摘要
针对在混响声场发动机辐射噪声识别困难的问题,提出用统计能量分析法对船艇机舱发动机进行噪声源分析。建立了机舱发动机噪声源识别模型,计算了发动机各表面的辐射声功率大小及频率特性。应用表面振动测量法对机舱发动机各表面辐射噪声进行识别,其结果与统计能量分析法的对比表明:统计能量分析法考虑声场的反射和叠加,能更好地识别复杂声场环境下发动机辐射噪声。
In order to recognize engine radiated noise in reverberant sound environments, a new method based on Statistical Energy Analysis is put forward. The noise recognition model of compartment engine is set up, and the engine radiated noise levels and features are calculated and analyzed. The radiated noise features of various engine compartments are also investigated by using surface vibration measurement. Compared with two methods, statistical energy analysis is a valid method to recognize noise source in reve...
出处
《装甲兵工程学院学报》
2010年第1期29-33,共5页
Journal of Academy of Armored Force Engineering
基金
军队科研计划项目
关键词
船艇机舱
发动机
噪声源
统计能量分析法
表面振动速度测量
ship compartment
engine
noise source
statistical energy analysis
surface vibration measurement
