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装甲车的振动噪声控制一直是理论和工程领域不断研究的课题,其车内噪声直接影响作战人员的作战水平,进行装甲车内部噪声的研究十分必要。首先分别建立并分析了装甲车车内空腔模型以及考虑结构和空气之间相互作用的声固耦合模型,通过对比耦合前后的声学模态振型图,得出车体结构对空腔声学特性有一定的影响;然后使用边界元法对整车声固耦合模型进行声学响应分析,得到驾驶员右耳处的声压分布情况;最后对声压峰值的频率点进行板件声学贡献量分析,为改善车内的声学特性提供了参考依据。
Vibration and noise control of armored vehicles has always been the subject of continuous research in the field of theory and engineering. The noise inside the vehicle has a direct impact on the operational level of the warfighters. It is necessary to study the internal noise of armored vehicles. Firstly, the cavity model of the armored car and the acoustic-solid coupling model considering the interaction between the structure and the air are established and analyzed respectively. By comparing the acoustic mode shapes before and after the coupling, the acoustic characteristics of the car body structure are obtained Then using the boundary element method to analyze the acoustic response of the vehicle’s acoustic-mechanical coupling model to obtain the sound pressure distribution at the driver’s right ear. Finally, the acoustical contribution of plate sound pressure to the peak of the sound pressure is Improve the acoustic characteristics of the car provides a reference.