Finite Element Simulation Analysis on Residual Stress Relief of 7075 Aluminum Alloy Ring

Abstract:

Vibration stress relief (VSR) and thermal stress relief (TSR) are important method to eliminate the residual stress of structural parts. The thermal vibratory stress relief (TVSR) is a new method to decrease and homogenize the residual stress. Based on the stress relaxation tests and the equivalent vibration equation of modal analysis, the creep constitutive model and the bilinear isotropic hardening plasticity material model (BISO) are combined to establish the numerical simulation model of TVSR of 7075 aluminum alloy ring part. The simulation results show that four different initial blank residual stress levels are obtained after quenching process, and the residual stress elimination and homogenization effect of TSR and TVSR is better than that of VSR. TVSR has a better effect on both residual stress elimination and homogenization, and the residual stress relief rate can reach more than 20%.

• Periodical: Materials Science Forum (Volume 1032)
• Pages: 135-140
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1032.135
• Online since: May 2021
• Authors: Shao Feng Wu, Xiang Sheng Gao*, Xian Rang Zhang, Han Jun Gao
• Keywords: FEM, Natural Frequency, Residual Stress, Stress Relaxation, Thermal-Vibratory Stress Relief (TVSR)

References

[1] Srivatsa, Shesh K., and G. E. Aviation. Modeling of Residual Stress and Machining Distortion in Aerospace Components. (2010).

[2] Li, Jian-guang, and Shu-qi Wang. Distortion caused by residual stresses in machining aeronautical aluminum alloy parts: recent advances. The International Journal of Advanced Manufacturing Technology. 89.1-4 (2017): 997-1012.

DOI: 10.1007/s00170-016-9066-6

[3] Robinson, Jeremy S., et al. Residual stress relief in the aluminium alloy 7075. Materials Science and Technology. 33.15 (2017): 1765-1775.

DOI: 10.1080/02670836.2017.1318243

[4] Jian, J. I. A. N. G., et al. Evolution and Regulation of Residual Stress in Large and Complex Components during Manufacturing. Journal of Astronautics. 41.6 (2020): 676. (in Chinese).

[5] Gao, Hanjun, et al. Fatigue life of 7075-T651 aluminium alloy treated with vibratory stress relief. International Journal of Fatigue. 108 (2018): 62-67.

DOI: 10.1016/j.ijfatigue.2017.11.011

[6] Lv, Tian, and Yidu Zhang. A combined method of thermal and vibratory stress relief. Journal of Vibroengineering. 17.6 (2015): 2837-2845.

[7] Chen, Shu-Guang, et al. Residual stress relief for 2219 aluminum alloy weldments: a comparative study on three stress relief methods. Metals. 9.4 (2019): 419.

DOI: 10.3390/met9040419

[8] Shuqi, L. I., et al. Numerical and experimental analysis of thermal-vibration stress relief for welded structure. Transactions of the China Welding Institution. (2016). (in Chinese).

[9] Lu Di. Study on the Elimination of Welding Residual Stress of Al-Zn-Mg Alloy by Thermal-Vibration Stress Relief Method. Diss. Harbin Institute of Technology, 2018. (in Chinese).

[10] Zhan, Li-hua, Jiao Zhang, and Shu-feng Jia. Strength evolution rule and its model for stress aging of 2219 aluminum alloy. J. Cent. South Univ. (Sci. Technol.). 47 (2016): 2235-2241.

[11] Gao, Hanjun, et al. Experimental and simulation investigation on thermal-vibratory stress relief process for 7075 aluminium alloy. Materials & Design. 195 (2020): 108954.

DOI: 10.1016/j.matdes.2020.108954

[12] Zheng, Xiaotao, et al. Elastic-plastic-creep response of multilayered systems under cyclic thermo-mechanical loadings. Journal of Mechanical Science and Technology. 32.3 (2018): 1227-1234.

DOI: 10.1007/s12206-018-0226-5