Numerical Simulation of Mechanically Mixed Layer Formation at Local Contacts of an Automotive Brake System
Numerical Simulation of Mechanically Mixed Layer Formation at Local Contacts of an Automotive Brake System
复制标题
汽车制动系统局部接触处机械混合层形成的数值模拟
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
H. Kloss
中科院分区：
文献类型：
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作者：
A. Dmitriev;W. Österle;H. Kloss
采用可动元胞自动机的方法，在计算机模拟的基础上，对汽车制动系统局部接触点的过程进行了分析。研究了摩擦表面上机械混合层（MML）形成的条件以及该层对摩擦系数的影响。结果表明，MML 的形成使摩擦系数稳定在适合制动应用的范围（0.3-0.4）。 MML 中石墨颗粒的存在降低了局部法向应力的临界值，从而随着 MML 的形成从粘滑运动切换到平滑的相对运动。
Processes taking place at local contacts in an automotive brake system are analyzed on the basis of computer simulation with the method of movable cellular automata. The conditions of a mechanically mixed layer (MML) formation on the tribosurfaces and the influence of the layer on the friction coefficient are investigated. The results show that the MML formation leads to the stabilization of the coefficient of friction at a convenient range (0.3–0.4) for brake application. The presence of graphite particles in the MML decreases the critical value of local normal stress for switching from stick-slip to smooth relative motion with MML formation.