, riveting speed and boss height of die. According to the analysis results of orthogonal test, the optimum technological scheme of self-piercing riveting is obtained with riveting speed of 10 mm·s-1, die depth of 1.3 mm, die width of 8.5 mm and boss height of die of -0.1 mm, and the simulation value of under-cut is 0.486 mm. In addition, the optimization scheme was tested by riveting equipment. The experimental value of under-cut is 0.451 mm and the relative error between simulation value and experimental value is 7.2% to verify the accuracy of numerical simulation.

基金项目：

江苏省现代教育技术研究课题（2016-R-49116）

徐小娟（1973-），女，硕士，讲师 E-mail：1241457188@qq.com

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