一种环链连接金具的摩擦磨损特性有限元仿真分析  

Finite Element Simulation of Abrasive Wear Characteristics for a Ring Chain Line Fitting

作　　者：曾萍 刘志刚 黄长勇 雒方旭 张华鹏 蔡新景 ZENG Ping;LIU Zhigang;HUANG Changyong;LUO Fangxu;ZHANG Huapeng;CAI Xinjing(State Grid Ji′an Power Supply Company,Ji′an 343009,China;Department of Electrical School,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]国网江西省电力有限公司吉安供电分公司,江西吉安343009 [2]沈阳工业大学电气工程学院,辽宁沈阳110870

出　　处：《湖南电力》2023年第4期90-94,共5页Hunan Electric Power

基　　金：国家电网公司科技项目(SGJXJA00XTJS2250214)。

摘　　要：处于大风垭口地区的电力金具常常发生严重磨损。为深入研究金具的磨损失效机理,采用有限元方法对一种环链连接金具磨损过程进行了仿真计算。研究结果表明,U型螺丝最大应力为692.2 MPa,远超45号钢的屈服强度355 MPa;磨损1400次后U型螺丝接触区域出现Z轴负方向应变,在X方向和Y方向均有向外发生塑性变形的趋势;U型螺丝磨损速率具有从大到小再从小到大的周而复始的变动趋势。Electric power fittings located in the strong wind area are prone to abrasive wear.In order to study abrasive wear mechanism of electric power fittings,the wear process of a ring chain line fitting is simulated based on the finite element method.It is indicated that the maximum stress of the U-shaped ring is 692.2 MPa,far exceeding the yield strength of 45#steel which is equal to 355 MPa.After 1400 times of abrasive wear,a negative strain along the Z-axis is shown on the contact area of the U-shaped ring,and plastic deformation outward in both the X and Y directions is observed.The wear rate of U-shaped ring makes a cycle that repeats itself from large to small and then from small to large.

关 键 词：线路金具 摩擦磨损 应力 应变 剩余尺寸 屈服强度 

分 类 号：TM75[电气工程—电力系统及自动化]