Finite-Element Analysis of the Influence of Edge Geometry on Shot Peening Process
Publication: Journal of Aerospace Engineering
Volume 22, Issue 2
Abstract
Shot peening involves bombarding the surface of a metal part with small spherical media called shot. It creates a uniform layer of compressive residual stress at surfaces and considerably increases the part life. This study is devoted to an evaluation of the edge (corner) effects in the shot peening process. Geometry variations in metal parts such as edges or corners cause variance in the residual stress profile induced by shot peening. This paper presents the finite-element modeling and scheme that we use to simulate the shot peening process by both single impact and multiple impacts for part geometries with different edge radii. The results achieved show that, after the same shot peening process, a part with a relatively larger edge radius results in a satisfactory residual stress profile which could equal or exceed that expected for a part with a smaller edge radius. The results may enable the automated edge preprocess step for shot peening with an easily machined large radius to reduce cost and improve productivity.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The writers would like to thank Joseph Keenan for fruitful discussions.
References
Al-Obaid, Y. F. (1990). “Three dimensional dynamic finite element analysis for shot peening mechanics.” Comput. Struct., 36(4), 681–689.
Batista, A., Dias, A., Lebrun, J., Flour, J. L., and Inglebert, G. (2000). “Contact fatigue of automotive gears: evolution and effects of residual stresses introduced by surface treatments.” Fatigue Fract. Eng. Mater. Struct., 23(3), 217–228.
Baughman, D. L. (1981). “The evolution of centrifugal wheel shot peening in aerospace industry and recent applications.” Proc., 1st Int. Conf. on Shot Peening, France’s Centre Technique des Industries Mécaniques, Paris.
De Los Rios, E. R., Trooll, M., and Levers, A. (1999). “Improving the fatigue crack resistance of 2024-T351 aluminium alloy by shot peening.” Life extension—Aerospace technology opportunities, Vol. 26, The Royal Aeronautical Society Publication, London, 1–8.
De Los Rios, E. R., Walley, A., Milan, M. T., and Hammersley, G. (1995). “Fatigue crack initiation and propagation on shot-peened surfaces in A316 stainless steel.” Int. J. Fatigue, 17(7), 493–499.
Ebenau, A., Vöhringer, O., and Macherauch, E. (1987). “Influence of the shot peening angle on the condition of near surface layers in materials.” Proc., 3rd Int. Conf. on Shot Peening, The International Scientific Committee on Shot Peening, Garmisch Partenkirchen, Germany.
Eby, D., and Averill, R. C. (2000). “Zigzag sublaminate model for nonlinear analysis of laminated panels.” J. Aerosp. Eng., 13(3), 100–109.
Edberg, J., Lindgren, L., and Ken-ichiro, M. (1995). “Shot peening simulated by two different finite element formulations.” Proc., 5th Int. Conf. Numerical Methods in Industrial Forming Process, NUMIFORM’95, Ithaca, N.Y., S. F. Shen and P. R. Dawson, eds., Balkema, Rotterdam.
Frija, M., Hassine, T., Fathallah, R., Bouraoui, C., and Dogui, A. (2006). “Finite element modelling of shot peening process: Prediction of the compressive residual stresses, the plastic deformations and the surface integrity.” Mater. Sci. Eng., A, 426(1–2), 173–180.
Goldberg, R. K., Roberts, G. D., and Gilat, A. (2005). “Implementation of an associative flow rule including hydrostatic stress effects into the high strain rate deformation analysis of polymer matrix composites.” J. Aerosp. Eng., 18(1), 18–27.
Iida, K. (1984). “Dent and affected layer produced by shot peening.” Proc., 2nd Int. Conf. on Shot Peening, The International Scientific Committee on Shot Peening, Chicago.
Keenan, J. (2003). “Aluminum shot peening: Preparation of part edges via machining, the triple pass machined edge.” SR 10351, The Boeing Company, Seattle.
Kobayashi, M., Matsui, T., and Murakami, Y. (1998). “Mechanism of creation of compressive residual stress by shot peening.” Int. J. Fatigue, 20(5), 351–357.
Kopp, R., and Ball, H. W. (1987). “Recent development in shot peen forming.” Proc., 3rd Int. Conf. on Shot Peening, The International Scientific Committee on Shot Peening, Garmisch Partenkirchen, Germany, 298–307.
Levers, A., and Prior, A. (1998). “Finite element analysis of shot peening.” J. Mater. Process. Technol., 80–81, 304–308.
Livermore Software Technology Corporation. (1997). LS-DYNA keyword user’s manual, Version 970. Livemore, Calif.
Meguid, S. A., and Klair, M. S. (1984). “Finite element studies into incomplete coverage in shot peening.” Proc., 2nd Int. Conf. on Shot Peening, The International Scientific Committee on Shot Peening, Chicago.
Meguid, S. A., Shagal, G., and Stranart, J. C. (2002). “3D FE analysis of peening of strain-rate sensitive materials using multiple impingement model.” Int. J. Impact Eng., 27(2), 119–134.
Miller, K. J. (1993). “Material science perspective of metal fatigue resistance.” Mater. Sci. Technol., 9(6), 453–462.
Namjoshi, S. A., Jain, V. K., and Mall, S. (2002). “Effects of shot-peening on fretting-fatigue behavior of Ti-6Al-4V.” J. Eng. Mater. Technol., 124(2), 222–228.
Pratt, J. D., and Pardoen, G. (2002a). “Influence of head geometry on bolted joint behavior.” J. Aerosp. Eng., 15(4), 136–153.
Pratt, J. D., and Pardoen, G. (2002b). “Numerical modeling of bolted lap joint behavior.” J. Aerosp. Eng., 15(1), 20–31.
Qiao, P., and Wang, J. (2005). “Mechanics of composite sinusodial honeycomb cores.” J. Aerosp. Eng., 18(1), 42–50.
Roberts, G., Pereira, J. M., Revilock, D. M., Binienda, W. K., Xie, M., and Braley, M. (2005). “Ballistic impact of braided composites with a soft projectile.” J. Aerosp. Eng., 18(1), 3–7.
Roberts, G., Revilock, D. M., Binienda, W. K., Nie, W. Z., Mackenzie, S. B., and Todd, K. B. (2002). “Impact testing and analysis of composites for aircraft engine fan cases.” J. Aerosp. Eng., 15(3), 104–110.
Robertson, G. T. (1997). “The effects of shot size on the residual stresses resulting from shot peening.” The Shot Peener, 11(3), 46–48.
Rodopoulos, C. A., Curtis, S. A., De Los Rios, E. R., and SolisRomero, J. (2004). “Optimization of the fatigue resistance of 2024-T351 aluminium alloys by controlled shot peening-methodology, results and analysis.” Int. J. Fatigue, 26(8), 849–856.
Rouhaud, E., and Deslaef, D. (2002). “Influence of shots’ material on shot peening, A finite element model.” Mater. Sci. Forum, 404–407, 153–158.
Schiffner, K., and Helling, C. D. (1999). “Simulation of residual stresses by shot peening.” Comput. Struct., 72(1), 329–340.
Schwarzer, J., Schulze, V., and Vöhringer, O. (2003). “Evaluation of the influence of shot peening parameters on residual stress profiles using finite element simulation.” Mater. Sci. Forum, 426–432(5), 3951–3956.
Shaw, B. A., Aylott, C., O’hara, P., and Brimble, K. (2003). “The role of residual stress on the fatigue strength of high performance gearing.” Int. J. Fatigue, 25(9–11), 1279–1283.
Song, P., and Wen, C. (1999). “Crack closure and crack growth behaviour in shot peened fatigued specimen.” Eng. Fract. Mech., 63(3), 295–304.
Stefanescu, D., Santisteban, J. R., Edwards, L., and Fitzpatrick, M. E. (2004). “Residual stress measurement and fatigue crack growth prediction after cold expansion of cracked fastener holes.” J. Aerosp. Eng., 17(3), 91–97.
Torres, M. A. S., and Voorwald, H. J. C. (2002). “An evaluation of shot peening, residual stress and stress relaxation on the fatigure life of AISI 4340 steel.” Int. J. Fatigue, 24(8), 877–886.
Information & Authors
Information
Published In
Journal of Aerospace Engineering
Volume 22 • Issue 2 • April 2009
Pages: 153 - 159
Copyright
© 2009 ASCE.
History
Received: Feb 5, 2007
Accepted: Mar 13, 2008
Published online: Apr 1, 2009
Published in print: Apr 2009
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.