한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)
- 한국철도학회 2009년도 춘계학술대회 논문집
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- Pages.1097-1102
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- 2009
주름강판의 차음성능 향상 방안
Improvement Strategy of the Sound Insulation Performance of a Corrugated Steel Panel
- 발행 : 2009.05.21
초록
In a railway vehicle, corrugated steel panel is widely used for the floor panel because of its high bending stiffness and light weight. However, this panel shows lower sound insulation performance than that of the plate with the same weight. Especially, in a particular frequency band, transmission loss (TL) rapidly decreases and it results in the deterioration of TL of the overall floor panel. This study identifies that the remarkable drop in TL is caused from the local resonance of the periodic corrugated structure. This study shows that the frequency band of the TL drop can be controlled by the proper design of the corrugated structure. In addition, improvement effect of TL by attaching foam and glass wool is estimated by experiment. The purpose of the study is to provide the practical information for the improvement of the sound insulation performance of the corrugated steel.
키워드