Numerical studies on the surface effects caused by inhomogeneities on torsional fretting

摘要

This research explores the influence of inhomogeneities on the torsional fretting via a newly developed semi-analytical method with considering the load history. The disturbances of elastic fields caused by inhomogeneities are modeled based on Eshelby's equivalent inclusion method. Solutions are achieved iteratively through considering the coupling of surface tractions and subsurface inhomogeneities. The influences of a single inhomogeneity are investigated, revealing that the presence of an inhomogeneity causes significant surface effects on the torsional fretting. Further, the influences of inhomogeneity distribution parameters on the torsional fretting performance are quantified, demonstrating the capability of the proposed method. (C) 2015 Elsevier Ltd. All rights reserved.