Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (2): 33-36.

• Mechanical Engineering • Previous Articles     Next Articles

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)．

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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