Instable Waves between Rough Elastic Bodies in Sliding Contact | Zendy

Graf Matthias | Zendy; Ostermeyer GeorgPeter | Zendy

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Instable Waves between Rough Elastic Bodies in Sliding Contact

Author(s) -

Graf Matthias,

Ostermeyer GeorgPeter

Publication year - 2011

Publication title -

pamm

Language(s) - English

Resource type - Journals

ISSN - 1617-7061

DOI - 10.1002/pamm.201110303

Subject(s) - tribology , brake , instability , inertia , materials science , brake pad , layer (electronics) , disc brake , mechanics , surface (topology) , contact area , composite material , physics , classical mechanics , geometry , mathematics , metallurgy

Most sliding bodies are not perfectly flat, but show a rough surface topography or tribological layer. This paper analyses a sliding system consisting of two elastic bodies with continuous contact and steady sliding. Surface topographies are taken into account by an inertia film on one of the sliding surfaces. A linear model is developed that allows an analytical solution. As a typical tribological system, the contact between pad and disc in a brake system is discussed. It can be shown that unstable elastic waves travel through the contact between both bodies. This instability is opened only when a tribological layer on the brake pad is taken into account. This microscopic excitation can cause a loss of stability of the entire (brake) system. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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