摘要
北京地铁1号线车辆采用新型受流器,其受流靴在实际运用中出现了过早失效断裂的现象。分析了受流靴断裂的原因,提出了城市轨道交通车辆关键部件疲劳可靠性评估及改进方法并应用于实际结构。基于损伤一致性原则,将实际线路测试的受流靴动应力数据变为Ansys能识别的载荷加载到原结构,计算受流靴原结构疲劳寿命,计算结果与实际运用寿命一致。在此基础上,采用优化算法,提出了结构改进方案。新结构方案可解决受流靴因疲劳而提前失效的问题。
A fatigue reliability method for evaluating and im- proving the key parts on railway vehicles is introduced, which has been applied in real vehicle structure. Vehicles of Beijing metro Line 1 has employed a new-type current collector, but the contact shoes often broke in operation. The dynamic stress data gained from the actual lines have been tested and conver- ted to load spectra, which can be recognized by ANSYS based on damage consistency rule, then the fatigue life of the contact shoe structure is calculated, the result is consistent with the practical operation life. Based on this method, an improvement plan for the structure of key parts is developed through optimi- zing the algorithms.
出处
《城市轨道交通研究》
北大核心
2013年第7期60-62,66,共4页
Urban Mass Transit
基金
北京市交通行业科技项目(12CNIC03-8002/05)
关键词
地铁车辆
受流器
疲劳可靠性
subway vehicles
current collector
fatigue reli-ability
