Hertz Contact Mechanics

Problem Specification

Consider a simple problem that illustrates a comparison between the analytical and numerical results.  As shown in the diagram below, consider a problem where we apply a downward force (F) of 60π N to a spherical object with a radius (R₁) of 8 mm.  This isotropic sphere has an axial modulus (E₁) of 1 GPa and a Poisson's ratio (ν₁) of 0.3.  In addition, this sphere is fixed vertically at the contact interface with a rigid wall.  Since we are modeling the wall as a rigid body, we assume axial modulus (E₂) equals +∞ and Poisson's ratio (ν₂) equals 0.  Also, the radius of curvature of the wall (R₂) can be assumed to be zero.

This tutorial was made by Ju Hwan Shin and You Won Park.

Go to Step 1: Pre-Analysis & Start-Up

Go to all ANSYS Learning Modules