摘要
针对地铁车特点进行不锈钢地铁车被动安全设计时难点之一是其端部吸能结构的耐撞性设计。本文依据地铁车体耐撞性设计理念,在车体端部结构中设计整体承载式专用吸能结构。建立头车及中间车车体有限元模型,进行编组列车的碰撞数值仿真。研究结果表明:整体承载式专用吸能结构在撞击过程中发生稳定有序的塑性变形,冲击能量的47%转化为专用吸能结构的塑性变形,表明该车的耐撞性符合设计理念。
The crashworthiness design of end energy- absorbing structure is a key of passive safety design for stainless steel subway.Based on the crashworthiness design concept of subway vehicle,the design of whole- load type dedicated absorbing structure in the end structure of vehicle was introduced. Numerical simulation of block trains collision is conducted by the finite element model of frontal and middle car- body. During the process of impacting,stable and ordered plastic deformation occurs on the whole- load type dedicated absorbing structure. 47% of impacting energy dissipates due to the plastic deformation of the dedicated absorbing structure. Results show that the car- body conform the crashworthiness design concept.
出处
《长春师范大学学报》
2015年第2期40-42,共3页
Journal of Changchun Normal University
关键词
地铁车辆
被动安全
吸能结构
数值仿真
subway vehicle
passive safety
absorbing structure
numerical simulation
