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| Research on prediction and control of interior noise in railway passenger-car |
| Received:August 08, 2008 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20093009 |
| KeyWord:passenger train acoustic-structure coupling FEM／BEM acoustic contribution |
| Author | Institution |
| 谢素明 |
大连交通大学 交通运输工程学院,大连 |
| 张磊 |
大连交通大学 交通运输工程学院,大连 |
| 付亚兰 |
大连交通大学 交通运输工程学院,大连 |
| 兆文忠 |
大连交通大学 交通运输工程学院,大连 |
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| Abstract: |
| In order to improve interior acoustic quality of railway passenger-car, research on prediction and control of low-frequency noise inside the passenger-car is performed based on FEM and BEM. A passenger-car model is set up, giving consideration to structure-acoustic coupling characteristic of the car. The mode analysis and harmonic analysis under 0 Hz~200 Hz for the car structure model, air cavity model and acoustic-structure coupling model are carried on, respectively. Then, the acoustic field distribution at low frequency inside the car is analyzed, and acoustic contribution coefficient of car-body panel at focused frequencies are studied to identify the main structure-borne noise sources. Hereby the approach in this paper can be used to provide theoretical data for structure acoustic design at low-frequency. |
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