Numerical simulation of typical contact situations of brake friction materials

被引：33

作者：

Dmitriev, A. I. ^{[1
]}

Oesterle, W.

Kloss, H.

机构：

[1] Russian Acad Sci, Inst Strength Phys & Mat Sci, Tomsk, Russia

[2] Fed Inst Mat Res & Testing, Berlin, Germany

来源：

TRIBOLOGY INTERNATIONAL | 2008年 / 41卷 / 01期

关键词：

friction; primary contact; automotive brake system; numerical simulation; method of movable cellular automata;

D O I：

10.1016/j.triboint.2007.04.001

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the paper, a model typical for contact situations of automotive brakes is established based on the method of movable cellular automata. The processes taking place at local contacts in an automotive brake system are analysed. Based on microscopic and microanalytical observations, the following contact situations were simulated: (i) a couple of ferritic steel against pearlitic steel, both covered by an oxide layer mixed with graphite nanoparticles and (ii) the same situation but without oxide layers. The results of calculated mean coefficients of friction of the oxide-on-oxide contact correspond well to expected values for a real braking system, whereas steel-on-steel contact are twice as high. This allows one to make some conclusions; for example, oxide formation will take place more quickly than friction layer elimination, and finally this is responsible for the stabilisation of the coefficient of friction. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1 / 8

页数：8

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