接触网覆冰脱冰动力响应的有限元仿真  

Finite element simulation of dynamic response of the catenary icing and de-icing

作　　者：李默[1] 郭蕾[1] 关金发[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《铁道科学与工程学报》2015年第3期643-649,共7页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(51307142);中央高校基本科研业务费专项资金资助项目(SWJTU2682014CX020)

摘　　要：基于外加载荷源的机械冲击对接触网覆冰的影响,建立简单链形悬挂接触网的静力学模型,并在此基础上得到接触网-覆冰模型。对接触网-覆冰模型进行动力学分析,通过模态、谐响应、瞬时动力响应分析得到覆冰时的接触网固有频率;最佳除冰载荷频率范围应远大于1.5 Hz;并通过改变外加载荷方式确定最佳除冰载荷方式。将方法推广于一般覆冰条件,结合不同载荷作用点、载荷频率、载荷增加方式等综合分析,使除冰效果最佳。The influence of mechanical impact of extra loading source on catenary was researched in this paper. At first,the static model of catenary simple chain suspension was built,based on which the catenary icing model was obtained.Then dynamics analysis was carried out for the model,and the inherent frequency of catenary un-der icing condition was calculated though modal analysis,harmonic response analysis and transient dynamics a-nalysis.Best loading frequency scope of de -icing was supposed to be much higher than 1.5 kHz.The best loading method was obtained by changing the way the loading increases.Finally,the method was applied to ob-taining the best de -icing solution under general icing conditions by comprehensively considering different load-ing points,the frequency of loading and the way the loading increases.

关 键 词：接触网 覆冰 动力学分析 机械除冰 

分 类 号：TM714[电气工程—电力系统及自动化]