The Proceedings of the Symposium on Environmental Engineering
Online ISSN : 2424-2969
2017.27
Session ID : 104
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Study of analysis method of interior noise in railway cars by means of ray tracing method
*Takashi YOSHIZAWAToshihiko MOCHIDA
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

We have studied the analysis method of interior noise in railway cars by means of ray tracing method. By using a point source as an input which simulates the speaker test, the analysis result of sound decay along the longitudinal direction of the car didn't always match the measurement result. It is possibly because the wave character of the sound cannot be strictly simulated by the ray tracing method. On the other hand, in simulation for the running condition by applying multiple sources of which amplitude were estimated from the measured vibration of the interior panels, the tendency of the sound change by the difference of interior condition matched well between the analysis and the measurement.

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© 2017 The Japan Society of Mechanical Engineers
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