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Prediction model of residual stress field in aluminum alloy plate

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Abstract

Residual stress distributions in 7075 aluminum alloy thick plates with different thicknesses and different quenching speeds were measured. A shape function of stress distribution was proposed based on the internal stress distribution characteristics of aluminum alloy. Using nonlinear regression technology, the function between stress value of key points on internal stress curve and surface stress of the plate was obtained. Based on the measured surface stress, stress value of key points and stress distribution shape, the internal stress distribution can be reconstructed. The experiments show that the model is of good engineering practicality.

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Authors and Affiliations

  1. School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China

    Hai Gong  (龚海), Yun-xin Wu  (吴运新) & Kai Liao  (廖凯)

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  1. Hai Gong  (龚海)
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  2. Yun-xin Wu  (吴运新)
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  3. Kai Liao  (廖凯)
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Corresponding author

Correspondence to Yun-xin Wu  (吴运新).

Additional information

Foundation item: Projects(2005CB623708, 2010CB731703) supported by the National Basic Research Program of China

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Gong, H., Wu, Yx. & Liao, K. Prediction model of residual stress field in aluminum alloy plate. J. Cent. South Univ. Technol. 18, 285–289 (2011). https://doi.org/10.1007/s11771-011-0692-8

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  • DOI: https://doi.org/10.1007/s11771-011-0692-8

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