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Residual Stress Inversion and Deformation Calculation Based on Theory of Elasticity
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Baijun Gu, Xiangze Tao, Yingtao Zhao**
Chinese Journal of Solid Mechanics | 2024, 45(2) : 188 - 200
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Chinese Journal of Solid Mechanics | 2024, 45(2): 188-200
Research Paper
Residual Stress Inversion and Deformation Calculation Based on Theory of Elasticity
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Baijun Gu, Xiangze Tao, Yingtao Zhao**
Affiliations
  • Department of Mechanics, School of Astronautics, Beijing Institute of Technology, Beijing, 100081
Published: 2024-04-25 doi: 10.19636/j.cnki.cjsm42-1250/o3.2023.036
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During the manufacturing process of a rough workpiece, the non-uniformity of material mechanical properties can result in the generation of residual stresses within the workpiece, which can lead to structural failure. During the cutting removal process of the workpiece, the residual stresses gradually release, causing deformation. In this study, the "birth-death element" technique of finite element analysis was used to simulate the cutting removal process of the material. This process was then transformed into the release of residual stresses. A novel analytical method combining radial basis function interpolation with geometric and physical equations was proposed based on plate shell theory, small-deformation theory, theory of elasticity, and the superposition principle. The method aimed to invert the residual stress field and calculate the resulting deformation. This study was divided into two parts. In the first part, the influence of stress equilibrium equations was neglected, and the radial basis function interpolation method was used to invert the release of residual stresses in thin plates according to the initial residual stress field and the residual stress field after material removal. Next, the stresses were substituted into the physical equations to calculate the strain. The strain was then substituted into the geometric equations, and the plane displacement was calculated by strain integration from geometric equations. Based on the plate shell theory equations, the buckling deformation was inverted according to the plane displacement. In the second part, the reverse process of the first part was performed. Firstly, the buckling deformation caused by material removal in the thin plate was inverted. Then, the buckling deformation was substituted into the plate shell theory equations to invert the release of residual stress and the reconstructed residual stress field. The results demonstrated the reversibility of these two processes. Furthermore, the analytical solutions showed high agreement with the finite element solutions. This suggested that the analytical method proposed in this paper is applicable to thin-plate structures under elastic conditions and can be used to estimate residual stress distribution and predict deformation in the thin-plate cutting removal process.

residual stress  /  residual stress inversion  /  residual stress release  /  material removal  /  finite element simulation
Baijun Gu, Xiangze Tao, Yingtao Zhao. Residual Stress Inversion and Deformation Calculation Based on Theory of Elasticity[J]. Chinese Journal of Solid Mechanics, 2024 , 45 (2) : 188 -200 . DOI: 10.19636/j.cnki.cjsm42-1250/o3.2023.036
Year 2024 volume 45 Issue 2
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Article Info
doi: 10.19636/j.cnki.cjsm42-1250/o3.2023.036
  • Receive Date:2023-07-26
  • Online Date:2026-04-01
  • Published:2024-04-25
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  • Received:2023-07-26
Affiliations
    Department of Mechanics, School of Astronautics, Beijing Institute of Technology, Beijing, 100081
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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