An elastic-plastic shakedown analysis of fretting wear

Wear induced by debris formation is studied under fretting and reciprocatin g sliding conditions. A sintered powder steel alloy is tested. Different co mpaction conditions inducing various surface porosities change the quantity of oil trapped during the final oil quenching and consequently modify the friction behavior. The study reveals a strong variation of the wear coeffic ient in relation to the friction coefficient. A low wear regime is observed for low friction coefficients, whereas high wear coefficients are observed for high friction values. This evolution is analyzed considering elastic, elastic shakedown and plastic shakedown conditions which are imposed on the material. The wear behavior of the studied tribosystem concludes that to b etter identify the intrinsic wear resistance of a material, the energy appr oach, which consists of a comparison of the wear volume to the cumulated di ssipated energy is more appropriate. (C) 2001 Elsevier Science B.V. All rig hts reserved.