交通运输工程与信息学报2018，Vol.16Issue(2)：80-85,6.DOI:10.3969/j.issn.1672-4747.2018.02.013
车钩间隙对重载列车纵向冲击动力学的影响
Effects of Coupler Slack on the Longitudinal Impulse of Heavy Haul Train
摘要
Abstract
Based on the theory of train longitudinal dynamics, the influence of coupler slack on the longitudinal impulse of heavy-haul train is investigated, including the size of coupler slack, the number of large slack coupler, and the distribution pattern of coupler slack. Results indicate that during the braking process, the maximum coupler force would be lowered by smaller coupler slack. The difference of maximum coupler force is 52.14kN between the 0.01m and 0.018m coupler slack when the initial speed is 60 km-h-1. The maximum coupler force significantly increases as the number of large slack coupler increases. The maximum coupler force is 799.14kN and 938.18kN when the numbers of large slack coupler are 10 and 100-the latter one is 17.4％ higher than the former one. Among the 5 types of coupler slack distribution patterns, the smallest maximum coupler force is observed when the coupler slack is convex distributed. Therefore, it is recommended to use small slack coupler and convex distribution to reduce the longitudinal impulse.关键词
重载列车/纵向动力学/制动过程/车钩间隙/最大车钩力Key words
heavy-haul train/longitudinal dynamics/braking process/coupler slack/maximum coupler force分类
交通工程引用本文复制引用
杨敏,王开云,纪天成..车钩间隙对重载列车纵向冲击动力学的影响[J].交通运输工程与信息学报,2018,16(2):80-85,6.基金项目
国家自然科学基金项目(51478399 ),国家重点研发计划(2017YFB1201300 ),国家重点实验室开放课题(2017ZJKF07 ) （51478399 ）
