隔声装置插入损失试验与仿真对比分析  

Comparison and Analysis of Experiment and Simulation Results of Sound Insert Loss of a Noise Insulation Device

作　　者：丁继才 漆琼芳 华如南 张苗[2] DING Jicai;QI Qiongfang;HUA Runan;ZHANG Miao(Navy Representative Office in Huludao Area,Huludao 125004,Liaoning,China;Wuhan Second Ship Design and Research Institute,Wuhan 430060,China)

机构地区：[1]海装驻葫芦岛地区军代表室,辽宁葫芦岛125004 [2]武汉第二船舶设计研究所,武汉430060

出　　处：《噪声与振动控制》2021年第6期224-228,共5页Noise and Vibration Control

摘　　要：以发声设备的声压级频谱测试值作为输入,对隔声装置插入损失进行测试及数值计算分析。在噪声试验中通过调节隔声装置内的无指向性声源频谱强度模拟隔声装置内发声设备;在进行VA One噪声数值计算时,将发声设备的声压级频谱转化为进行统计能量分析仿真时发声设备的声功率级图谱,获得统计能量输入功率。结果表明,数值计算场点声压平均值与试验中测点声压平均值差值在3 dB以内,误差满足一般工程应用需要,验证了噪声数值分析模型的有效性。此外,通过数值分析开展吸声材料层优化和吸声材料覆盖率分析,有关结论可为隔声装置声学优化设计提供有益参考。Taking the measured spectrum values of sound pressure level as the input,the insert loss of a noise insulation device was obtained by experiment and numerical simulation.In the experiment,the spectrum intensity of the nondirectional sound source in the noise insulation device was adjusted to simulate the sound equipment.While in the numerical calculation,the sound pressure level was converted into sound power spectrum of the sound equipment.Based on sound power level test standards,the statistical energy analysis parameters of numerical simulation was obtained.Comparing the sound pressure level results from VA One simulation and result by experiment,it was found that the difference was within 3 dB.The comparison shows that the error met the requirements of engineering application,and the validity of the sound simulation model was verified.In addition,absorbing material layer optimization and coverage ratio analyses were carried out by simulation.Conclusions of this study provides a useful reference for acoustic optimization design of noise insulation devices.

关 键 词：振动与波 隔声装置 统计能量分析法 VA One 插入损失 吸声材料 

分 类 号：TU112.4[建筑科学—建筑理论]