Surface Plastic Deformation by Sliding Elliptical Cylinder

Rostislav I Nepershin

doi:10.4236/msce.2015.31001

Abstract

Steady state plastic flow of the ideal plastic half-space surface by sliding elliptical cylinder is numerically calculated with account of contact friction effect. Numerical solution of the plane strain hyperbolic differential equations with unknown contact pressure distribution is treated as nonlinear vector equation for the steady state plastic flow condition. Pronounced effect of the ellipse boundary curvature on the plastic flow mode is shown. Engineering application of the computer model is surface plastic deformation technology to improve wear and fatigue resistance of metal parts.

Highlights

Surface plastic deformation by rigid tools is used in engineering technology to increase wear and fatigue resistance of metal contact parts
Present steady state plastic flow model of surface layer is developed for rigid elliptical cylinder sliding with contact friction consideration
Steady state plastic flow of an ideal plastic half-space surface layer induced by sliding of loaded long elliptical cylinder is considered

Summary

Introduction

Surface plastic deformation by rigid tools is used in engineering technology to increase wear and fatigue resistance of metal contact parts. Specification of technology parameters for surface plastic deformation is difficult engineering problem induced by complex elastic-plastic deformation of the surface layer. Finite element analysis of rigid cylinder rolling along elastic-plastic half space is considered in [1] [2]. Steady state ideal plastic flow induced by rolling of rigid cylinder is considered in [5] using a small parameter approach. Steady state plastic flow of surface layer induced by rolling and sliding of circular cylinder is investigated in [7]-[9]. Present steady state plastic flow model of surface layer is developed for rigid elliptical cylinder sliding with contact friction consideration.

Problem Formulation

Boundary Conditions

Numerical Solution

Numerical Results

Conclusions