| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Outline of Final Research Achievements |
A vibration reduction method is proposed for railway tracks. For this purpose, the introduction of disturbance into the sleeper spacing is proposed. The optimal sleeper spacing which can suppress the pinned-pinned resonance is obtained by means of the design sensitivity analysis. Through numerical experiments, the influence of the sleeper distribution on the dynamic reaction of railway tracks is investigated. It is found that, although the randomness in a real track can contribute to the vibration reduction, the best performance is attained by the employment of the optimal arrangement. The wheel/track interaction analysis proves that the optimal track can also contribute to the noise reduction.
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