湿式制动轴对称摩擦生热与摩擦因数/热磨损特性分析

被引：2

作者：

罗天洪 ^{[1
]}

吴小川 ^{[1
]}

罗文军 ^{[2
]}

林超 ^{[2
]}

机构：

[1] 重庆交通大学机电与汽车工程学院

[2] 重庆大学机械传动国家重点实验室

来源：

机械传动 | 2014年 / 38卷 / 03期

关键词：

轴对称; 热磨损; 摩擦因数; 对流传热;

D O I：

10.16578/j.issn.1004.2539.2014.03.033

中图分类号：

U463.51 [制动器];

学科分类号：

摘要：

多片式湿式摩擦制动器工作中产生大量的摩擦热,引起摩擦工作表面产生局部高温、表面氧化和材料系数变化。其中热疲劳磨损和热摩擦因数两者的变化对制动稳定性的影响非常重要,通过建立基于"轴对称"梯度变化的摩擦热流及对流换热热传导数学模型和摩擦因数及热磨损与相关参数响应特性函数模型,分析了摩擦副的瞬态温度、制动时间与摩擦因数、热磨损量、热磨损率之间的对应分布。分析结果表明:温度、时间的变化对摩擦因数、热磨损有很大的影响,通过控制温度、时间可以改变摩擦副材料的摩擦因数、热磨损量,从而在紧急制动、持续制动过程能够减少事故的发生率,同时在研究新材料的摩擦特性及磨损相关性提供了一定的理论依据。

引用

页码：114 / 119

页数：6

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