Engineering Mechanics

Proceedings Vol. 26 (2020)

ENGINEERING MECHANICS 2020

Copyright © 2020 Brno University of Technology Institute of Solid Mechanics, Mechatronics and Biomechanics

 

Chlebo O., Úradníček J., Žiaran S., Musil M.
pages 102 - 105, full text

The reduction of railway wagons' vibration must be taken into account during a wagon design using appropriate vibro-isolation in order to reduce the transmission of structural noise from its main source. The paper analyses the vibration transmission, procedures and vibro-acoustic conditions with a view to reducing this vibration generated between the wagon wheel, as a main source of vibro-sound energy, and the tank body when applying a suitable vibro-isolation. The modal analysis of the tank wagon was complemented by the analysis of gravitational impact of the wheel on the rail generating its vibration. The transmission of the wheel components' vibration from the wheel through the primary suspension, and the placement of the tank through the sliders and the ball joint into the tank body, is investigated. The solution is also based on the theoretical analysis and methodology of transmission of vibration energy, as well as on the measurement of vibration at the entry and exit measurement points of the main components of the wagon chassis. FFT and modal analysis were used to obtain the vibration parameters. Finally, this article aims at proposing some effective measures that may contribute to reducing the unwanted transmission of structural noise and thus decreasing both the noise emission and immission which have a negative impact on the environment and human health.

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All papers were reviewed by members of the scientific committee.