锻压技术

管状扭力梁液压成形有限元仿真分析及试验

英文标题：Finite element simulation and experiment on hydroforming tubular twist beam

作者：阴雪莲逯若东

分类号：TG394

出版年,卷(期):页码：2017,42(9):82-86

摘要：

相比板状扭力梁，采用液压成形工艺加工管状扭力梁能够减轻零件重量，提升零件强度、刚度和疲劳性能。分析了管状扭力梁零件的典型截面形状，指出了零件加工难点和成形过程中的主要缺陷。利用有限元仿真分析方法对管状扭力梁成形过程进行数值模拟，分析了成形过程中典型截面的壁厚变化规律，即过渡区域壁厚变化较大，中间区域壁厚变化不明显。在此基础上进行工艺试验。研究结果表明，管状扭力梁液压成形有限元仿真结果与试验结果吻合性好，零件的实际形状与理论设计形状基本一致。

Compared with blank twist beam, the tubular twist beam can reduce weight, and increase the strength, stiffness and fatigue by hydroforming. Therefore, the typical cross section was analyzed, and manufacture difficulties and main defects in the hydroforming were pointed out. Then, the hydroforming process was numerically simulated by FEA, and the thickness distribution of typical section was analyzed. The thickness variation was larger on transition area, but not obvious in the middle zone. Furthermore, the tryout was carried out. The result shows that the finite element simulation results of tubular twist beam forming are in line with the experimental results, and the actual shape of the part is basically the same as that of theoretical design.

基金项目：

阴雪莲（1979-），女，硕士，工程师 E-mail：yinxuelian@shac.com.cn

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