Noise of sliding rough contact

15th Anglo-French Physical Acoustics Conference

Le Bot, Alain^1

Ecole Centrale de Lyon, CNRS LTDS UMR 5513, 36, Av. Guy de Collongue, Ecully

69134, France^1

关键词: Contact Mechanics;    Friction noise;    Number of sources;    Rough contact;    Rough surfaces;    Sound source;    Statistical problems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/797/1/012006/pdf
DOI  :  10.1088/1742-6596/797/1/012006

来源: IOP

【 摘 要 】

This article is a discussion about the origin of friction noise produced when rubbing solids having rough surfaces. We show that noise emerges from numerous impacts into the contact between antagonist asperities of surfaces. Prediction of sound sources reduces to a statistical problem of contact mechanics. On the other hand, contact is also responsible of dissipation of vibration. This leads to the paradoxical result that the noise may not be proportional to the number of sources.