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Noise Factor Effects on Leaf Spring Fatigue Life
Technical Paper
2012-01-0225
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The main reason for the definition of leaf springs as safety parts is that even the smallest mistake in its functioning can cause severe accidents. It is imperative to ensure the endurance of leaf springs under high deformation and stress.
In this reference study, we examine deviations resulting from production and design variations known as” noise factor” which can affect the fatigue life of a parabolic leaf spring. It will be a mistake to evaluate the design roughly with the stress levels on the layer. It has been described in this study with relevant examples that the leaf spring with 1550 N/mm2 tensile strength may be broken under much lower stress levels if it is exposed to dynamic loads.
Criteria for the eye forms design and the fatigue behavior of eye forms, the effect on fatigue of leaf spring end form differences, the effect on fatigue of leaf springs with the same rate value designed in different cross-sections, u-bolt fixing force effects and similar topics have been verified with finite element analysis and endurance rig outputs, and the evaluation results are presented in this study. This study, carried out for different parameters on the same spring, can be used as a reference by leaf spring designers.
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Authors
Citation
Soner, M., Erdogus, T., Guven, N., Karaagac, M. et al., "Noise Factor Effects on Leaf Spring Fatigue Life," SAE Technical Paper 2012-01-0225, 2012, https://doi.org/10.4271/2012-01-0225.Also In
References
- SAE Int. “Manual on Design and Application of Leaf Springs,” SAE International Warrendale, PA 978-0-89883-383-6 1980 10.4271/HS-788
- HD788 1990 “Design and Application of Leaf Spring”
- Yoo, S. Park, J. Lim, J. “Fatigue Strength Evaluation for the Leaf Spring of Commercial Vehicle Considering U-Bolt Fixing Force,” SAE Technical Paper 2007-01-0853 2007 10.4271/2007-01-0853
- Mechanics of Materials 2nd Popov, Egor P. Hardcover Apr 7 1976