钢绳环式无级变速器钢丝磨痕几何特征研究  

Research on Geometric Characteristics of Steel Wire Wear Scar of WR-CVT

作　　者：张武[1] 刘怡杉 吴景亮 韩飞燕 ZHANG Wu;LIU Yi-shan;WU Jing-iang;HAN Fei-yan(School of Mechanical Engineering,Xi’an University of Science and Technology,Shaanxi Xi’an 710054,China)

机构地区：[1]西安科技大学机械工程学院,陕西西安710054

出　　处：《机械设计与制造》2024年第1期36-40,共5页Machinery Design & Manufacture

基　　金：西安市科技计划项目(2019217714GXRC013CG014-GXYD13.7);陕西省重点研发计划项目一般项目(2018GY-163);西安科技大学优秀青年科技基金(2019YQ2-12)。

摘　　要：摩擦磨损分析对钢丝绳的寿命预测和可靠性理论具有关键意义。以6×7+IWS钢绳环为研究对象,利用ABAQUS软件对其内部钢丝间的微动磨损进行仿真。在接触载荷为1N和循环次数为50000的情况下,研究了交叉角度为30°、45°、60°、90°时下钢丝试样的磨痕深度、面积和体积的演变规律。仿真结果表明,在θ=30°时,磨痕深度和磨痕体积最小,分别为0.0034mm、1037.483×10^(-5)mm^(3);在θ=90°时,磨痕深度和磨痕体积最大,分别为0.0082mm、1040.831×10^(-5)mm^(3)。在相同交叉角度下,上钢丝的磨痕深度小于下钢丝的磨痕深度,上钢丝的接触面积总是大于下钢丝的接触面积。当上、下钢丝总磨痕深度达到报废标准时,30°、45°、60°和90°交叉试样所需的循环次数依次为608696、509091、466667和437500次。本研究为钢绳环在微动磨损下的磨痕几何特征和寿命预测提供了理论依据。Friction and wear analysis is of key significance to the life prediction and reliability theory of wire ropes.This paper takes 6×7+IWS steel rope loop as the research object,and utilizes ABAQUS software to simulate the fretting wear between the steel wires.Under the condition of a contact load of 1N and a number of cycles of 50,000,the evolution of the wear depth,area and volume of the steel wire specimens at the crossing angles of 30°,45°,60°,and 90°was studied.The simulation results show that,the wear scar depth and wear scar volume are the smallest atθ=30°,which are 0.0034mm and 1037.483×10^(-5)mm^(3)respec-tively;The wear scar depth and wear scar volume are the largest atθ=90°,which are 0.0082mm and 1040.831×10^(-5)mm^(3) respec-tively.Under the same cross angle,the wear scar depth of the upper wire is smaller than that of the lower wire,and the contact area of the upper wire is always greater than that of the lower wire.When the total wear scar depth of the upper and lower steel wires reaches the scrap standard,the number of cycles required for the 30°,45°,60°and 90°cross samples are 608,696,509091,466667 and 437500 in turn.This study provides a theoretical basis for the wear scar geometry and life prediction of steel rope loops under fretting wear.

关 键 词：钢丝 微动磨损 交叉角度 磨痕深度 磨痕体积 

分 类 号：TH16[机械工程—机械制造及自动化] TD532[矿业工程—矿山机电]