Experimental investigations on the damping effect due to passengers on flexural vibrations of railway vehicle carbody and basic studies on the mimicry of the effect with simple substitutions
| Autor: | Ken-ichiro Aida, Takahiro Tomioka, Tadao Takigami |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry Flexible tanks Mechanical Engineering 020302 automobile design & engineering 02 engineering and technology Structural engineering Vibration Vehicle dynamics 020303 mechanical engineering & transports 0203 mechanical engineering Flexural strength Automotive Engineering Fluid dynamics Flexural vibration Safety Risk Reliability and Quality business Reduction (mathematics) |
| Zdroj: | Vehicle System Dynamics. 55:995-1011 |
| ISSN: | 1744-5159 0042-3114 |
| DOI: | 10.1080/00423114.2017.1294698 |
| Popis: | The effect of passengers on a railway vehicle is usually considered as additional mass in designing a carbody. However, previous studies by means of stationary excitation tests or running tests using actual vehicles indicate that passengers behave not as mass but as damping. In this paper, the authors examined the passengers' damping effect under controlled excitation conditions on a roller rig through a series of excitation tests using a commuter-type vehicle. Large and multi-modal reductions of flexural vibrations of the carbody were observed when passengers existed. Influences of the number of passengers, distributions and postures of passengers were investigated. The authors also tried to mimic the damping effect by passengers using flexible tanks filled with fluids. Three kinds of fluids which have different viscosities have been tested. As a result of the excitation tests, good vibration reduction effects were observed by applying those tanks, and it has been found that the flexible tanks fi... |
| Databáze: | OpenAIRE |
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