摘要
盘式制动器在制动过程中涉及到接触应力场、摩擦温度场以及盘体转动角速度和能量等的急剧变化。对列车制动器进行曲面构型设计,并改进制动器结构使它适用于碳陶摩擦材料。基于直接热力耦合的有限元方法,对比平面和曲面两种制动器结构的仿真结果,得到二者在相同工况下的温度场分布、接触应力分布以及角速度和能量的时间历程曲线。结果表明:曲面盘式制动器的制动效率明显高于平面制动器,但其温度场和接触应力分布状态不是十分理想。
During the braking process of disc brake,the contact stress field,friction temperature field,disc rotation angular velocity and energy change rapidly.The curved surface configuration of train brake was designed,and the brake structure was improved to make it suitable for carbon-ceramic friction material.Based on the direct thermal mechanical coupling finite element method,the simulation results of plane and curved surface brake structures were compared,and the temperature field distribution,contact stress distribution,angular velocity and energy time history curves of the two brake structures under the same working conditions were obtained.The results show that the braking efficiency of disc brake with curved surface is obviously higher than that of plane brake,but the distribution of temperature field and contact stress of the disc brake with curved surface is not good.
作者
韩召
于祥云
窦德龙
王延忠
HAN Zhao;YU Xiangyun;DOU Delong;WANG Yanzhong(School of Electrical and Information Engineering,Liaoning Institute of Science and Technology,Benxi Liaoning 117004,China;School of Mechanical Engineering and Automation,Beijing University of Aeronautics and Astronautics,Beijing 100191,China)
出处
《机床与液压》
北大核心
2022年第13期137-142,共6页
Machine Tool & Hydraulics
基金
国家自然科学基金联合基金项目(U1937603)
国家重点研发计划(2019YFB2004400)
辽宁省教育厅2021年度科学研究经费项目(面上项目)(LJKZ1077)。
关键词
盘式制动器
曲面造型
碳陶摩擦材料
热力耦合
有限元方法
Disc brake
Surface modeling
Carbon-ceramic friction material
Thermo-mechanical coupled
Finite element method
