华南理工大学学报(自然科学版) ›› 2010, Vol. 38 ›› Issue (6): 100-106.doi: 10.3969/j.issn.1000-565X.2010.06.019

• 机械工程 • 上一篇    下一篇

三边形圆弧截面空心零件旋压成形的数值模拟及试验研究

夏琴香1  吴小瑜1  张帅斌1  程秀全2   

  1. 1.华南理工大学 机械与汽车工程学院, 广东 广州 510640;2.广州民航职业技术学院 机务工程系, 广东 广州 510403
  • 收稿日期:2009-08-11 修回日期:2009-09-21 出版日期:2010-06-25 发布日期:2010-06-25
  • 通信作者: 夏琴香(1964-),女,教授,博士,博士生导师,主要从事塑性加工与模具计算机技术研究. E-mail:meqxxia@sent.edu.cn
  • 作者简介:夏琴香(1964-),女,教授,博士,博士生导师,主要从事塑性加工与模具计算机技术研究.
  • 基金资助:

    国家自然科学基金资助项目(50775076)

Numerical Simulation and Experimental Investigation of Spinning of Hollow Part with Triangular Arc Section

Xia Qin-xiang Wu Xiao-yu1  Zhang Shuai-bin1  Cheng Xiu-quan2   

  1. 1.School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;2.Deparment of Airplane Maintenance Engineering,Guangzhou Civil Aviation College,Guangzhou 510403,Guangdong,China
  • Received:2009-08-11 Revised:2009-09-21 Online:2010-06-25 Published:2010-06-25
  • Contact: 夏琴香(1964-),女,教授,博士,博士生导师,主要从事塑性加工与模具计算机技术研究. E-mail:meqxxia@sent.edu.cn
  • About author:夏琴香(1964-),女,教授,博士,博士生导师,主要从事塑性加工与模具计算机技术研究.
  • Supported by:

    国家自然科学基金资助项目(50775076)

摘要: 采用有限元分析软件MSC.MARC对三边形圆弧截面空心零件的旋压成形进行数值模拟,对其应力应变分布规律进行了研究,重点探讨了旋轮轴向进给比和毛坯厚径比对旋压成形质量的影响,分析了起皱、减薄、回弹现象产生的原因以及容易出现这些缺陷的部位.模拟及试验结果表明,口部(即成形过程中的坯料凸缘)、侧壁靠近圆角处大圆弧区和圆角区域小圆弧部位本别是三边形圆弧截面空心零件拉深旋压过程中易产生起皱、减薄和破裂的部位.

关键词: 三边形圆弧截面, 空心零件, 旋压, 应力, 应变, 成形质量, 数值模拟

Abstract:

The spinning process of a hollow part with triangular arc section is numerically simulated with the finite element software MSC.MARC,and the corresponding stress-strain distribution is investigated.Then,the forming quality affected by the axial feed rate of the roller and by the thickness-to-diameter ratio of the blank is investigated.Moreover,the causes of such forming defects as wrinkling,thinning and rebounding are analyzed,with the defect positions being also determined.Simulated and experimental results show that the wrinkling,thinning and fracture of the hollow part with triangular arc section mainly occur in the mouth region(i.e.,the blank flange that occurs during the forming process),the lower region of wall near the fillet and the small arc in the fillet region.

Key words: triangular arc section, hollow part, spinning, stress, strain, forming quality, numerical simulation