摘要
为研究列车碰撞过程中车钩缓冲装置的阻抗力对列车碰撞能量吸收的影响,建立了列车纵向碰撞的动力学模型。以最大平均加速度、最大瞬时加速度、车体最大塑性变形量为优化目标,以车钩的阻抗力为优化参数,通过NSGA-Ⅱ算法得到了最优解集合,随后建立针对优化目标的综合评价体系并选取最优解。优化后列车的碰撞加速度相较优化前有所减小的原因是车辆两端界面力差值较小。
In order to study the effects of impedance forces of couplings on energy absorption in train crash,a dynamics model of train longitudinal crash was established.Taking maximum average acceleration,maximum instantaneous acceleration,and maximum plastic deformation of car body as optimization objectives,while taking the impedance forces of different couplings as optimization parameters,optimal solution set was obtained by NSGA-Ⅱalgorithm.And then,a comprehensive evaluation system for the optimization objectives was established,and the optimal solution was selected.Crash acceleration of the train after optimization is less than that of train before optimization,which is due to the smaller interfacial force difference between two ends of the vehicles.
作者
吕天一
肖守讷
朱涛
张敬科
王小瑞
李玉如
阳光武
杨冰
LYU Tianyi;XIAO Shoune;ZHU Tao;ZHANG Jingke;WANG Xiaorui;LI Yuru;YANG Guangwu;YANG Bing(State Key Laboratory of Traction Power of Southwest Jiaotong University,Chengdu,610031)
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2021年第18期2262-2267,共6页
China Mechanical Engineering
基金
国家自然科学基金(52172409)
牵引动力国家实验室自主课题(2019TPL_T13)。
关键词
碰撞能量管理
进化算法
列车动力学
车钩缓冲装置
crash energy management
evolutionary algorithm
train dynamics
coupler and draft gear
