Prediction of Fatigue Life of Coil Springs and Lower Suspension Arms Based on Strain-Life Approach
Abstract
This study predicts the fatigue life of helical coil springs and lower suspension arms in automotive suspension systems using the strain-life approach. The strain-life method, which incorporates local plastic strain effects, is particularly suitable for components experiencing variable amplitude loading under road-induced vibrations. Finite element analysis (FEA) was employed to determine critical strain locations and magnitudes under typical loading conditions. Fatigue life was estimated using the Coffin-Manson relation, with mean stress corrections via the Morrow and Smith-Watson-Topper (SWT) models. Results indicate that coil springs exhibit fatigue lives ranging from 10⁵ to 10⁶ cycles under rural road excitations, while lower suspension arms show shorter lives at high-stress regions due to multiaxial loading. The findings highlight the importance of material selection and geometry optimization for improved durability in automotive applications
Author Biographies
Department of Mechanical Engineering, Institute of Technology of Cambodia Phnom Penh, Russian Federation Blvd (110), Phnom Penh 120404, Cambodia
How to Cite
License & Copyright
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
This is an open-access journal. All articles are distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Creative Commons Attribution 4.0 International (CC BY 4.0)Under this license, you are free to:
- Share: copy, distribute, and transmit the work in any medium or format.
- Adapt: remix, transform, and build upon the work for any purpose, even commercially.
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
Copyright and Retention Copyright & Retention Authors retain copyright without restrictions and grant this journal the right of first publication under an open-access model. The journal retains non-exclusive publishing rights for archiving, indexing, and scholarly dissemination.References
Total: 8 References- Rahman, M. M., Hassan, M. A., Rahman, M. A., & Noor, M. M. (2009). Fatigue life prediction of lower suspension arm using strain-life approach. ResearchGate. https://www.researchgate.net/publication/230737380_Fatigue_Life_Prediction_of_Lower_Suspension_Arm_Using_Strain-Life_Approach
- Kong, Y. S., Abdullah, S., Schramm, D., Omar, M. Z., & Bruckmann, T. (2019). Fatigue reliability assessment of an automobile coil spring. Metals, 10(1), Article 12. https://www.mdpi.com/2075-4701/10/1/12
- Abdullah, S., Kong, Y. S., Omar, M. Z., & Schramm, D. (2018). Vibration fatigue analysis of carbon steel coil spring under various road excitations. Metals, 8(8), Article 617. https://www.mdpi.com/2075-4701/8/8/617
- Lemu, H. G., Kong, Y. S., Abdullah, S., & Omar, M. Z. (2023). Fatigue life modelling of steel suspension coil springs based on wavelet vibration features. Metals, 13(6), Article 1043. https://pmc.ncbi.nlm.nih.gov/articles/PMC10051819/
- Kihong, S., Kim, J., & Lee, S. (2020). Durability assessment of suspension coil spring considering the multifractality of road excitations. Engineering Failure Analysis, 115, 104658.
Similar Articles
Explore related articles published in this journal.