加筋板的声压贡献量分析与设计优化
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- 英文论文题名：Stiffened plate sound press contribution analysis and optimization
- 论文作者：陈侯京 ; 刘志忠
- 英文论文作者：CHEN Hou-jing ; LIU Zhi-zhong ; China China Ship Development and Design Centre
- 年：2016
- 作者机构：中国舰船研究设计中心;
- 论文关键词：加筋板 ; 声传递向量 ; 声压贡献量 ; 结构声优化
- 英文论文关键词：cylindrical shell ; sound radiation ; free surface ; acoustic boundary element method ; virtual mass method
- 会议召开时间：2016-09-17
- 会议录名称：2016年度声学技术学术会议论文集
- 语种：中文
- 分类号：U661.44;U674.702
- 学会代码：SXJS
- 会议名称：2016年度声学技术学术会议
- 会议地点：中国湖北武汉
- 主办单位：船舶振动噪声重点实验室、湖北省声学学会
- 学会名称：《声学技术》编辑部
- 页数：7
- 文件大小：1035k
- 原文格式：D
- 会议级别：全国
摘要
基于结构振动辐射噪声理论模型提出无量纲声辐射S面声压贡献量(DLSSPC)概念,结合声传递向量(ATV)统一S面、模态、路径三种坐标下的声压贡献量并推出DLSSPC快速计算公式。基于FEM/IBEM仿真自由非均匀加筋板在20Hz~150Hz低频段的振动传函和S面ATV;在半消声室激振物理模型同步采集激励力、S面10×12个均布点振动、场点声压,根据测试频域振动和声压研究仿真ATV的物理精度。基于仿真ATV和快速计算公式,使用仿真和测试S面振动传函分别计算DLSSPC,识别加筋板的三种贡献量区域,并讨论两次计算分析结果差异与原因。总结变更主贡献量区域结构影响场点声压的规律,指导加筋板结构声优化。
Based on vibration structure vibration radiated noise theory model, the paper presented the concept of dimensionless sound pressure contribution(DLSSPC), pulled S-face sound press contribution fast calculation formula and unified the acoustic pressure contribution of three coordinates(geometry, mode and transfer path) using acoustic transfer vector(ATV). Structure vibration transfer function and S-face ATV of the numerical stiffened plate model were simulated based on FEM/IBEM in the low frequency band of 20Hz~150Hz. Excitation force, vibration of 120 points uniform distributed on S-face and field point sound press of the physical stiffened plate model were simultaneous sampled in hemi-anechoic chamber. The physical accuracy of the simulation ATV was confirmed using S-face vibration and field point sound press test value. Based on simulation ATV and fast calculation formula, two kinds of DLSSPC were calculated using the simulation and test of S surface vibration transfer function, and contribution areas of the stiffened plate were identified further. The difference and its mechanism of two kinds of DLSSPC were discussed. The relationship between the main contribution area structure and field point sound pressure was summarized, which could aid stiffened plate structure sound optimization.
Based on vibration structure vibration radiated noise theory model, the paper presented the concept of dimensionless sound pressure contribution(DLSSPC), pulled S-face sound press contribution fast calculation formula and unified the acoustic pressure contribution of three coordinates(geometry, mode and transfer path) using acoustic transfer vector(ATV). Structure vibration transfer function and S-face ATV of the numerical stiffened plate model were simulated based on FEM/IBEM in the low frequency band of 20Hz~150Hz. Excitation force, vibration of 120 points uniform distributed on S-face and field point sound press of the physical stiffened plate model were simultaneous sampled in hemi-anechoic chamber. The physical accuracy of the simulation ATV was confirmed using S-face vibration and field point sound press test value. Based on simulation ATV and fast calculation formula, two kinds of DLSSPC were calculated using the simulation and test of S surface vibration transfer function, and contribution areas of the stiffened plate were identified further. The difference and its mechanism of two kinds of DLSSPC were discussed. The relationship between the main contribution area structure and field point sound pressure was summarized, which could aid stiffened plate structure sound optimization.
引文
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[2]吴文伟,冷文浩,沈顺根.具有等间距相同加强筋板的声辐射[J].中国造船,1999,40(3):72-81.Wu Wenwei,Leng Wenhao,et al.,Sonud radiation of plate with equidistant reinforced ribs[J].Shipbuilding of China,1990,146(3):72-81.
[3]魏强,朱英富,张国良.阻尼处理加筋板的振动响应及其声辐射[J].中国造船,2005,46(2):35-41.Wei Q,Zhu Y.F.,Zhang G.L.,The vibration response and sound radiation of multi-direction stiffened plate with damped treatment[J].Shipbuilding of China,2005,169(2):35-42.
[4]黄其柏.工程噪声控制学[M].华中理工大学出版社,1998:101-105.Huang Qibai,Noise control in engineering[M].Central China University of Science and Technology Press,1998:101-105.
[5]冯国平,黄修长,华宏星等.基于振动功率流的船艉传递路径分析[J].噪声与振动控制,2010,30(2):5-9.FENG Guoping,HUANG Xiuchang,et al.,Analysis of transmission paths of ship stern vibration based on power flow theory[J].Noise and Vibration Control,2010,30(2):5-8.
[6]张继明.浮筏隔振系统噪声源分离方法研究[D].中国舰船研究设计中心硕士学位论文,2012:3-12.Zhang Jiming.Noise source separation Method research in Floating raft isolation system[D].China China Ship Development and Design Centre Master Dissertation,2012:3-12.
[7]Zhang Y K,Lee M R,Stanecki P J,et al.Vehicle noise and weight reduction using panel acoustic contribution analysis[C].SAE Paper951338.1995:2411-2421.
[8]王二兵,周鋐,徐刚.基于车身板件声学贡献分析的声振优化[J].江苏大学学报:自然科学版.2012,6(1):25-29.Wang ER-bing,Zhou Hong,et al.,Acoustic-vibration optimization based on panel acoustic contribution analysis of vehicle body[J].Journal of Jiangsu University:Natural Science Edition,2012,33(1):25-19.
[9]解建坤,王东方,苏小平.基于ATV/MATV技术的车内低频噪声分析[J].噪声与振动控制,2013,33(4):145-149.XIE Jiankun,WANG Dongfang,et al.,Analysis of Low-frequency Interior Noise of Vehicles Based on ATV and MATV Techniques[J].Noise and Vibration Control,2013,33(4):145-149.
[10]张磊,郝志勇.基于结构-声耦合法的汽车镁质仪表板声贡献度分析及结构改进[J].振动与冲击,2013,32(13):176-181.ZHANG Lei,HAO Zhiyong,et al.,Sound contribution analysis and structural modification for a magnesium dash with struture-sound interaction method[J].JOURNAL OF VIBRATION and SHOCK,2013,32(13):176-181.
[11]高飞.城市轨道交通高架结构振动与噪声影响的研究[D].北京交通大学博士学位论文,2011:91-93.Gao Fei.Study on Vibration and Noise Influence of Elevated Structures in Urban Rail Transit[D].Beijing Jiaotong Universi ty Ph.D.Dissertation,2011:91-93.