摘要
滑动受流条件下,滑板材料的温升是决定其摩擦磨损机制的主要因素。文章采用有限元计算与实测温升相结合的分析方法,系统研究了不同热源(包括电弧热、接触电阻热、摩擦热以及体电阻热)对各种滑板材料体温升的影响。结果表明,不同滑板材料由摩擦热引起的体温升相近且数值较小;滑板材料中金属元素所占的比例愈多,电弧热对体温升的影响愈大,而接触电阻热的影响则愈小。体电阻热的影响可忽略不计。铜基粉末冶金滑板由于富含金属元素,耐电弧性能最差,浸金属碳滑板具有良好的综合受流磨损性能。
The high temperature of the pantograph pan could affect the electric abrasion mechanism greatly. According to the results of finite element analysis and the temperature measurement of the tested pantograph pan, the effects of different heat sources caused by electric arc, contact resistance and friction were studied systematically on various pantograph pan materials. It was proved that the friction heat raised close to the temperature on different pantograph pan and the heat amount was relatively small. The more the metal elements in a pantograph pan were, the more the pantograph pan boundary heat flow arc caused. But the metal elements had an opposite function on the contact resistance. The effects of resistance of pantograph pan on rising temperature were very small and could be ignored. The Cubase sintered alloy pantograph pan with full metal elements was very poor in withstanding arc frit. The metal impregnation carbon pantograph pan possessed good general properties.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2002年第5期56-61,共6页
Journal of the China Railway Society
关键词
受电弓滑板
受流摩擦
体温升
模拟计算
有限元分析
electric contact friction and abrasion
pantograph pan
rising temperature
finite element analysis
