This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Comparison of Mean Stress Correction Methods for Fatigue Life Prediction
Technical Paper
2000-01-0778
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
In design for durability, it is generally believed that a compressive mean stress is beneficial and a tensile mean stress is detrimental. Quantitatively the effect of mean stress on fatigue life however is still inconclusive and may very well depend on both the material used and the loading conditions. Over the years, many models have been proposed to help predict mean stress effects. For example, in the long life region, Goodman's formula is widely used, while the Smith-Watson-Topper damage parameter seems the most popular for use in computerized local strain based fatigue tools. In this paper, several frequently cited mean stress correction methods together with the most recent crack closure based method are compared in various ways. Particular emphasis is given to the effect of yield level mean stresses, which has been traditionally neglected but is of practical importance to the ground vehicle industry.
Recommended Content
Technical Paper | Flexforming of Prototype and Low-Volume Parts |
Technical Paper | Pulsating Blankholder Technology |
Aerospace Standard | Hardness Testing of Elastomeric O-Rings |
Authors
Citation
Chu, C., "Comparison of Mean Stress Correction Methods for Fatigue Life Prediction," SAE Technical Paper 2000-01-0778, 2000, https://doi.org/10.4271/2000-01-0778.Also In
References
- DuQuesnay, D.L. “Fatigue Damage Accumulation in Metals Subjected to High Mean Stress and Overload Cycles,” University of Waterloo Waterloo, Ontario, Canada 1991
- Topper, T.H. DuQuesnay, D.L. Pompetzki, M.A. “Crack Closure, Damage and Short Crack Growth under Variable Amplitude Loading,” Theoretical Concepts and Numerical Analysis of Fatigue University of Birmingham, U.K., Chameleon Press 201 235 1992
- Chu, C.-C. Bonnen, J.J.F “Determining The Material Fatigue Curve Using The Critical Plane Approach,” Multiaxial Fatigue of an Induction Hardened Shaft Cordes T. Lease K. SAE AE-28 141 148 1999
- Bonnen, J.J.F. “Multiaxial Fatigue Response of Normalized 1045 Steel Subjected to Periodic Overloads: Experiments and Analysis,” University of Waterloo Waterloo, Ontario, Canada 1998
- DuQuesnay, D.L. Pompetzki, M.A. Topper, T.H. “Fatigue Life Prediction for Variable Amplitude Strain Histories,” SAE Paper No. 930400 1993