标准地铁列车前端专用耐撞结构吸能模式及力学匹配  

Energy absorption mode and mechanical matching of crashworthiness structure aheads for standardized metro train

作　　者：羊祥云 鲁寨军[2,3] YANG Xiangyun;LU Zhaijun(Hunan Xiangtan Electric Power Co.,Ltd.,Xiangtan,Hunan 411101,China;School of Traffic&Transportation Engineering,Central South University,Changsha,Hunan 410083,China;Key Laboratory of Traffic Safety on Track,Ministry of Education,Changsha,Hunan 410083,China)

机构地区：[1]湖南湘电动力有限公司,湖南湘潭411101 [2]中南大学交通运输工程学院,湖南长沙410083 [3]轨道交通安全教育部重点实验室,湖南长沙410083

出　　处：《机车电传动》2022年第2期141-148,共8页Electric Drive for Locomotives

基　　金：国家重大技术装备攻关工程项目(系列化中国标准地铁列车研制及试验)。

摘　　要：开发轻质高比吸能的能量吸收装置是标准化地铁列车项目的核心需求,开展专用吸能装置的匹配性增强设计对结构耐撞性提升有重要意义。在不改变现有装置所占空间的前提下,根据标准化地铁列车的碰撞防护参数,设计了3种吸能元件方案,运用显式有限元分析方法,基于试验测定的部件性能参数,对比分析了3种结构在25 km/h速度条件下的冲击响应行为,并确定了最终的优选设计方案。在此基础上,运用拉丁超立方试验法构造了吸能参数响应面;采用非支配排序多目标遗传算法(NSGA-II)开展了吸能元件的多目标结构优化匹配设计,获得了优化后的结构方案,并完成了验算。结果表明,通过串联式蜂窝结构设计可改进吸能装置中长行程蜂窝的失稳问题;通过顶杆式蜂窝组合结构设计,显著提升了装置压缩过程中的吸能特性。响应面优化后的标准化地铁列车吸能装置吸能能力显著提升。Lightweight and high specific energy absorption device is the key development component of standardized subway train.It is important to enhance the matching design of special energy absorption device to improve the crashworthiness of structure.Without changing the space of existing devices,according to the collision protection parameters of standardized metro trains,three energy dissipation element schemes were designed.Based on the component performance parameters of test,the impact response behaviors of three structures were compared and analyzed by using the full-scale finite element method under the speed of 25 km/h,at last the final optimal design plan was determined.Furtherly,the response surface of energy absorption parameters was constructed by Latin hypercube method.Multi-objective structure optimization and matching design of energy absorbing element was carried out by using nondominated sorting multi-objective genetic algorithm(NSGA-II).Optimized structural was obtained and checked.The results show that the series honeycomb structure can improve the instability of long-stroke honeycomb in the energy absorption device.The ejector rod honeycomb composite structure can significantly improve the energy absorption characteristics.With the response surface optimization,the energy absorption capacity of standardized subway train energy absorption device was significantly improved.

关 键 词：标准化地铁 碰撞防护 蜂窝结构 吸能防爬装置 

分 类 号：U231[交通运输工程—道路与铁道工程] U270.2[机械工程—车辆工程]