锻压技术

基于充液成形技术的铝合金发盖内板成形

英文标题：Forming of aluminum alloy inner panel of engine hood based on hydroforming technology

作者：周晶晶何成王耀佘威

分类号：TG394

出版年,卷(期):页码：2017,42(2):52-55

摘要：

基于有限元分析软件ETA/Dynaform，对铝合金发盖内板的充液拉深过程进行数值模拟。建立了有限元模型，得到了最优液室压力加载路径，并研究了零件充液成形过程的成形性能。研究结果表明，液室压力加载路径对充液成形零件质量的影响较大，成形所需的最大液室压力为10 MPa，且液室压力不宜加载过早。通过充液成形技术的应用，消除了成形过程中的破裂、起皱等成形缺陷，达到了提高成形性能的目的。模拟实验和物理实验验证相吻合,均得到合格的铝板拉深件。

Based on the finite element analysis software ETA/Dynaform, the hydro-mechanical deep drawing process of engine hood inner panel was numerically simulated, and the finite element model was established. Then, the optimal cavity pressure loading path was obtained, and formability of the part was studied accordingly. The research results show that the cavity pressure and loading path have great effect on the quality of the part, and the needed maximum cavity pressure is 10 MPa without loading too early. Meanwhile, the defects of crack and wrinkle of the part in the forming process are eliminated to improve the formability. Finally, the simulation results are in good agreement with the experimental results, and the qualified parts are obtained from both simulation and experiment results.

基金项目：

国家科技重大专项（2014ZX04002041）

周晶晶（1988-），女，学士，助理工程师何成（1988-），男，学士，工程师

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