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RESEARCH PAPERS

Determination of Ball and Roller Compliances Using a Vibration Measuring Technique

[+] Author and Article Information
A. Sherif

Department of Engineering Mechanics, Military Technical College, Cairo, Egypt

J. Tribol 117(3), 553-557 (Jul 01, 1995) (5 pages) doi:10.1115/1.2831290 History: Received December 20, 1993; Revised September 12, 1994; Online January 24, 2008

Abstract

A new experimental method to estimate the compliances induced by the compression of smooth steel balls and rollers of different sizes, between two rigid flat smooth surfaces, is presented. When a single-degree-of-freedom system is brought into contact with an elastic body whose mass can be neglected, the system’s natural frequency will increase by virtue of the additional stiffness produced due to contact with the elastic body. If the system’s natural frequency is measured with and without contact with such elastic body, at different applied normal loads, it is possible to calculate the corresponding body stiffness and compliance is then obtained. A simple test rig has been built to investigate the feasibility of this approach. A comparison of the theoretically calculated values of compliances, using Hertz theory and the formula quoted by Palmgren with those determined experimentally, demonstrates the applicability of this new technique and shows good accuracy.

Copyright © 1995 by The American Society of Mechanical Engineers
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