Stress Analysis of the Automobile's Coil Spring Including Residual Stresses by Shot Peening

Abstract:

Durability assessment for the suspension system of the vehicle is very important. In order to secure reliability on the results of durability assessment and fatigue design criterion, accurate stresses for the interesting component must be basically calculated. In this paper, numerical stress analyses for the automobile’s coil spring were performed. Residual stresses by shot peening were also analyzed. The effects of the stress analysis results on fatigue strength of the coil spring were discussed. From the results, fatigue durability of the shot peened coil spring could be considerably improved by the effects of compressive residual stress. However, being attacked by corrosive environments, it could decrease by corrosion fatigue degradation.

• Periodical: Key Engineering Materials (Volumes 306-308)
• Pages: 459-464
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.306-308.459
• Online since: March 2006
• Authors: Dong Ho Bae, Gyu Young Lee, Won Seok Jung
• Keywords: Coil Spring, Fatigue Strength, Residual Stress, Shot Peening, Stress Analysis, Suspension System

References

[1] S. M. Jung and D. C. Han: Machine Design (Dong Myung Co. 1996), p.481~484.

[2] ASTM, Standard Practice for Conducting Constant Amplitude Axial Fatigue Tests of Metallic Materials, E466~82 (1993), p.567~571.

[3] Denny A, Jones, Principles and Prevention of Corrosion (Prentice-Hall, inc. 1996), p.244~245.