华南理工大学学报(自然科学版) ›› 2006, Vol. 34 ›› Issue (2): 33-36.

• 机械工程 • 上一篇    下一篇

铝合金预拉伸厚板内残余应力分布的测量

郭魂1 左敦稳1 王树宏2 王珉1   

  1. 1.南京航空航天大学 机电学院,江苏 南京 210016;2.中国人民解放军驻五——军代表室,江苏 南京 210016
  • 收稿日期:2005-03-23 出版日期:2006-02-25 发布日期:2006-02-25
  • 通信作者: 郭魂(1975-),男,在职博士生,现任职于常州工学院机电工程学院,主要从事计算机智能加工和计算机应用技术的研究 E-mail:guohun@126.com.
  • 作者简介:郭魂(1975-),男,在职博士生,现任职于常州工学院机电工程学院,主要从事计算机智能加工和计算机应用技术的研究
  • 基金资助:

    国家自然科学基金资助项目(50375072);总装“十五”预研项目(41318.1.2.1).

Measurement of Residual Stress Distribution in Thick Pre-Stretched Alum inum Alloy Plate

Guo Hun1  Zuo Dun-wen1  Wang Shu-hong2  Wang Min1   

  1. 1.College of Mechanical and Electrical Engineering,N ing Univ.of Aeronautics and Astronautics,N ing 2113016,Jiangsu,China;2.Ofice of the Military Representatives from PLA to No.511 Factory,Naming 210016,Jiangsu,China
  • Received:2005-03-23 Online:2006-02-25 Published:2006-02-25
  • Contact: 郭魂(1975-),男,在职博士生,现任职于常州工学院机电工程学院,主要从事计算机智能加工和计算机应用技术的研究 E-mail:guohun@126.com.
  • About author:郭魂(1975-),男,在职博士生,现任职于常州工学院机电工程学院,主要从事计算机智能加工和计算机应用技术的研究
  • Supported by:

    国家自然科学基金资助项目(50375072);总装“十五”预研项目(41318.1.2.1).

摘要: 因残余应力而引起的加工变形是飞机整体结构件制造的难题之一.文中针对铝合金预拉伸厚板的特点,提出用改进剥层应变法来测量内部残余应力,并运用弹性力学理论进行推导,得到了应力一应变关系矩阵.随后对典型航空用铝合金预拉伸厚板7075T735l的内部残余应力进行了测量,并对测量结果进行了分析和比较.结果表明,文中提出的方法能有效地解决厚板内部残余应力测量的难题.

关键词: 铝合金预拉伸板, 残余应力, 改进剥层应变法

Abstract:

In order to overcome the distortion of the airplane monolithic structure parts caused by residual stresses,the modified layer··removal strain method was used to measure the residual stress in thick pre··stretched aluminum alloy plates by considering and analyzing the characteristics of the aluminum alloy plate.The stress-strain relation matrix was then deduced according to the elasticity theory. Moreover,the residual stress in a typical navigationused 7075T7351 aluminum alloy plate was measured by the proposed method,with the results being finally analyzed and compared with the data obtained by other methods.The results indicate that the proposed method is effective in measuring the residual stress in thick pre-stretched aluminum alloy plates.

Key words: pre-stretched aluminum alloy plate, residual stress, modified layer-removal strain method