| Autor: |
Nijhof, M.J.J., Eerden, F.J.M. van der |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
20th International Congress on Sound and Vibration 2013, ICSV20, 7-11 July 2013, Bangkok, Thailand |
| Popis: |
National legislation enforces a limit on the Sound Levels of outdoor military shooting ranges observed in nearby residential areas. These restrictions directly influence the number of shots that may be fired at a specific shooting range, which may conflict with the required/ scheduled training capacity for that specific range. If desired, sound reduction measures can be used to decrease sound exposure levels, thus increasing the training capacity available at that specific range. To support the department of Defence in the acoustic design of new shooting ranges and modifications to existing shooting ranges, a model to predict the sound levels produced by shooting ranges has been developed. A hybrid model was developed to capture the complicated sound field resulting from the interaction of a strongly directional sound source with a complex shooting range geometry. The hybrid model consists of three coupled models: a source model representing the directivity pattern and frequency characteristics for a given weapon, a finite element model describing the interaction of the emitted sound waves with the shooting range structure (including absorbing materials), and a Helmholtz-Kirchhoff Integral based model describing the propagation of sound into the far field (including the effect of ground reflections). The coupled model is experimentally validated and a parameter study investigating the effects of ground and sound absorption parameters is carried out. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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