United States Department of Transportation
i
Analysis of Vibrations in a Structure due to Passing Trains Using a Coupled Finite Element and Multibody Dynamics Model
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2020-08-29
[PDF-3.44 MB]
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Alternative Title:Coupled Multibody and Finite Element Analysis of Rail Substructure Behavior [Project title from cover]
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Edition:Final Report
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Abstract:Ground-borne vibrations in structures due to passing trains are an ongoing issue in the rail industry. While in extreme cases such vibrations can lead to structural fatigue and failure, occupant comfort is usually the controlling factor. With the advent of higher-speed rail as well as the increasing value of urban real estate near train tracks, accurately predicting these vibrations becomes increasingly important. In this paper, the authors examine a coupled finite element and multibody dynamics approach to quantifying vibrations. Finite element software is used to generate the complex geometry and modes shapes which are fed into the multibody code, which simulates the passing train in the time domain. Reconstruction of the results from the mode shapes in the finite element software allows the authors to quantify accelerations in the building and other relevant quantities. An example problem is used to verify the approach.
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Content Notes:The final report for NURail project: NURail2017-UIC-R16 consists of two distinct documents related to the project titled: “Coupled Multibody and Finite Element Analysis of Rail Substructure Behavior.” This document appears on pp 2-32 of the final report. This document was sponsored by the U.S. Department of Transportation, University Transportation Centers Program. Cover date: September 2, 2020.
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