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首页> 外文期刊>American Journal of Traffic and Transportation Engineering >Dynamic Analysis of Cantilever Structure for Catenary System
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Dynamic Analysis of Cantilever Structure for Catenary System

机译：脉链系统悬臂结构的动态分析

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摘要

Structural dynamics analysis is widely used in the fields of civil engineering, automobile manufacturing industry, Aerospace industry, and construction machinery. It is rarely applied in the railway transportation industry, especially the catenary arm structure. In this paper, a dynamic analysis of the cantilever structure is carried out, and the natural frequency of the cantilever structure is obtained. Through research, the frequency range that can cause the resonance of the cantilever structure is found and compared with the structural vibration frequency caused by the external load in the actual working condition. For this purpose, a finite element model of cantilever structure was created based on engineering practice. Static analysis was done by using finite element method to test the model's strength and stiffness. Then a dynamic model was made and modal analysis was done in order to get the first ten natural frequencies and corresponding modes. Resonance frequency was got by taking harmonic response analysis under the influence of external load. After all of these, a conclusion was made and the overall structure of the resonance phenomenon will not occur in actual situation which coincides with engineering actuality. It provides theoretical support for engineering practice. And also provides a theoretical basis for the follow-up structural anti-loose research.
机译：结构动力学分析广泛应用于土木工程，汽车制造业，航空航天工业和工程机械领域。它很少适用于铁路运输业，特别是围网结构。本文采用了悬臂结构的动态分析，获得悬臂结构的固有频率。通过研究，发现可能导致悬臂结构谐振的频率范围，并与由实际工作条件中的外部负载引起的结构振动频率进行比较。为此，基于工程实践创建了悬臂结构的有限元模型。通过使用有限元方法来测试模型的强度和刚度来完成静态分析。然后进行动态模型，并进行模态分析以获得前十个自然频率和相应模式。通过在外部负荷的影响下采取谐波响应分析来获得共振频率。在所有这些之后，制定了一个结论，并且在与工程现实相一致的实际情况下不会发生共振现象的整体结构。它为工程实践提供了理论支持。并为后续结构抗松散研究提供了理论依据。

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