379 在来線車輪の制振材・防音カパーによる振動・騒音低減対策

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The noise caused by vehicle wheels rolling on conventional rails is becoming an essential problem in recent years. In this report, we introduce the results of an analysis regarding the noises as reduced and executed case studies. We carried out a model simulation to predict the sound power reductions under a condition where the thickness of wheel rim was modified, and another condition where damping materials were applied onto the wheel plates. The noise caused by corrugated narrow gauge wheels is normally intense to compare with that caused by conventional wheels. As a countermeasure therefore, we manufactured a simple sound proof cover applicable to the corrugated wheels experimentally, and examined and sought the effects of vibrations and noise levels through analysis and experiments.
2009-08-03