轨道车辆大吨位组合式承载结构测力墙设计方法  

Design method of large-tonnage load cell wall with composite support structure for rail vehicles

作　　者：许平[1] 张德洪 邵恒 姚曙光[1] 

机构地区：[1]中南大学轨道交通安全教育部重点实验室,湖南长沙410075 [2]上海铁路局南京动车段,安徽合肥230001

出　　处：《铁道科学与工程学报》2017年第11期2435-2443,共9页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(51675537);国家科技支撑计划资助项目(2015BAG12B00);教育部科学技术研究资助项目(113051A)

摘　　要：耐冲击吸能列车已经成为世界各国轨道车辆被动安全防护技术的重要手段,轨道车辆碰撞试验是评估耐冲击吸能列车的重要方法。轨道车辆碰撞试验接触面大和撞击力大,现有的测力墙结构并不能满足测试需求。采用单因素法分析传感器间距d,传感器数量n和碰撞面板厚度h对整块式测力墙碰撞响应的影响,提出分块式和整块式面板组合的大吨位承载结构测力墙设计方法,并针对某地铁车端底架主吸能结构的测试要求,开展大吨位测力墙结构设计。通过台车碰撞试验,得到结构的撞击力大小及分布规律。试验与仿真结果趋势一致,相差不超过5%,满足轨道车辆碰撞试验大吨位撞击力测试的工程需要。The crashworthy car-body is an important means to solve the train passive safety protection technologyin many countries, while collision test is an important method to evaluate it. The contact areas and impact forcesin rail vehicle collision tests are too large for existing load cell walls. In this paper, the effects of the sensorspacing （d）, number of sensors （n） and faceplate thickness （h） on the load cell wall responds were evaluated, and astructure design scheme of large-tonnage load cell walls to combine independent-faceplate with holistic-faceplatewas proposed. For the test requirements of a main energy-absorbing structure of subway vehicles, the structuredesign of large-tonnage load cell wall was carried out. By the trolley crash test, the magnitude and distribution ofimpact force of structure were obtained. Compared with the simulation results, the tendencies were consistent anda difference of less than 5%. The designed structure can meet engineering needs of large-tonnage impact force testof rail vehicles collision test.

关 键 词：测力墙 碰撞响应 影响因素 有限元方法 

分 类 号：U270.1[机械工程—车辆工程]