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RESEARCH PAPERS

Shape and Frequency Composition of Pulses From an Impact Pair

[+] Author and Article Information
R. G. Herbert, D. C. McWhannell

Mechanical Engineering Department, University of Southampton, U.K.

J. Eng. Ind 99(3), 513-518 (Aug 01, 1977) (6 pages) doi:10.1115/1.3439270 History: Received June 21, 1976; Online July 15, 2010

Abstract

With the need to improve the reliability and noise emissions from real mechanisms, an impact in the classical impact pair configuration is investigated considering the impact pulse level and its frequency composition as possible sources of high-frequency energy in articulated systems. The analog representation of the impact pair uses a nonlinear surface stiffness together with a nonlinear surface damping. Developments of the Dubowsky model carried out by Crossley are further extended to allow the surface damping coefficient, as a function of the coefficient of restitution, to be calculated assuming energy is dissipated throughout the impact for any series power law representation of the surface stiffness. The practical system used by Veluswami is simulated, and the results for Dubowsky, Crossley, and the direct solution are compared to Veluswami’s practical data.

Copyright © 1977 by ASME
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