摘要
在轨道循环交变应力作用下地铁车体易产生疲劳损伤。依据《BS EN12663:2010铁道应用——轨道车身的结构要求》,完成车体满载工况下的强度校核;利用SImpack软件建立车体多体动力学模型,获得枕梁处的载荷-时间历程;利用雨流计数法获得了循环载荷谱,根据Miner损伤理论对车体疲劳寿命进行分析。结果表明:A型地铁的强度与疲劳寿命均满足设计要求。
The subway car body is prone to fatigue damage under the action of cyclic strain.According to“BS EN12663:2010 Railway Application-Structural Requirements of Rail Body”,the strength check of the vehicle body under full load condition is completed;the multi-body dynamic model of the vehicle body is established by SImpack software,and the course of the bolster load-time is obtained,then,the rain flow counting method is used to obtain the cyclic load spectrum,and the fatigue life of the vehicle body is analyzed according to the Miner damage theory.The results show that the strength and fatigue life of the A-type subway meet the design requirements.
作者
钱凯杰
王亚平
QIAN Kaijie;WANG Yaping(College of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)
出处
《机械制造与自动化》
2020年第6期98-100,共3页
Machine Building & Automation
基金
国家重点研发计划项目(2017YFB1201201)。
关键词
地铁车体
强度校核
多体动力学建模
载荷谱
疲劳寿命
subway car body
strength check
multibody dynamic modeling
load spectrum
fatigue life
