Effect of Shot Peening on the Fatigue Strength of Automotive Tubular Stabilizer Bars DC 218

Open access


This paper concerns issues related to the development of designs of stabilizer bars for new motor vehicle models. It involves not only the designing of a stabilizer bar with the shape required by the manufacturer, but also the preparation of bending and heat treatment processes as well as the performance of strength and fatigue tests. In the prototype development phase, the simulations techniques (FEM) may be used to assess the design. The article contains a detailed analysis of a stabilizer bar designated with the DC 218 VA symbol. Performed numerical strength and fatigue calculations showed that the developed stabilizer bar design with the desired shape did not achieve the required number of fatigue cycles. It was also proven at the test stand by testing a prototype stabilizer bar. Therefore, it was suggested to supplement the technological process with an additional shot peening operation whose main aim was to reduce the length of microcracks on the stabilizer bar’s surface. This effect was confirmed during comparative metallographic tests of not shot – peened and shot – peened stabilizer bars. After shot peening, the analysed stabilizer bar reached a fatigue strength which exceeded the limits set by the manufacturer.

[1] A.M. Wittek. Wpływ czynników konstrukcyjnych i technologicznych na trwałość stabilizatorów w pojazdach samochodowych. PhD thesis. Silesian University of Technology. Katowice (2013).

[2] A. Stenico. Werkstoffmechanische Untersuchungen zur Zahnfußtragfähigkeit einsatzgehärteter Zahnräder. PhD thesis. Technische Universität München (2007).

[3] Y.K. Gao. Improvement of fatigue property in 7050 – T7451 aluminum alloy by laser peening and shot peening. Materials Science and Engineering A 528, 3823–3828 (2011).

[4] S. Bagherifard, I. Fernandez-Pariente, R. Ghelichi, M. Guagliano. Fatigue behavior of notched steel specimens with nanocrystallized surface obtained by severe shot peening. Materials and Design 45, 497 – 503 (2013).

[5] J. Davis. Analytical Modeling and Applications of Residual Stresses Induced by Shot Peening. PhD thesis. University of Washington (2012).

[6] P. Zhang, J. Lindemann. Influence of shot peening on high cycle fatigue properties of the high-strength wrought magnesium alloy AZ 80. Scripta Materialia 52, 485 – 490 (2005).

[7] K.L. Johnson. Contact Mechanics. Cambridge University Press (1985).

[8] W. DuoJ, K. Li, Y. Mei. Mechanical approach to the residual stress field induced by shot peening. Materials Science and Engineering, 147(2), 167 – 173 (1991).

[9] J. Liu. Numerical analysis for effects of shot peening on fatigue crack growth. International Journal of Fatigue 50, 101 – 108 (2013).

[10] X. Song, W.C. Liu, J.P. Belnoue, J. Dong, G.H. Wu, W.J. Ding, S.A.J. Kimber, T. Buslaps, A.J.G. Lunt, A.M. Korsunsky. An eigenstrain-based finite element model and the evolution of shot peening residual stresses during fatigue of GW103 magnesium alloy. International Journal of Fatigue 42, 284 – 295 (2012).

[11] H.Y. Miao, S. Larose, C. Perron, M. Lévesque. On the potential applications of a 3D random finite element model for the simulation of shot peening. Advances in Engineering Software 40, 1023–1038 (2009).

[12] A. Gariépy, S. Larose, C. Perron, M. Lévesque. Shot peening and peen forming finite element modelling – Towards a quantitative method. International Journal of Solids and Structures 48 2859–2877 (2011).

[13] S. Tekeli. Enhancement of fatigue strength of SAE 9245 steel by shot peening. Materials Letters 57, 604–608 (2002).

[14] M.A.S. Torres, H.J.C. Voorwald. An evaluation of shot peening, residual stress and stress relaxation on the fatigue life of AISI 4340 steel. International Journal of Fatigue 24, 877–886 (2002).

[15] A. Molinari, E. Santuliana, I. Cristofolini, A. Rao, S. Libardi, P. Marconi. Surface modifications induced by shot peening and their effect on the plane bending fatigue strength of a Cr – Mo steel produced by powder metallurgy. Materials Science and Engineering A 528, 2904–2911 (2011).

[16] K.A. Soady, B.G. Mellor, J. Shackleton, A. Morris, P.A.S. Reed: The effect of shot peening on notched low cycle fatigue. Materials Science and Engineering A 528, 8579–8588 (2011).

[17] S. Daichendt. Relaxation strahlbedingter Eigenspannungen unter kombiniert thermisch–mechanischer Beanspruchung in Laserstrahl – Schweißverbindungen einer AlSiMgCu–Knetlegierung. PhD thesis. Universität Kassel, Kassel (2011).

[18] R. Herzog, W. Zinn, B. Scholtes. Zur Aussagefähigkeit der Almenintensität als Kennwert bei der gezielten Eigenspannungserzeugung durch Kugelstrahlen. Mat. –wiss. u. Werkstofftech. 27, S. 608 – 617, VCH Verlagsgesellschaft, Weinheim, (1996).

Archives of Metallurgy and Materials

The Journal of Institute of Metallurgy and Materials Science and Commitee on Metallurgy of Polish Academy of Sciences

Journal Information

IMPACT FACTOR 2016: 0.571
5-year IMPACT FACTOR: 0.776

CiteScore 2016: 0.85

SCImago Journal Rank (SJR) 2016: 0.347
Source Normalized Impact per Paper (SNIP) 2016: 0.740


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 201 194 14
PDF Downloads 150 145 5