期刊
MATHEMATICS
卷 10, 期 13, 页码 -出版社
MDPI
DOI: 10.3390/math10132286
关键词
continuous wavelet transform; empirical mode decomposition; finite element method; frequency analysis; hunting phenomenon; mechanical modelling; rail vibrations
类别
资金
- Consejo Nacional de Ciencia y Tecnologia, CONACyT [2018-000068-02NACF]
This work analyzes the vibration response of a finite element model with hunting-induced loads and finds that different load characteristics have an impact on the rail.
Hunting is a potentially dangerous phenomenon related to the lateral oscillation of the wheels that impacts the rails and causes the wear of the infrastructure's components. Therefore, the analysis and timely detection of hunting can lead to the application of corrective maintenance tasks, reducing damages, and costs and even derailments as a result. In this work, the vibration response of a finite element model of a rail with hunting-induced loads by a single wheel is analyzed in three directions: longitudinal, lateral, and vertical. The contact patch forces are calculated by means of Simpack((R)) using the Kalker linear theory and the contact Hertz theory. The system is solved by using the Newmark-beta approach. The results of the deflection and vibration analysis, following the proposed methodology, show how the different characteristics of the loads impact the rail.
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