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Some Considerations in Using Strain-Life Approach in Fatigue Design
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English
Abstract
The use of the strain-life technique in designing for finite fatigue life is discussed. The difference in mathematical form of the cyclic stress-strain curve and hysteresis loops is explained. Examples are given to illustrate that stronger materials are not necessarily better for fatigue resistance. The importance of the knowledge of actual operating conditions of components and structures in designing for finite life is emphasized. Conditions under which the strain-life and Kf-Δs methods yield the same results are derived. A list of materials which satisfy these conditions is included.
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Citation
Seshadri, T. and Pierce, P., "Some Considerations in Using Strain-Life Approach in Fatigue Design," SAE Technical Paper 790889, 1979, https://doi.org/10.4271/790889.Also In
References
- Morrow JoDean “Cyclic Plastic Strain Energy and Fatigue of Metals” Internal Friction, Damping and Cyclic Plasticity 1965 45 87
- “Technical Report on Fatigue Properties” SAE J1099, an SAE Information Report, SAE 1978 Handbook 4.44 4.52
- Landgraf R. W. “The Resistance of Metals to Cyclic Deformation, Achievement of High Fatigue Resistance in Metals and Alloys” 1970 3 36