金属带式无级变速器带轮变形摩擦损失分析  

Analysis of Friction Loss Induced by Pulley Deformation of Metal Belt CVT

作　　者：戴兴梦 胡玉梅[2] 余媛媛 何造 李孟飞 DAI Xingmeng;HU Yumei;YU Yuanyuan;HE Zao;LI Mengfei(School of Mechanical Engineering,Chongqing University,Chongqing 400044,China;State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学机械工程学院,重庆400044 [2]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《机械科学与技术》2021年第6期846-852,共7页Mechanical Science and Technology for Aerospace Engineering

摘　　要：金属带式无级变速器(CVT)的带轮变形会导致金属带沿着带轮锥面发生径向偏移,从而使得系统产生摩擦损失,严重影响变速机构的传动效率。以某国产CVT为研究对象,建立了带轮变形摩擦损失模型并利用ANSYS软件对金属带式无级变速器传动部分进行有限元仿真分析。分析结果表明:速比是影响带轮变形的主要因素,带轮锥面最大变形量随着工作半径减小而逐渐减小。同时,从摩擦损失模型可以看出发生在带轮工作半径上的最大变形量是影响摩擦损失的主要因素,带轮摩擦损失在传动比较大或较小时达到最大值,并且随着输入转矩的增加摩擦损失也随之而增加。The pulley deformation of metal belt continuously variable transmission(CVT)causes the metal belt to shift radially along the cone surface of the pulley,thereby causing friction losses in the system and seriously affecting the transmission efficiency of the transmission mechanism.In this paper,a domestic CVT is taken as the research object,a model for metal belt deformation friction loss is established and the ANSYS finite element software was used to simulate and analyze the transmission part of the metal belt continuously variable transmission.The analysis results show that the speed ratio is the main factor affecting the pulley deformation.As the working radius decreases gradually,the maximum deformation of the tapered surface of the pulley decreases.At the same time,it can be seen from the friction loss model that the maximum deformation amount occurring on the working radius of the pulley is the main factor affecting the friction loss.The friction loss of the pulley reaches its maximum when the transmission is relatively large or small.And as the input torque increases,the friction loss also increases.

关 键 词：金属带式无级变速器 带轮变形 摩擦损失 

分 类 号：TG156[金属学及工艺—热处理]