摘要
为了估算特殊工况下动车组枕梁的损伤,提取了部分典型测点在进出站等特殊工况下通过较小曲线与道岔的应力数据做损伤计算,之后验证了数据的有效性并采用Bootstrap方法对该工况下关键点的寿命区间进行估计.经过对比,得到典型工况对枕梁关键部位损伤的影响程度.
In order to estimate the special conditions of EMU（electric multiple units） bolster damage, stress data of some critical points during the train passing through typical operating conditions, such as small-radius curved tracks and turnouts are adopted, and the damage is calculated accordingly. The results are then validated and the fatigue life ranges of critical points are estimated by the bootstrap method. Finally, the influence of typical operating conditions on critical points of bolsters is revealed by comparative analysis.
出处
《北京交通大学学报》
CAS
CSCD
北大核心
2017年第1期74-77,84,共5页
JOURNAL OF BEIJING JIAOTONG UNIVERSITY
基金
国家重点研发计划课题(2016YFB1200403)~~
关键词
动车组
枕梁
工况
疲劳损伤
置信度
electric multiple units
bolster
service conditions
fatigue damage
confidence
