Dynamic finite element analysis of shot peening process of 2618-T61 aluminium alloy

Document Type : Article


1 Centres of Excellence in Science & Applied Technologies (CESAT), Islamabad, Pakistan.

2 Department of Mechanical Engineering, CECOS University of IT and Emerging Sciences, Peshawar, Pakistan.


Shot peening is one of the surface treatment processes usually used for the improvement of fatigue strength of metallic parts by inducing residual stress field in them. The evaluation of shot peening parameters experimentally is not only very complex but costly as well. An attractive alternative is the explicit dynamics finite element (FE) analysis having the capability of accurately envisaging the shot peening process parameters using a suitable material’s constitutive model and numerical technique. In this study, ANSYS/LS-DYNA software was used to simulate the impact of steel shots of various sizes on 2618-T61 aluminium alloy plate described with strain rate dependent elasto-plastic material model. The impacts were carried out at various incident velocities. The effect of shot velocity and size on the induced compressive residual stress and plastic deformation were investigated. The results demonstrated that increasing the shot velocity and size yielded in an increase in plastic deformation of the aluminium target. However, as observed, the effect of shot velocity and size was small in magnitude on the target's subsurface compressive residual stress.


Main Subjects

1. Meguid, S.A., Shagal, G., Stranart, J.C., and Daly, J., "Three-dimensional dynamic finite element analysis of shot-peening induced residual stresses", Finite Elem. Anal. Des, 31(3), pp. 179-191 (1999).
2. Majzoobi, G., Azizi, R, and Nia, A.A. "A threedimensional simulation of shot peening process using multiple shot impacts", J. of Mater. Proc. Tech., 164, pp. 1226-1234 (2005).
3. Hong, T., Ooi, J., and Shaw, B. "A numerical simulation to relate the shot peening parameters to the induced residual stresses", Eng. Fail. Anal., 15(8), pp. 1097-1110 (2008).
4. Mann, P., Miao, H.Y. Gariepy, A., Levesque, M., and Chromik., R.R. "Residual stress near single shot peening impingements determined by nanoindentation and numerical simulations", J. of Mater. Sci., 50(5), pp. 2284-2297 (2015).
5. Shukla, P.P., Swanson, P.T., and Page, C.J. "Laser shock peening and mechanical shot peening processes applicable for the surface treatment of technical grade ceramics: A review", Proc Inst Mech Eng B J Eng Manuf., 228(5), pp. 639-652 (2014).
6. Tang. L, Yao, C., Zhang, D., and Ren, J. "Empirical modeling of compressive residual stress profile in shot peening TC17 alloy using characteristic parameters and sinusoidal decay function", Proc Inst. Mech. Eng. B. J. Eng. Manuf. (2016).
7. Marini, M., Fontanari, V., Bandini, M., and Benedetti, M. "Surface layer modifications of micro-shot-peened Al-7075-T651: Experiments and stochastic numerical simulations", Surf. Coat. Technol, 321 (Supplement C), pp. 265-278 (2017).
8. Jebahi, M., Gakwaya, A., Levesque, J., Mechri, O., and Ba, K. "Robust methodology to simulate real shot peening process using discrete-continuum coupling method", Int. J. of Mech. Sci., 107, pp. 21-33 (2016).
9. Al-Obaid, Y.F. "Three-dimensional dynamic finite element analysis for shot-peening mechanics", Comput. & Struct., 36(4), pp. 681-689 (1990).
10. Meguid, S.A., Shagal, G., and Stranart, J. "3D FE analysis of peening of strain-rate sensitive materials using multiple impingement model", Int. J. of Imp. Eng., 27(2), pp. 119-134 (2002).
11. Kang, X., Wang, T., and Platts, J. "Multiple impact modelling for shot peening and peen forming", Proc Inst Mech Eng B J Eng Manuf, 224(5), pp. 689-697 (2010).
12. ElTobgy, M.S., Ng, E., and Elbestawi, M.A. "Threedimensional elastoplastic finite element model for residual stresses in the shot peening process", Proc Inst Mech Eng B J Eng Manuf, 218(11), pp. 1471- 1481 (2004).
13. Bagherifard, S., Ghelichi, R., and Guagliano, M. "Mesh sensitivity assessment of shot peening finite element simulation aimed at surface grain refinement", Surf. Coat. Technol, 243, pp. 58-64 (2014).
14. Bhuvaraghan, B., Maffeo, S.S.B., McCLain, R., Potdar, Y., and Prakash, O. "Shot peening simulation using discrete and finite element methods", Adv. in Eng. Soft., 41(12), pp. 1266-1276 (2010).
15. Chen, Z., Yang, F., and Meguid, S. "Realistic finite element simulations of arc-height development in shotpeened almen strips", J. of Eng. Mater. and Tech., 136(4), p. 041002 (2014).
16. Hassani-Gangaraj, S.M., Cho, K.S., Voigt, H.-J.L., Guagliano, M., and Schuh, C.A. "Experimental assessment and simulation of surface nano crystallization by severe shot peening", Acta Mater., 97, pp. 105-115 (2015).
17. Jiabin, Z., Shihong, L., Tianrui, W., Zhen, Z., andWei, Z. "An evaluation on SP surface property by means of combined FEM-DEM shot dynamics simulation", Adv. in Eng. Soft., 115 (Supplement C), pp. 283-296 (2018).
18. Xiao, X., Tong, X., Goa, G., Zhao, R., Liu, Y., and Li, Y., "Estimation of peening effects of random and regular peening patterns", J. of Mater. Proc. Tech., 254 (Supplement C), pp. 13-24 (2018).
19. Tu, F., Delbergue, D., Miao, H., Klotz, T., Brochu, M., Bocher, and P., and Levesque, M. "A sequential DEMFEM coupling method for shot peening simulation", Surf. Coat. Technol, 319 (Supplement C), pp. 200-212 (2017).
20. MIL-HDBK-5J - Metallic Materials and Elements for Aerospace Vehicle Structures, D.o.D. Handbook, Editor USA (2003).
21. Johnson, G.R. and Cook, W.H. "A constitutive model and data for metals subjected to large strains, high strain rates and high temperatures", in Proc. of the 7th Int. Sym. on Ballist., The Hague, The Netherlands, (1983).
22. Muhammad, R., Ahmed, Ullah, H., and Silberschmidt, V.V. "Dynamic behaviour of fi-Ti-15333 in ultrasonically assisted turning: Experimental and numerical analysis", Scientia Iranica, Transac. B: Mech. Eng., 24(6), pp. 2904-2914 (2017).
23. Hfaiedh, N., Peyre, P., Song, H., Popa, I., Ji, V., and Vignal, V. "Finite element analysis of laser shock peening of 2050-T8 aluminum alloy", Int. J. of Fatig., 70, pp. 480-489 (2015).
24. ANSYS LS-DYNA User's Guide Ver 16.0. (2016).
25. Shaw, K.D.L. "Comparison between shot peening and surface nano crystallization and hardening processes", Mater. Sci. and Eng. A., 463, pp. 46-53 (2007).
26. Mylonas, G.I. and Labeas, G. "Numerical modelling of shot peening process and corresponding products: Residual stress, surface roughness and cold work prediction", Surf. Coat. Technol., 205(19), pp. 4480-4494 (2011).
27. Guagliano, M. "Relating Almen intensity to residual stresses induced by shot peening: a numerical approach", J. of Mater. Proc. Tech, 110(3), pp. 277-286 (2001).