瞿航,陈宁
QU Hang,CHEN Ning

• 1:国网浙江省电力公司宁波供电公司

摘要(Abstract)：

球面与平面接触是电触头中最常见的接触形式之一,其接触电阻的计算和分析是电触头设计过程中重点关注的。通过对工程粗糙表面进行分析,引入球面与平面接触的粗糙表面力学模型,结合经典的电接触理论,从而首次建立了球面与粗糙平面的电接触模型。并对模型进行了详细分析,定量研究了压力、塑性指数以及表面粗糙度等因素对接触电阻的影响。设计了接触电阻测量装置,对接触电阻的影响因素进行了实验测试,并对比分析理论模型计算数据和实验数据。结果表明,压力较小时,理论模型计算的接触电阻和实验数据测试较为吻合;压力较大时,理论模型有一定的局限性。
Spherical-flat surface contact is one of the most common electric contacts. Calculation and analysis of the contact resistance are the key focus in electric contact design. By analyzing the rough surface, the paper introduces a mechanical model of spherical-flat surface contact and establishes the first contact resistance model of the spherical-flat surface on the basis of the classic electric contact theory; in addition, it analyzes the model and the impact of the load, plasticity index and the influence of surface roughness on the contact resistance. A contact resistance measurement unit is designed, and the influencing factors on contact resistance are tested. In the final, the calculation data and experiment data of the theory model are compared and analyzed.The result shows that when the contact load is small, the calculated contact resistance of the theory model is coincident with the experiment data; when the contact load is high, the theory model has its limitations.

关键词(KeyWords)： 粗糙表面;接触电阻;实验测试
rough surface;contact resistance;experimental measurement

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 瞿航,陈宁
QU Hang,CHEN Ning

DOI: 10.19585/j.zjdl.2016.12.008

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