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覆冰接触网的有限元仿真及其小比例模型试验

, PP. 185-192

Keywords: 接触网,覆冰,ANSYS,小比例模型,模型试验

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Abstract:

为了为接触网覆冰的在线监测提供理论基础,对覆冰后接触网的静态响应进行研究。首先,利用ANSYS建立6跨张力自动补偿的简单链型悬挂接触网的有限元模型,对不同覆冰厚度时的接触网的静态响应进行仿真分析,得到随覆冰厚度的变化的接触线和承力索的弛度变化以及下锚处位移。然后,基于相似理论建立1/50的6跨接触网小比例模型。通过模型试验得到不同厚度下接触线和承力索的下锚处位移,对比小比例模型的仿真和试验结果验证了小比例模型的可用性。将模型试验结果推广到实际接触网,对比推广后的试验结果和实际接触网的仿真结果,进一步验证了小比例模型的正确性。该小比例模型可为深入研究接触网特性试验提供试验基础。

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