Deterministic investigation of the contact behavior of nominally curved rough surfaces

Abstract

Purpose This study aims to investigate the contact behavior of nominal curved surfaces with random roughness. Design/methodology/approach A deterministic model was applied to investigate the contact behavior. Numerical calculations were conducted on Gaussian and fractal profiles under a range of loading conditions. The deformation behavior is characterized in terms of three regimes including the elastic, elastoplastic and plastic regimes. Findings A linear relationship was observed between the real contact areas and normal loads, which is mainly governed by the plastic deformation. Surface roughness changes contact behavior by influence the transition of deformation regimes. Rougher surfaces generally demonstrate higher saturated plastic ratios. Originality/value The contact behavior of nominally curved surfaces with random roughness is understood in terms of the evolution of real contact areas and plastic ratios. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2019-0190.