| Autor: |
Hao Jun Fan, Shi Ke Hou, Bao Guo Yu, Hui Ding, Yong Zhong Zhang, Song Bai |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Applied Mechanics and Materials. 535:581-585 |
| ISSN: |
1662-7482 |
| DOI: |
10.4028/www.scientific.net/amm.535.581 |
| Popis: |
Based on the theory of multi-body system dynamics, the analytical method of finite element and boundary element, the finite element model of vehicle body, the rigid-flexible coupled model of vehicle and the acoustic boundary element model of carriage were established by applying a variety of simulation software. Road roughness was simulated and the SPL of field point in carriage under the excitation was computed at the frequency range of 20-150Hz. Considering the size and the positive /negative nature of panels acoustic contribution at SPL peak of field point, damping treatments were taken on different combinations of panels to decrease multiple field points SPL peak and the optimal treatment was finally confirmed. The results showed that noise reduction measures can generally decrease the SPL peak around the crew. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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