紧固系统性能的不确定性对轮轨动力的影响

IF 1.4 4区工程技术 Q3 ENGINEERING, CIVIL

Latin American Journal of Solids and Structures Pub Date : 2021-06-18 DOI:10.1590/1679-78256537

J. Sadeghi, Mohammad Seyedkazemi, A. Khajehdezfuly

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引用次数: 4

摘要

摘要本文研究了扣件系统性能不确定度对轮轨动力的影响。为此，使用有限元方法开发了两个车辆/轨道相互作用的确定性和认识性模型。通过将模型结果与现场试验结果进行比较，表明了模型结果的有效性。通过概率分析和灵敏度分析，得出了在不同轴重、车速、轨道不平顺和各种轨道维护条件下，紧固系统性能的不确定性对WRDF的影响。利用获得的结果，开发了一些等高线，以获得WRDF的放大（由于紧固系统特性的不确定性），作为车辆轴重、车辆速度和轨道维护条件的函数。

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Effect of uncertainty of fastening systems properties on wheel/rail dynamic force

Abstract In this paper, effect of uncertainty of fastening system properties on the wheel/rail dynamic force (WRDF) was investigated. For this purpose, two deterministic and epistemic models of vehicle/track interaction were developed, using the finite element method. Validity of the results obtained from the models was shown through comparison between the model results and those obtained from field tests. The effects of uncertainty of fastening system properties on the WRDF in different axle loads, vehicle speeds, rail irregularities and various track maintenance conditions were derived through probability and sensitivity analyses. Using the results obtained, some contours were developed to obtain the amplification of WRDF (due the uncertainty of fastening system properties) as a function of vehicle axle load, vehicle speed and track maintenance conditions.

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来源期刊

Latin American Journal of Solids and Structures 工程技术-工程：机械

CiteScore

2.80

自引率

8.30%

发文量

审稿时长

>12 weeks