Elastic-plastic finite element analyses of a cylinder-on-plate configuration, studied experimentally, were performed to provide an explanation for the decrease in fretting fatigue life with increasing contact pressure. Three values of normal load, namely 1338 N, 2230 N, and 3567 N, and three stress ratios (0.1, 0.5, and 0.7) were considered. Based on a previously determined dependency between contact pressure and friction coefficient, the effect of coefficient of friction was also evaluated. The deformation remained elastic under all conditions examined. Cyclic, interfacial stresses, and slips were analyzed in detail. The amplification of remotely applied cyclic stress in the contact region is shown to provide a rationale for the effect of contact pressure and stress amplitude on life. Comparisons with previous experiments indicate that the local stress range computed from finite element analysis may be sufficient for predicting fretting fatigue life. Further, the results suggest that the slip amplitude and shear traction may be neglected for this purpose.
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January 2001
Technical Papers
Analyses of Contact Pressure and Stress Amplitude Effects on Fretting Fatigue Life
K. Iyer,
K. Iyer
Department of Aeronautical and Astronautics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433-7817
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S. Mall
S. Mall
Materials and Manufacturing Directorate (AFRL/MLLN), Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7817
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K. Iyer
Department of Aeronautical and Astronautics, Air Force Institute of Technology, Wright-Patterson AFB, OH 45433-7817
S. Mall
Materials and Manufacturing Directorate (AFRL/MLLN), Air Force Research Laboratory, Wright-Patterson AFB, OH 45433-7817
Contributed by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received by the Materials Division May 25, 1999; revised manuscript received January 21, 2000. Associate Technical Editor: H. Sehitoglu.
J. Eng. Mater. Technol. Jan 2001, 123(1): 85-93 (9 pages)
Published Online: January 21, 2000
Article history
Received:
May 25, 1999
Revised:
January 21, 2000
Citation
Iyer, K., and Mall, S. (January 21, 2000). "Analyses of Contact Pressure and Stress Amplitude Effects on Fretting Fatigue Life ." ASME. J. Eng. Mater. Technol. January 2001; 123(1): 85–93. https://doi.org/10.1115/1.1288211
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