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Wave Propagation in Small-curvature Cables with Elastic Supports

文献类型：期刊论文

作者Pan, Like3; Li LJ(李丽君)1,2; Xing, Tong3; Wu, Han1,2; Yuan, Yuan3; Zhao, Yinxin3; Ceng XH(曾晓辉)1,2
刊名JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES
出版日期2025-06-01
卷号13期号:5页码:19
关键词Wave propagation Small-curvature cables Elastic supports Wave eigenvalues Wave dispersion Cut-off frequency
ISSN号2523-3920
DOI10.1007/s42417-025-01893-8
通讯作者Li, Lijun(lilijun@imech.ac.cn) ; Xing, Tong(xingtong2001@126.com) ; Zeng, Xiaohui(zxh@imech.ac.cn)
英文摘要PurposeThe aim of this study is to clarify the effect of elastic supports and curvature of cables on wave eigenvalues and propagation characteristics.MethodsThe Hamilton principle for conservative systems was applied. An analytical coupled wave model was presented to describe responses in a cable with small curvature and elastic supports. Free wave propagation parameters were first investigated. A field test was conducted using non-contact measurement methods and its results compared to the theoretical wave velocity. Additionally, the cable free response was solved by the Fourier transform in the spatial domain.ResultsThe analytical wave velocities of a catenary considering droppers were close to experimental data. Curvature not only gave rise to cut-off frequencies but also produced both fast and slow moving longitudinal waves. The elastic supports affected the wave propagation in cables in the following three ways. Firstly, they generated the cut-off transverse wave frequencies and broadened the longitudinal wave stopbands. Secondly, they caused wave dispersion at low frequencies. The phase velocity will be higher than the group velocity and the two velocities will vary with frequency at low frequencies. Finally, they added weak wave attenuation to the system, contributing to the continuous attenuation of the wave crest and the oscillatory decay of the trailing edge.ConclusionResults confirmed the important role of curvature and elastic supports on the cable wave eigenvalues and propagation characteristics.
分类号二类
WOS关键词SPEED RAILWAY CATENARY ; FREE-VIBRATIONS ; PANTOGRAPH ; SYSTEM ; WIRE ; PERFORMANCE ; SIMULATION ; MOTION ; FORCE ; MODES
资助项目Research of China Academy of Railway Sciences Corporation Limited[2023YJ269] ; Science and Technology Research Project of China Railway Co. Ltd.[J2023J010] ; National Natural Science Foundation of China[12372051] ; National Natural Science Foundation of China[11672306] ; National Key Research and Development Program of China[2022YFB4201500]
WOS研究方向Engineering ; Mechanics
语种英语
WOS记录号WOS:001499207500001
资助机构Research of China Academy of Railway Sciences Corporation Limited ; Science and Technology Research Project of China Railway Co. Ltd. ; National Natural Science Foundation of China ; National Key Research and Development Program of China
其他责任者李丽君，Xing, Tong，曾晓辉
源URL[http://dspace.imech.ac.cn/handle/311007/101730]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China;
3.China Acad Railway Sci Corp Ltd, Stand & Metrol Res Inst, Beijing 100015, Peoples R China;
推荐引用方式
GB/T 7714		 Pan, Like,Li LJ,Xing, Tong,et al. Wave Propagation in Small-curvature Cables with Elastic Supports[J]. JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES,2025,13(5):19.
APA Pan, Like.,李丽君.,Xing, Tong.,Wu, Han.,Yuan, Yuan.,...&曾晓辉.(2025).Wave Propagation in Small-curvature Cables with Elastic Supports.JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES,13(5),19.
MLA Pan, Like,et al."Wave Propagation in Small-curvature Cables with Elastic Supports".JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES 13.5(2025):19.

入库方式： OAI收割

来源：力学研究所

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