A model for multiple loading-unloading of an elastic-plastic sphere and a rigid flat is presented to cover a wide range of loading conditions far beyond the elastic limit. It is shown that although most of the plastic deformation occurs during the first loading, additional plastic deformation may evolve during the first unloading and a few subsequent loading-unloading cycles.
Multiple Loading-Unloading of an Elastic-Plastic Spherical Contact
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Kadin, Y, Kligerman, Y, & Etsion, I. "Multiple Loading-Unloading of an Elastic-Plastic Spherical Contact." Proceedings of the World Tribology Congress III. World Tribology Congress III, Volume 1. Washington, D.C., USA. September 12–16, 2005. pp. 215-216. ASME. https://doi.org/10.1115/WTC2005-63148
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