锻压技术

汽车翼子板拉深成形模拟及工艺参数优化

英文标题：Simulation and parameters optimization of deep drawing for automobile fender

作者：马国英黄彬兵苏春建殷菲菲李朋朋

单位：山东科技大学清华大学

分类号：TG386.1

出版年,卷(期):页码：2015,40(3):21-24

摘要：

以汽车翼子板为研究对象，采用有限元分析软件Dynaform对其拉深成形过程进行了模拟。针对拉深成形过程中出现的破裂和起皱等缺陷，选取压边力、冲压速度、板料厚度、摩擦系数4个重要成形工艺参数进行正交试验及参数优化，模拟结果表明，最优拉深成形工艺方案为：压边力1600 kN、冲压速度3000 mm·s-1、板料厚度1.0 mm和摩擦系数0.10，得到零件的最大变薄率为27.7%，最大变厚率为8.5%。采用优化工艺方案进行汽车翼子板拉深试模，成形件质量较好，经检测零件最小壁厚0.728 mm，最大壁厚1.08 mm，试模结果与有限元模拟结果基本一致。

The deep drawing process of the automobile fender was simulated by finite element analysis software of Dynaform. For the defects such as wrinkles and cracks produced in deep drawing process, the orthogonal experiment and parameter optimization were carried out, while blank holder force, punching speed, sheet thickness and friction coefficient were chosen as process parameters. The simulation results show that the optimal deep drawing process parameters are blank holder force of 1600 kN, punching speed of 3000 mm·s-1, sheet thickness of 1.0 mm and friction coefficient of 0.10 with the max thinning rate of 27.7% and the max thickening rate of 8.5%. The automobile fender drawing test was conducted by optimized process, and the forming quality is better with the wall thickness within 0.728-1.08 mm. The test results are basilally consistent with that of finite element simulation.

基金项目：

国家自然科学基金资助项目(51305241);山东省高等学校科研计划项目(J12LA03)

马国英（1987-），女，硕士研究生

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