考虑触点粗糙表面特征的接触电阻仿真分析方法  

Simulation Analysis Method of Contact Resistance Considering Characteristics of Rough Contact Surfaces

作　　者：吴承创 周宇 张超[1] 任万滨[1] WU Chengchuang;ZHOU Yu;ZHANG Chao;REN Wanbin(School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001

出　　处：《电器与能效管理技术》2025年第3期6-10,共5页Electrical & Energy Management Technology

基　　金：国家自然科学基金项目(U2441286、52377140、52407166)。

摘　　要：接触电阻是低压控制电器的关键参数。首先在梳理电接触的理论模型的基础上,提出一种考虑粗糙表面特征的接触电阻仿真分析方法。然后研究接触区域特征、接触电阻与压力载荷的依赖关系。最后,与光滑表面接触电阻计算结果对比,确认接触斑点具有随压力载荷奇异性变化的特征,这也是接触电阻非线性变化的根本原因。Contact resistance is a critical parameter in low voltage control apparatus.Firstly,based on the collation of the theoretical model of electrical contact,a simulation analysis method of contact resistance considering the characteristics of rough surfaces is proposed.Then,the dependence relationships among the characteristics of the contact area,contact resistance and pressure load are explored.Finally,by comparing the results of contact resistance calculations with those for smooth surfaces,it is confirmed that the contact spots exhibit singular change with the pressure loads,which is the fundamental reason for the nonlinear change of the contact resistance.

关 键 词：触点 接触电阻 粗糙表面 有限元仿真 接触界面 

分 类 号：TM503.5[电气工程—电器]