受静压力作用加筋板隔声性能研究
|
摘要
基于随机入射平面波建立混响声场激励的加筋板隔声计算模型,通过对试验模型数值计算,二者结果基本吻合;计算存在静压力时加筋板隔声特性表明,存在静压力时加筋板基频移动会致低频隔声量显著增加,压力增加到一定程度时隔声量基本不再增加;此可为存在预应力的实际结构物隔声量计算提供参考。
Based on the concept of plane wave propagation,a model of sound transmission through stiffened plates excited by an acoustic diffuse field under static pressure was developed. Simulation results based on the model structure are very close to experiment results in the literature. Sound transmission through stiffened plates under static pressure was then investigated. The results show that static pressure may cause the base frequency of the stiffened plate to shift and lead to transmission loss at low frequencies. When the pressure increases to a certain level,the sound transmission loss is no longer increasing. The results might contribute to the literature of sound transmission computation through structures with initial stresses.
Based on the concept of plane wave propagation,a model of sound transmission through stiffened plates excited by an acoustic diffuse field under static pressure was developed. Simulation results based on the model structure are very close to experiment results in the literature. Sound transmission through stiffened plates under static pressure was then investigated. The results show that static pressure may cause the base frequency of the stiffened plate to shift and lead to transmission loss at low frequencies. When the pressure increases to a certain level,the sound transmission loss is no longer increasing. The results might contribute to the literature of sound transmission computation through structures with initial stresses.
引文
[1]Parker R G,Mote Jr C D.Tuning of the natural frequency spectrum o f air circular plate by in-plane stress[J].Journal of Sound and Vibration,1991,145(1):95-110.
[2]Zhou Q,Joseph P F.A numerical method for the calculation of dynamic response and acoustic radiation from an underwater structure[J].Journal of Sound and Vibration,2005,283(3/4/5):853-873.
[3]Ye W N,Li T Y,Zhu X.The vibro-acoustic characteristics of the cylindrical shell partially submerged in the fluid[J].Applid Mechanics and Materials,2012,170/171/172/173(5):2303-2311.
[4]Iakovlev S,Dooley G,Williston K,et al.Evolution of the reflection and focusing patterns and stress states in two-fluid cylindrical shell systems subjected to an externl shockwave[J].Journal of Sound and Vibration,2011,330(25):6254-6276.
[5]Zhou Xin-ping.Vibration and stability of ring-stiffened thin walled cylindrical shells conveying fluid[J].Acta Mechanica Solida Sinica,2012,25(2):168-176.
[6]陈炉云,李磊鑫,张裕芳.局部预应力的圆柱壳结构声辐射特性分析[J].上海交通大学学报,2014,48(8):1084-1089.CHEN Lu-yun,LI Lei-xin,ZHANG Yu-fang.Characteristics analysis of structural acoustic of cylindrical shell with prestress in local areas[J].Journal of Shanghai Jiaotong University,2014,48(8):1084-1089.
[7]Liu B,Feng L,Nilsson A C.Sound transmission through curved aircraft panels with stringer and ring frame attachments[J].Journal of Sound and Vibration,2007,300(3/4/5):949-973.
[8]黎胜,赵德有.平面声波由空气经加肋板向水中传输的数值计算研究[J].声学学报,2002,27(2):112-116.LI Sheng,ZHAO De-you.Numerical analysis of sound transmission of an incident plane wave from air to water through stiffened plates[J].Acta Acustica,2002,27(2):112-116.
[9]Campolina B,Atalla N,Dauchez N,et al.Four-pole modellingof vibration isolators:application to SEA of aircraft double-wall panels subjected to mechanical excitation[J].Noise Control Engineering Journal,2012,60(2):158-170.
[10]Liu B,Feng L,Nilsson A C.Influence of overpressure on sound transmission through curved panels[J].Journal of Sound and Vibration,2007,302(4/5):760-776.
[11]母德强,陈塑寰,冀清发.初应力对薄板动态特性影响的理论计算分析与研究[J].吉林工学院学报,1996,17(3):1-5.MU De-qiang,CHEN Su-huan,JI Qing-fa.The influence of initial stress on the vibrational behavior of thin platesa theoretical analysis and study[J].Journal of Jilin Institute of technology,1996,17(3):1-5.
[12]Rafaely B.Spatial-temporal correlation of a diffuse sound field[J].Journal of Acoustical Society of America,2000,107(6):3254-3258.
[13]Josshi P,Mulani S B,Kapania R K.Multi-objective vibroacoustic optimization of stiffened panels excited by acoustic diffuse field[C]//52nd AIAA/ASME/ASCE/AHS/ASC Structural,Structural Dynamics and Materials Conference,Denver,Colorado,2011.
[14]Schaffer H,Pucher E.Methods to simulate airborne sound transmission at railway door panels with deterministic wave[J].Journal of Materials Science and Engineering,2013,A3(11):775-791.
[15]Fahy F.Sound and structural vibration[M].New York:Academic Press,1985.
[16]Ou D Y,Mak C M,D S M.Prediction of the sound transmission loss of a stiffened window[J].Journal of Building Services Engineering Research&Technology,2012,34(4):359-368.
[17]Roskam J,Dam C V,Grosveld F.Some noise transmission loss characteristics of typical general aviation structural materials[C]//AAIA Aircraft Systems and Technology Conference,Los Angeles,1978.
[18]Takashi Y,Kanada K,Yonekawa Y,et al.A study on the relationship between subjective unpleasantness and body surface vibrations induced by high-level low frequency pure tones[J].Industrial Health,2005,43(3):580-587.
[2]Zhou Q,Joseph P F.A numerical method for the calculation of dynamic response and acoustic radiation from an underwater structure[J].Journal of Sound and Vibration,2005,283(3/4/5):853-873.
[3]Ye W N,Li T Y,Zhu X.The vibro-acoustic characteristics of the cylindrical shell partially submerged in the fluid[J].Applid Mechanics and Materials,2012,170/171/172/173(5):2303-2311.
[4]Iakovlev S,Dooley G,Williston K,et al.Evolution of the reflection and focusing patterns and stress states in two-fluid cylindrical shell systems subjected to an externl shockwave[J].Journal of Sound and Vibration,2011,330(25):6254-6276.
[5]Zhou Xin-ping.Vibration and stability of ring-stiffened thin walled cylindrical shells conveying fluid[J].Acta Mechanica Solida Sinica,2012,25(2):168-176.
[6]陈炉云,李磊鑫,张裕芳.局部预应力的圆柱壳结构声辐射特性分析[J].上海交通大学学报,2014,48(8):1084-1089.CHEN Lu-yun,LI Lei-xin,ZHANG Yu-fang.Characteristics analysis of structural acoustic of cylindrical shell with prestress in local areas[J].Journal of Shanghai Jiaotong University,2014,48(8):1084-1089.
[7]Liu B,Feng L,Nilsson A C.Sound transmission through curved aircraft panels with stringer and ring frame attachments[J].Journal of Sound and Vibration,2007,300(3/4/5):949-973.
[8]黎胜,赵德有.平面声波由空气经加肋板向水中传输的数值计算研究[J].声学学报,2002,27(2):112-116.LI Sheng,ZHAO De-you.Numerical analysis of sound transmission of an incident plane wave from air to water through stiffened plates[J].Acta Acustica,2002,27(2):112-116.
[9]Campolina B,Atalla N,Dauchez N,et al.Four-pole modellingof vibration isolators:application to SEA of aircraft double-wall panels subjected to mechanical excitation[J].Noise Control Engineering Journal,2012,60(2):158-170.
[10]Liu B,Feng L,Nilsson A C.Influence of overpressure on sound transmission through curved panels[J].Journal of Sound and Vibration,2007,302(4/5):760-776.
[11]母德强,陈塑寰,冀清发.初应力对薄板动态特性影响的理论计算分析与研究[J].吉林工学院学报,1996,17(3):1-5.MU De-qiang,CHEN Su-huan,JI Qing-fa.The influence of initial stress on the vibrational behavior of thin platesa theoretical analysis and study[J].Journal of Jilin Institute of technology,1996,17(3):1-5.
[12]Rafaely B.Spatial-temporal correlation of a diffuse sound field[J].Journal of Acoustical Society of America,2000,107(6):3254-3258.
[13]Josshi P,Mulani S B,Kapania R K.Multi-objective vibroacoustic optimization of stiffened panels excited by acoustic diffuse field[C]//52nd AIAA/ASME/ASCE/AHS/ASC Structural,Structural Dynamics and Materials Conference,Denver,Colorado,2011.
[14]Schaffer H,Pucher E.Methods to simulate airborne sound transmission at railway door panels with deterministic wave[J].Journal of Materials Science and Engineering,2013,A3(11):775-791.
[15]Fahy F.Sound and structural vibration[M].New York:Academic Press,1985.
[16]Ou D Y,Mak C M,D S M.Prediction of the sound transmission loss of a stiffened window[J].Journal of Building Services Engineering Research&Technology,2012,34(4):359-368.
[17]Roskam J,Dam C V,Grosveld F.Some noise transmission loss characteristics of typical general aviation structural materials[C]//AAIA Aircraft Systems and Technology Conference,Los Angeles,1978.
[18]Takashi Y,Kanada K,Yonekawa Y,et al.A study on the relationship between subjective unpleasantness and body surface vibrations induced by high-level low frequency pure tones[J].Industrial Health,2005,43(3):580-587.