华南理工大学学报(自然科学版) ›› 2006, Vol. 34 ›› Issue (7): 35-39.

• 机械工程 • 上一篇    下一篇

轿车发动机罩外板成形毛坯尺寸的数值模拟

丘宏扬1 黄亚娟2   

  1. 1.华南理工大学 机械工程学院,广东 广州 510640;2.广州汽车技术中心,广东 广州 510640
  • 收稿日期:2005-09-15 出版日期:2006-07-25 发布日期:2006-07-25
  • 通信作者: 丘宏扬(1946-),男,副教授,主要从事塑性加工与模具计算机技术的研究. E-mail:scutqhy@public.guangzhou.gd.cn
  • 作者简介:丘宏扬(1946-),男,副教授,主要从事塑性加工与模具计算机技术的研究.
  • 基金资助:

    广州市科技攻关项目(2004ZZ3-D0101)

Numerical Simulation of Blank Size in Forming Automobile Engine Hood Panel

Qiu Hong-yang1  Huang Ya-juan2   

  1. 1.College of Mechanical Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China; 2.Guangzhou Automobile Technical Center,Guangzhou 510640,Guangdong,China
  • Received:2005-09-15 Online:2006-07-25 Published:2006-07-25
  • Contact: 丘宏扬(1946-),男,副教授,主要从事塑性加工与模具计算机技术的研究. E-mail:scutqhy@public.guangzhou.gd.cn
  • About author:丘宏扬(1946-),男,副教授,主要从事塑性加工与模具计算机技术的研究.
  • Supported by:

    广州市科技攻关项目(2004ZZ3-D0101)

摘要: 基于数值模拟技术,采用动态显式有限元分析软件eta/DYNAFORM,对汽车发动机罩外板的成形过程进行研究,通过建立2组共8种冲压仿真模型,针对方板及剪角板板材模型,分析了板材形状、工艺补充尺寸对发动机罩外板成形的影响,确定了合理的板材尺寸,并得出以下结论:板材形状和尺寸对发动机罩外板的成形有显著影响;当板材形状不合适时,在一定范围内调整尺寸可改善成形结果,但不能解决根本问题;剪角板更适合轿车发动机罩外板的成形,若采用方板则需要较大的板材;采用75°剪角板可获得较好的成形结果.

关键词: 轿车发动机罩外板, 冲压, 成形, 毛坯尺寸, 数值模拟

Abstract:

The formation process of automobile engine hood panels is investigated by means of the numerical simu-lation using a dynamic explicit FEA(Finite Element Analysis)software eta/DYNAFORM. Night simulated stam-ping models in two groups are then established to analyze the influences of the initial blank shape and the technologi-cal supplementing dimension on the formation of the engine hood panel, each using the rectangular blank model and the cutting-angle blank model. Proper blank dimension is thus obtained. The results show that the formation is greatly affected by the shape and dimension of the blank,that adjusting the dimension in a certain range can im-prove the stamping formation if the blank shape is unmeet,but can not solve the problem thoroughly,and that the cutting-angle blank,especially the one with an angle of 75°,is more suitable for the formation than the square blank because the latter may cause large size consumption.

Key words: automobile engine hood panel, stamping, forming, blank size, numerical simulation