高速铁路列车制动盘散热筋布置间距研究
鄢艳丽1顾海浩1田春2翟耕慰2
Research on Brake Disk Heat Dissipation Rib Arrangement Spacing for High-speed Railway Train
YAN Yanli1GU Haihao1TIAN Chun2ZHAI Gengwei2
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作者信息:1.中车南京浦镇车辆有限公司， 210031， 南京
2.同济大学铁道与城市轨道交通研究院， 201804， 上海
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Affiliation:1.CRRC Nanjing Puzhen Vehicle Co., Ltd., 210031, Nanjing, China
2.Institute of Rail Transit, Tongji University, 201804, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.04.019
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中图分类号/CLCN:U260.331+9：U238
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栏目/Col:研究报告
摘要:
［目的］当列车设计速度达到400 km/h等级后，车下流场环境会更加复杂，使得制动盘阻力、功率消耗加剧问题更加凸显，需要对该速度等级下列车制动盘散热筋的最优布置间距进行深入研究。［方法］基于圆柱型散热筋结构，通过有限元仿真手段建立模型，并输入了相关参数值。针对相邻两周散热筋的圆心距d周向设置了四个计算工况，针对相邻两周间的距离d径向设置了五个计算工况，分别计算不同d周向、d径向对制动盘温升、阻力及散热功率的影响，进而得到d周向及d径向的建议取值。［结果及结论］d径向=40 mm（即散热筋与制动盘边缘的距离同制动盘直径之比为0.75）时，制动盘温升达到最低值，制动盘的性能较优；散热筋直径为d周向的一半时，制动盘综合性能最优。
Abstracts:
［Objective］ As the design speed of trains reaches 400 km/h level, the flow field environment under the train becomes more complex, highlighting the issues such as increased brake disc resistance and power consumption. It is imperative to conduct in-depth research on the optimal arrangement spacing of train brake disc heat dissipation ribs at this speed level. ［Method］ Using a cylindrical heat dissipation rib structure as the basis, a model is established through finite element simulation, inputting relevant parameter values. Four calculation conditions are set for the center-to-center distance (dc) circumferentially between adjacent heat dissipation ribs, and five calculation conditions are set radially for the distance (dr) between adjacent heat dissipation ribs. Various dc and dr values are calculated respectively for their impact on brake disc temperature rise, resistance, and heat dissipation power. It is aimed to determine recommended values for both dc and dr. ［Result & Conclusion］ When dr equals 40 mm (i.e. the ratio of the distance between the heat dissipation ribs and the brake disc edge to the brake disc diameter is 0.75), the brake disc temperature rise reaches the lowest value, indicating the optimal performance of brake disc. For heat dissipation ribs with a diameter equal to half of dc, the brake disc demonstrates the best overall performance.
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