Experimental Study on Natural Vibration Characteristics of Double-Strip High-Speed Pantograph Head

doi:10.1007/s11340-023-00968-5

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Experimental Study on Natural Vibration Characteristics of Double-Strip High-Speed Pantograph Head
	Xu, X ; Zhang, H ; Wei, X ; Wu, M ; Zhang, Z ; Ye, Z ; Wu, R ; Huang, S
刊名	EXPERIMENTAL MECHANICS
	2023-05
关键词	Pantograph Modal characteristics Working height Boundary constraint
ISSN号	0014-4851
DOI	10.1007/s11340-023-00968-5
英文摘要	BackgroundPantograph-catenary resonance is one of the main causes of the increased vibration amplitudes of the pantograph-catenary system. Experimental identification of the modal characteristics of the complex mechanics of the pantograph can provide basis for determining whether the pantograph-catenary resonance occurs or not and for modeling pantograph dynamics.ObjectiveThe typical service conditions of the pantograph were simulated, and the modal characteristics of pantograph under different service conditions were identified experimentally.MethodsModal tests of the DSA380 pantograph were conducted at two working heights of pantograph and three boundary constraints of the pantograph head, and the effects of working heights and boundary constraints on the modal parameters of the pantograph head were studied.ResultsThe natural frequencies and modal shapes of the DSA380 pantograph head in the frequency range of 200 Hz were identified, including coupling vibration modes associated with the bow spring at 30.35 Hz and below, and elastic modes associated with the elastic deformation of the strip at 34.81 Hz and above.ConclusionsThe high-order elastic modes of the strip are related to the material and structural parameters, and has almost nothing to do with the working height of the pantograph and the boundary constraints of the pantograph head, thus only one service condition is needed for future testing. However, the low frequency coupled vibration mode is greatly affected by the operating height and boundary constraints, so it is necessary to conduct modal experiments in specific service conditions.
分类号	二类
WOS研究方向	WOS:000993906600001
语种	英语
资助机构	National Natural Science Foundation of China [11672297]
其他责任者	Xu, X
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92210]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.(Wu R., Huang S.) Beijing CRRC CED Railway Elect Tech Co Ltd Beijing 100176 Peoples R China 2.(Zhang H.) Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 3.(Xu X., Zhang H., Wei X., Wu M., Zhang Z., Ye Z.) Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Xu, X,Zhang, H,Wei, X,et al. Experimental Study on Natural Vibration Characteristics of Double-Strip High-Speed Pantograph Head[J]. EXPERIMENTAL MECHANICS,2023.
APA	Xu, X.,Zhang, H.,Wei, X.,Wu, M.,Zhang, Z.,...&Huang, S.(2023).Experimental Study on Natural Vibration Characteristics of Double-Strip High-Speed Pantograph Head.EXPERIMENTAL MECHANICS.
MLA	Xu, X,et al."Experimental Study on Natural Vibration Characteristics of Double-Strip High-Speed Pantograph Head".EXPERIMENTAL MECHANICS (2023).