盘式制动器模态及热衰退机理分析  

Model and Thermal Decay Mechanism Analysis of Disc Brake

作　　者：王鑫泽 党舒晴 路永婕 WANG Xinze;DANG Shuqing;LU Yongjie(School of Mechanical Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structural Mechanics and System Safety Jointly Established by the Province and the Ministry,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学机械工程学院,河北石家庄050043 [2]省部共建交通工程结构力学行为与系统安全国家重点实验室,河北石家庄050043

出　　处：《汽车实用技术》2024年第9期107-112,共6页Automobile Applied Technology

基　　金：河北省自然基金面上项目智能车辆极端工况下的瞬态动力学控制(A2020210039)。

摘　　要：热衰退是影响制动器稳定性的重要因素。运用ABAQUS/Explicit建立制动盘热-力耦合有限元模型分析热衰退机理,对制动盘与摩擦片进行有约束模态分析。仿真与研究表明,在模态分析中制动器边缘振动更加显著,振型多为轴向弯曲;振动恶化盘-片接触导致应力与温度梯度大、分布不均现象;实际制动工况下摩擦系数数值波动大。Thermal decay is an important factor affecting brake stability.The finite element model of thermal and mechanical coupling of brake disc is established with ABAQUS/Explicit to analyze thermal decay mechanism,and constrained modal analysis of brake disc and friction disc is carried out.Simulation and research show that the vibration of the brake edge is more obvious and mode of vibration is mostly axial bending in modal analysis.The vibration deteriorates the disk-plate contact resulting in large and uneven distribution of stress and temperature gradient.Value of friction coefficient fluctuates greatly under actual braking.

关 键 词：盘式制动器 制动性能 模态分析 摩擦系数 热衰退 

分 类 号：U463.51[机械工程—车辆工程]