摘要
在分析了摩擦热、接触欧姆热及热传导特性的基础上,通过将摩擦热、接触欧姆热生成速率加载于接触部位,建立了一种枢/轨相对运动条件下热分析的仿真模型,计算了在不同接触电阻值和速度条件下接触界面的温度分布情况,得到了接触界面不同部位温度随时间的变化规律,讨论了温升与接触电阻、相对速率的关系,分析认为:界面温升受界面生热率、枢/轨相对运动速率共同影响;接触电阻欧姆热是引起界面温升的主要影响因素,对轨道炮滑动电接触研究有一定参考价值。
Based on the analysis of friction heat , contact ohm heat and thermal conduct characters , a thermal analysis simulation model in which the authors load the friction heat and the contact ohm heat generation rate on the contact interface is established in consideration of the relative velocity of the arma-ture-rail in this paper .Temperature distribution near the contact interface is analyzed under the condi-tions of different resistance and relative sliding velocity .The temperature changing regularity of different parts of contact pair varies with time is analyzed , and the relationship of temperature rise and contact re-sistance , relative sliding velocity is discussed .It is thought that the temperature rise near the contact in-terface is influenced by the heat generation rate and the relative velocity of the armature-rail, and the contact ohm heat is the main factor resulting in the temperature rise near the contact interface , which has a certain reference value for the electrical sliding contact research of railguns .
出处
《装甲兵工程学院学报》
2016年第4期62-67,共6页
Journal of Academy of Armored Force Engineering
关键词
滑动电接触
温度分布
接触电阻
摩擦热
electrical sliding contact
temperature distribution
contact resistance
friction
