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Estimation of Vibration Limit Cycles from Wheel/Rail Mobilities for the Prediction of Curve Squeal Noise


     

文集名：Noise and Vibration Mitigation for Rail Transportation Systems - Proceedings of the 14th International Workshop on Railway Noise
作者：Olivier Chiello（Univ Gustave Eiffel, CEREMA, Univ Lyon, UMRAE）
Rita Tufano（Vibratec, Railway Business Unit）
Martin Rissmann（Vibratec, Railway Business Unit）
会议名：14th International Workshop on Railway Noise (IWRN14)
会议日期：7-9 December 2022
会议地点：Shanghai, China
出版年：2024
页码：473-482
总页数：10
馆藏号：352185
分类号：U270.1-53/I61/(14th)
关键词：Curve squeal；Instability；Self-sustained vibrations；Power balance
参考中译：
语种：eng
文摘：A novel method for the approximate estimation of curve squeal sound levels is proposed. The method directly targets the stationary regime by using wheel/rail mobilities at contact instead of modal characteristics of the structures. The condensation allows a more general description of the dynamics of the structures, in particular the behavior of the rail for which a modal representation is not very suitable. The method is first validated in the case of a reduced modal description of the system by comparing results to a reference cycle obtained by numerical integration in the time domain. It is then applied to realistic cases for which the wheel/rail mobilities are obtained from more elaborated models. The model can be used to carry out parametric studies allowing to design squeal noise mitigation solutions.