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
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
复制标题
乘客对铁道车辆车体弯曲振动阻尼效应的实验研究及简单替换模拟效应的基础研究
DOI：
10.1080/00423114.2017.1294698
复制
发表时间：
2017
影响因子：
3.6
通讯作者：
K. Aida
中科院分区：
文献类型：
--
作者：
T. Tomioka;T. Takigami;K. Aida
摘要在车体设计中，乘客对车辆的影响通常被视为附加质量。然而，以往的研究通过静态激励试验或实际车辆的运行试验表明，乘客的行为不是作为质量，而是作为阻尼。本文通过一系列通勤型车辆的激振试验，研究了在可控激振条件下，乘客在滚柱试验台上的阻尼效应。当有乘客存在时，车体的弯曲振动有较大的多模态衰减。研究了乘客数量、分布和乘客姿势对乘客行为的影响。作者还试图模拟乘客使用充满液体的柔性油箱的阻尼效果。对三种不同粘度的流体进行了实验。激振试验结果表明，柔性贮液箱具有良好的减振效果，其减振效果（包括多模态减振）与车体乘员质量相近的情况相当，甚至更好;粘性差异对减振效果影响不大。根据这些测量结果，已经证明了以简单、经济和环境友好的方式实现有效的阻尼装置以抵抗代表乘客阻尼效果的铁路车辆车体的弯曲振动的可能性。
ABSTRACT 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 filled with fluids bring about vibration reduction effect (including multi-modal reduction) which is equal to or rather better than the case of similar mass of passengers in the carbody; the difference of viscosity gave little affect on the damping abilities. From these measurement results, a possibility of realising effective damping devices against flexural vibrations of railway vehicle carbodies representing passengers damping effect, in a simple, economical and environmental friendly way, has been demonstrated.
开发利用振动监测了解钢轨波浪磨损进展的系统
DOI：
--
发表时间：
2020
期刊：
影响因子：
--
作者：
田中博文;梶原和博;神野響一;川西直;蘇迪;長山智則
通讯作者：
長山智則