Breakdown of the Amontons' Law of Friction in Elastic Object with Friction Obeying Amontons' Law Locally

Details Breakdown of the Amontons' Law of Friction in Elastic Object with Friction Obeying Amontons' Law Locally Breakdown of the Amontons' Law of Friction in Elastic Object with Friction Obeying Amontons' Law Locally

2012-02-08

arxiv.org/abs/1202.1716v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures

Scientific paper

We show that the Amontons' law of friction breaks down in the elastic object which has the friction force obeying the Amontons' law locally. By the finite element method, it is shown that the bulk static friction coefficient decreases with increasing pressure and system length. It also depends on the apparent contact area. These behaviors indicate the breakdown of the Amontons' law and result from the local slip before the onset of bulk sliding. These results are consistent with experiments. An effective one-dimensional model well explains these behaviors analytically.

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