摘要
为了研究不同制动工况下的车轮热负荷,通过ANSYS建立地铁车轮三维有限元模型,以热流密度和对流换热系数作为边界条件,对比分析高磨合成闸瓦和中磷铸铁闸瓦以不同制动初速度和不同制动减速度进行制动时对车轮热负荷的影响。同时根据地铁实际运营特点,提出降低车轮制动热负荷的方案,并通过模拟地铁实际运行过程中电制动和空气制动混合制动工况,验证方案可行性。
In order to study the thermal load of wheels under different braking conditions,a three-dimensional finite element model of subway wheels was established through ANSYS,and the heat flux density and convective heat transfer coefficient were used as boundary conditions to analyze the effects of high-wear synthetic brake shoes and medium-phosphorus cast iron brake shoes on the thermal load of wheels,when braking at different initial braking speeds and different braking decelerations.At the same time,according to the actual operating characteristics of the subway,a scheme to reduce the thermal load of wheel braking is proposed;and the feasibility of the scheme is verified by simulating the mixed braking conditions of electric and air braking during the actual operation of the subway.
作者
李洪晓
孙培文
郝润之
贾一君
朱爱华
LI Hongxiao;SUN Peiwen;HAO Runzhi;JIA Yijun;ZHU Aihua(School of Mechanical-Electronic and Vehicle Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044;Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicles,Beijing University of Civil Engineering and Architecture,Beijing 100044;Hantram Co.,Ltd.,Zhejiang Hangzhou 310003)
出处
《北京建筑大学学报》
2021年第3期77-85,共9页
Journal of Beijing University of Civil Engineering and Architecture
基金
国家自然科学基金资助项目(51975038)。
关键词
地铁车轮
闸瓦制动
热负荷
有限元分析
subway wheel
shoe brake
thermal load
finite element analysis
