利用三维侧翻模拟研究钢轨初始表面裂纹可能引起的深蹲生长

IF 1.7 4区工程技术 Q3 ENGINEERING, CIVIL

Proceedings of the Institution of Mechanical Engineers Part F-Journal of Rail and Rapid Transit Pub Date : 2023-04-29 DOI:10.1177/09544097231171742

T. J. Gschwandl, T. Antretter, D. Künstner, S. Scheriau, W. Daves

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引用次数: 1

摘要

深蹲是铁路中较为复杂的失效机制，对世界各地的铁路运营商来说都是一个挑战，因此需要通过有限元分析对深蹲进行详细的研究，以确定其产生和传播机制。在这项工作中，一个循环三维(3D)有限元模型的轮轨接触包括一个初始便士形缺陷被使用。这项工作提出了实施启动便士型裂纹在轨道轮轨模拟利用子模型策略。此外，还提出了可行的评价方案。在未来，这种设置将有助于评估多个裂纹位置和可能的深蹲生长机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Investigation of probable squat growth from initial surface cracks in rails using a three-dimensional rollover simulation

Squats are rather complex failure mechanisms in rails and challenge railway operators all over the world, thus calling for a detailed investigation of squats by means of finite element analysis to locate the initiation and propagating mechanisms. In this work, a cyclic three-dimensional (3D) finite element model of a wheel-rail contact including an initial penny-shaped defect is used. This work presents the implementation of the starting penny-shaped crack in the rail for a wheel-rail simulation by utilising a submodel strategy. Moreover, viable evaluation options are shown. In the future, this set-up will help to assess multiple crack positions and possible squat growth mechanisms.

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来源期刊

Proceedings of the Institution of Mechanical Engineers Part F-Journal of Rail and Rapid Transit 工程技术-工程：机械

CiteScore

4.80

自引率

10.00%

发文量

审稿时长

7 months

期刊介绍： The Journal of Rail and Rapid Transit is devoted to engineering in its widest interpretation applicable to rail and rapid transit. The Journal aims to promote sharing of technical knowledge, ideas and experience between engineers and researchers working in the railway field.