Wear Analysis of a Heterogeneous Annular Cylinder

TL;DR

This paper investigates the wear behavior of a heterogeneous annular cylinder using the Method of Dimensionality Reduction, analyzing surface topography, pressure distribution, and steady-state profiles with validation from Boundary Element Method.

Contribution

It introduces a novel approach to analyze wear in heterogeneous annular cylinders, combining MDR and BEM, and provides theoretical calculations for steady wear profiles and surface gradients.

Findings

Pressure stabilizes in each annular ring during wear.

Steady-state surface topography can be theoretically predicted.

Wear coefficients and annular width influence the wear process.

Abstract

The wear of a cylindrical punch composed by two different materials alternatively distributed in annular forms is studied with the Method of Dimensionality Reduction (MDR). The changes in surface topography and pressure distribution during the wear process is obtained and validated by the Boundary Element Method (BEM). The pressure in each annular ring approaches constant in a stationary state where the surface topography does not change any more. Furthermore, in an easier way, using the direct integration the limiting profile in steady wear state is theoretically calculated, as well as the root mean square (RMS) of its surface gradient which is closely related to the coefficient of friction between this kind of surface and an elastomer. The dependence on the wear coefficients and the width of the annular areas of two phases is obtained.