Effect of coupled vibration modes of dual-strip pan head on pantograph-catenary interaction

IF 3.8 2区工程技术 Q1 ENGINEERING, MECHANICAL

Acta Mechanica Sinica Pub Date : 2024-09-05 DOI:10.1007/s10409-024-24164-x

Haochen Zhang (, ), Xianghong Xu (, ), Mengzhen Wu (, ), Rui Zhou (, )

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Abstract

The consistency of the dynamic behavior of the mechanical equivalent model of high-speed pantographs with that of actual high-speed pantographs under service conditions is crucial for the correctness and accuracy of the numerical simulation results of the pantograph-catenary interaction. Firstly, based on experimental data and the finite element method, models of a mass-point frame and reduced pan head were established, which can simulate the rolling and pitching motion characteristics of the dual-strip pan head. The correctness of the finite element numerical simulation of the pantograph-catenary system based on the model was verified through an industry standard and line tests. Then, the variation law of the standard deviation of the contact force (SDCF) in the speed range of 240–450 km/h was studied, and the mechanism of large fluctuation in SDCF was explained from the perspective of pantograph-catenary resonance. Finally, the influence of pan head degree of freedom and low-pass filtering frequency of the contact force time-domain signal on SDCF was studied, and the applicable speed level of the traditional three-mass model and 20 Hz filtering were provided.

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双条盘头的耦合振动模式对受电弓与轨道相互作用的影响

高速受电弓机械等效模型的动态行为与实际高速受电弓在服役条件下的动态行为是否一致，对于受电弓-盘头相互作用数值模拟结果的正确性和准确性至关重要。首先，基于实验数据和有限元方法，建立了质点框架和缩小盘头模型，可以模拟双条盘头的滚动和俯仰运动特性。通过工业标准和线路试验，验证了基于该模型的受电弓-盘头系统有限元数值模拟的正确性。然后，研究了 240-450 km/h 速度范围内接触力标准偏差（SDCF）的变化规律，并从受电弓-悬挂系统共振的角度解释了 SDCF 大幅度波动的机理。最后，研究了接触力时域信号的盘头自由度和低通滤波频率对 SDCF 的影响，并给出了传统三质量模型和 20 Hz 滤波的适用速度水平。

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来源期刊

Acta Mechanica Sinica 物理-工程：机械

CiteScore

5.60

自引率

20.00%

发文量

1807

审稿时长

4 months

期刊介绍： Acta Mechanica Sinica, sponsored by the Chinese Society of Theoretical and Applied Mechanics, promotes scientific exchanges and collaboration among Chinese scientists in China and abroad. It features high quality, original papers in all aspects of mechanics and mechanical sciences. Not only does the journal explore the classical subdivisions of theoretical and applied mechanics such as solid and fluid mechanics, it also explores recently emerging areas such as biomechanics and nanomechanics. In addition, the journal investigates analytical, computational, and experimental progresses in all areas of mechanics. Lastly, it encourages research in interdisciplinary subjects, serving as a bridge between mechanics and other branches of engineering and the sciences. In addition to research papers, Acta Mechanica Sinica publishes reviews, notes, experimental techniques, scientific events, and other special topics of interest. Related subjects » Classical Continuum Physics - Computational Intelligence and Complexity - Mechanics