用半解析方法研究分层轨道模型中运动力的临界速度和运动质量的不稳定性

IF 1.9 Q3 ENGINEERING, MECHANICAL Vibration Pub Date : 2023-01-26 DOI:10.3390/vibration6010009
Z. Dimitrovová
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引用次数: 1

摘要

本文对铁路轨道的分层模型进行了比较。所有分析都基于半分析方法,以显示它们的强大程度。结果以无量纲形式呈现,适用于各种可能的现实世界场景。通过轮廓积分法对各模型的支撑结构等效柔度进行反复精确计算,得到了主要结果和结论。与其他出版作品相比,新的术语和根本不同的方法强调了对该领域的科学贡献。半分析方法表明,可以容易而准确地获得预期结果。然而,由于应用此类方法必须进行简化,因此这一优势无法扩展到大量模型。事实证明,即使单层模型离现实最远,它也很容易进行分析处理,因为它具有规则和可预测的行为。另一方面,三层模型具有许多不可预测的特性,这些特性将在本文中详细介绍。
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On the Critical Velocity of Moving Force and Instability of Moving Mass in Layered Railway Track Models by Semianalytical Approaches
This article presents a comparison between layered models of a railway track. All analyses are based on semianalytical approaches to show how powerful they can be. Results are presented in dimensionless form, making them applicable to a wide range of possible real-world scenarios. The main results and conclusions are obtained using repeated exact calculations of the equivalent flexibility of supporting structure related to each model by contour integration. New terms and a fundamentally different approach with respect to other published works underline the scientific contribution to this field. Semianalytical methods demonstrate that the intended results can be obtained easily and accurately. However, this benefit cannot be extended to a large number of models due to the simplifications that must be introduced in order to apply such methods. It turns out that even though the one-layer model is the furthest away from reality, it is easy to handle analytically because it has a regular and predictable behavior. The three-layer model, on the other hand, has many unpredictable properties that will be detailed in this article.
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CiteScore
3.20
自引率
0.00%
发文量
0
审稿时长
10 weeks
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