汽车前地板成形有限元数值模拟

doi:10.13229/j.cnki.jdxbgxb20180764

摘要/Abstract

摘要：

以某汽车前地板为例，运用有限元软件Autoform进行了成形过程数值模拟分析。通过模拟分析预测了板料成形过程中拉深不足、起皱、失效等缺陷；通过调整压边力大小、拉延筋参数、凸凹模间隙和摩擦因数，对模拟的结果进行优化，获得了一组最适合实际生产的工艺参数。在设置变强度双重拉延筋的基础上，最佳的工艺参数条件为：压边力为650 kN，成形力为5200 kN，凸凹模模具间隙为0.8 mm，摩擦因数为0.15。基于模拟结果进行成形实验，得到了合格的成形件，有效地缩短了模具的开发周期，降低了设计成本。

关键词: 材料合成与加工工艺, 汽车覆盖件, 数值模拟, 有限元方法, 拉延筋

Abstract:

Taking the front floor of a car as an example, the finite element software Autoform was used for numerical simulation analysis of forming process. The defects such as splitting, wrinkling, and failure during the forming process of the sheet metal were predicted through simulation analysis. By adjusting the size of the blank holder force, the drawbead parameters, the offset between the punch and the die, and the friction coefficient, the simulation results were optimized to obtain a set of the most suitable parameters for actual production process. After setting the variable strength double drawbeads, the optimum conditions for the process parameters are: blank holder force is 650 kN, forming force is 5200 kN, the offset between punch and die is 0.8 mm and the friction coefficient is 0.15. Based on the simulation results, a forming experiment was carried out and a qualified forming part was obtained, which effectively shortened the development cycle of the die and reduced the design cost.

Key words: materials synthesis and processing technology, automobile panel, numerical simulation, finite element method, drawbead

中图分类号:

TG386

李欣,孙延朋,王丹,陈军绪,谷诤巍,徐虹. 汽车前地板成形有限元数值模拟[J]. 吉林大学学报(工学版), 2019, 49(5): 1608-1614.

Xin LI,Yan-peng SUN,Dan WANG,Jun-xu CHEN,Zheng-wei GU,Hong XU. Finite element numerical simulation for automobile front floor forming[J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(5): 1608-1614.

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