高传递损失基座阻抗优化设计法
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摘要
提出基于阻抗优化的高传递损失基座设计法,定义高传递损失的量化关系。该方法基于阻抗级和阻抗级落差描述基座的减振效果,通过阻抗综合优化设计获得高传递损失基座。以某水面舰船为例,采用有限元方法对舰船舱段内的基座进行频响分析,通过单点激振单点拾振、单点激振多点拾振的阻抗计算实例,验证了利用阻抗级来描述舰船基座减振效果的可行性。基于Isight平台的近似代理模型优化方法,对基座系统中方钢不同拓扑布局进行了分析,以方钢布置尺寸为设计变量实现了多因子阻振优化设计。高传递损失基座的阻抗优化设计方法可为工程中基座减振设计提供参考。
The design method for base structures with high transmission loss based on the impedance optimization was studied, and the quantitative relationship about high transmission loss was defined. By introducing the concept of impedance magnitude, a method describing the damping effect of base structures was proposed based on the impedance magnitude level, and the design method for base structures with high transmission loss was put forward through the impedance integrated optimization. Taking a surface vessel as a computational example, the vibration response characters of the base structure of its hold frame were analysed by using the FEM software, in which the technique of single point excitation and multi points responses was adopted to compute the impedances. By the example, it was validated that describing the damping effect of base structures of ships by using the concept of impedance magnitude level is feasible. By virtue of the approximation agent model optimization method in the Isight, platform, the topological lay-out of square stell elements in different locations on the pedestal frame system was investigated, where the square steel parameters were taken as design variables to realize the multi-factor composite resistance vibration optimization design. A set of impedance optimization design methods for high transmission loss base structures were proposed, which provides pratical engineering ways to improve the vibration reduction performance of base structures.
The design method for base structures with high transmission loss based on the impedance optimization was studied, and the quantitative relationship about high transmission loss was defined. By introducing the concept of impedance magnitude, a method describing the damping effect of base structures was proposed based on the impedance magnitude level, and the design method for base structures with high transmission loss was put forward through the impedance integrated optimization. Taking a surface vessel as a computational example, the vibration response characters of the base structure of its hold frame were analysed by using the FEM software, in which the technique of single point excitation and multi points responses was adopted to compute the impedances. By the example, it was validated that describing the damping effect of base structures of ships by using the concept of impedance magnitude level is feasible. By virtue of the approximation agent model optimization method in the Isight, platform, the topological lay-out of square stell elements in different locations on the pedestal frame system was investigated, where the square steel parameters were taken as design variables to realize the multi-factor composite resistance vibration optimization design. A set of impedance optimization design methods for high transmission loss base structures were proposed, which provides pratical engineering ways to improve the vibration reduction performance of base structures.
引文
[1]熊琳.试验基座阻抗对隔振装置隔振效果的影响[J].柴油机,2007,29(4):39-41.XIONG Lin.The influence of test base impedance on vibration isolation effect[J].Diesel Engine,2007,29(4):39-41.
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[5]孙建刚,邹明松,刘艳敏.船舶基座机械阻抗特性及简化数值建模方法[C]∥第十四届船舶水下噪声会议.无锡:中国船舶科学研究中心,2013.
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[8]毛亮,梅志远,罗忠,等.夹芯复合材料基座结构设计与强度分析[J].海军工程大学学报,2008,20(1):98-102.MAO Liang,MEI Zhiyuan,LUO Zhong,et al.Structure design and strength analysis of foundation structure of sandwich composite[J].Journal of Naval University of Engineering,2008,20(1):98-102.
[9]周海波,计方.典型船舶悬臂基座阻抗特性研究[J].船舶,2013,24(5):11-16.ZHOU Haibo,JI Fang.Research on impedance characteristics of cantilever base for typical ship[J].Ship&Boat,2013,24(5):11-16.
[10]GOYDER H G D,WHITE R G.Vibrational power flow from machines into built-up structures,Part I:introduction and approximate analyses of beam and plate-like foundations[J].Journal of Sound and Vibration,1980,68(1):59-75.
[11]王小龙,李玉东.圆筒型复合材料基座减振设计变量分析[J].广东造船,2013(5):80-83.WANG Xiaolong,LI Yudong.Damping design variables analysis of the cylindrical composite materials foundation structure[J].Guangdong Shipbuilding,2013(5):80-83.
[12]PRADHAN P K,MANDAL A,BAIDYA D K,et al.Dynamic response of machine foundation on layered soil:cone model versus experiments[J].Geotechnical and Geological Engineering,2008,26(4):453-468.
[13]MADHAV M R,JAWAID S.Behavioul of composite rigid caisson foundation[J].Geotechnical Engineering,2008,39(2):105-111.
[14]左鹤声.机械阻抗方法与应用[M].北京:机械工业出版社,1987.
[15]张令弥.机械阻抗方法在振动分析中的应用Ⅱ机械阻抗的基本概念[J].机械强度,1980(2):7-15.ZHANG Lingmi.The application of mechanical impedance method in vibration analysisⅡBasic concept of mechanical impedance[J].Journal of Mechanical Strength,1980(2):7-15.
[16]盛美萍,王敏庆,邢文华,等.单层隔振系统中弹性基座的振动与声辐射特性[J].机械科学与技术,2000,19(增刊1):94-96.SHENG Meiping,WANG Minqing,XING Wenhua,et al.Vibration and structure-borne sound of supporting structures in machine vibration isolating systems[J].Mechanical Science and Technology,2000,19(Sup1):94-96.
[17]余林波,黄其柏,张永波,等.双层浮筏隔振系统筏体结构与隔振特性的研究[J].噪声与振动控制,2007,27(4):102-102.YU Linbo,HUANG Qibai,ZHNAG Yongbo,et al.Research on raft structure and isolation characteristics of double-decked floating raft isolation system[J]Noise and Vibration Control,2007,27(4):102-102.
[18]张华良,瞿祖清,傅志方.浮筏隔振系统各主要参数对系统隔振性能的影响[J].振动与冲击,2000,19(2):5-8.ZHANG Hualiang,QU Zuqing,FU Zhifang.The effects of parameters of floating raft isolation system on its isolation characteristics[J].Journal of Vibration and Shock,2000,19(2):5-8.
[19]姚熊亮,计方.船舶阻抗失配基座对平面弯曲波传递的阻抑特性[J].船舶力学,2010,14(6):678-689.YAO Xiongliang,JI Fang.Attenuation of the flexural wave transmission through impedance mismatch hull base[J].Journal of Ship Mechanics,2010,14(6):678-689.
[20]计方,姚熊亮.舰船高传递损失基座振动波传递特性[J].工程力学,2011,28(3):240-244.JI Fang,YAO Xiongliang.The characteristics of vibration wave propagation from ship high transmission loss base structures[J].Engineering Mechanics,2011,28(3):240-244.
[21]李江涛.复合结构基座减振特性的理论与实验研究[D].上海:上海交通大学,2010.
[22]刘见华,金咸定,李喆.多个阻振质量阻抑结构声的传递[J].上海交通大学学报,2003,37(8):1205-1208.LIU Jianhua,JIN Xianding,LI Zhe.Impediment to structure borne propagation from several paralleling arranged vibration isolation mass[J].Journal of Shanghai Jiao Tong University,2003,37(8):1205-1208.
[2]谢志强.实船基座阻抗对泵组浮筏隔振装置性能影响分析[J].武汉理工大学学报(交通科学与工程版),2014,38(4):891-894.XIE Zhiqiang.Effect of onboard base impedance on vibration isolation efficiency of pump sets floating raft[J].Journal of Wuhan University of Technology(Transportation Science&Engineering),2014,38(4):891-894.
[3]PETERSSON B,PLUNT J.On effective mobilities in the prediction of structure-borne sound transmission between a source structure and a receiving structure,PartⅠ:theoretical background and basic experimental studies[J].Journal of Sound and Vibration,1982,82(4):517-529.
[4]PINNINGTON R J.Vibrational power transmission from a short source beam to a long finite receiver beam via a vibration isolator[C]∥Proceedings of the Third International Conference on Recent Advances in Structural Dynamics.Southampton:Institute of Sound and Vibration Research Southampton,1984.
[5]孙建刚,邹明松,刘艳敏.船舶基座机械阻抗特性及简化数值建模方法[C]∥第十四届船舶水下噪声会议.无锡:中国船舶科学研究中心,2013.
[6]庞福振,宋红宝,缪旭弘,等.阻抗分析法在船舶结构动力响应分析中的应用研究[J].振动与冲击,2016,35(18):17-22.PANG Fuzhen,SONG Hongbao,MIAO Xuhong,et al.Impedance analysis method applied in underwater acoustic radiation analysis of ships[J].Journal of Vibration and Shock,2016,35(18):17-22.
[7]吴文伟,沈荣瀛,沈顺根.设备基座输入机械阻抗工程估算方法[J].振动工程学报,2004,17(增刊2):694-697.WU Wenwei,SHEN Rongying,SHEN Shungen.An engineering approach to evaluate the input impedance of the machine foundation[J].Journal of Vibration Engineering,2004,17(Sup2):694-697.
[8]毛亮,梅志远,罗忠,等.夹芯复合材料基座结构设计与强度分析[J].海军工程大学学报,2008,20(1):98-102.MAO Liang,MEI Zhiyuan,LUO Zhong,et al.Structure design and strength analysis of foundation structure of sandwich composite[J].Journal of Naval University of Engineering,2008,20(1):98-102.
[9]周海波,计方.典型船舶悬臂基座阻抗特性研究[J].船舶,2013,24(5):11-16.ZHOU Haibo,JI Fang.Research on impedance characteristics of cantilever base for typical ship[J].Ship&Boat,2013,24(5):11-16.
[10]GOYDER H G D,WHITE R G.Vibrational power flow from machines into built-up structures,Part I:introduction and approximate analyses of beam and plate-like foundations[J].Journal of Sound and Vibration,1980,68(1):59-75.
[11]王小龙,李玉东.圆筒型复合材料基座减振设计变量分析[J].广东造船,2013(5):80-83.WANG Xiaolong,LI Yudong.Damping design variables analysis of the cylindrical composite materials foundation structure[J].Guangdong Shipbuilding,2013(5):80-83.
[12]PRADHAN P K,MANDAL A,BAIDYA D K,et al.Dynamic response of machine foundation on layered soil:cone model versus experiments[J].Geotechnical and Geological Engineering,2008,26(4):453-468.
[13]MADHAV M R,JAWAID S.Behavioul of composite rigid caisson foundation[J].Geotechnical Engineering,2008,39(2):105-111.
[14]左鹤声.机械阻抗方法与应用[M].北京:机械工业出版社,1987.
[15]张令弥.机械阻抗方法在振动分析中的应用Ⅱ机械阻抗的基本概念[J].机械强度,1980(2):7-15.ZHANG Lingmi.The application of mechanical impedance method in vibration analysisⅡBasic concept of mechanical impedance[J].Journal of Mechanical Strength,1980(2):7-15.
[16]盛美萍,王敏庆,邢文华,等.单层隔振系统中弹性基座的振动与声辐射特性[J].机械科学与技术,2000,19(增刊1):94-96.SHENG Meiping,WANG Minqing,XING Wenhua,et al.Vibration and structure-borne sound of supporting structures in machine vibration isolating systems[J].Mechanical Science and Technology,2000,19(Sup1):94-96.
[17]余林波,黄其柏,张永波,等.双层浮筏隔振系统筏体结构与隔振特性的研究[J].噪声与振动控制,2007,27(4):102-102.YU Linbo,HUANG Qibai,ZHNAG Yongbo,et al.Research on raft structure and isolation characteristics of double-decked floating raft isolation system[J]Noise and Vibration Control,2007,27(4):102-102.
[18]张华良,瞿祖清,傅志方.浮筏隔振系统各主要参数对系统隔振性能的影响[J].振动与冲击,2000,19(2):5-8.ZHANG Hualiang,QU Zuqing,FU Zhifang.The effects of parameters of floating raft isolation system on its isolation characteristics[J].Journal of Vibration and Shock,2000,19(2):5-8.
[19]姚熊亮,计方.船舶阻抗失配基座对平面弯曲波传递的阻抑特性[J].船舶力学,2010,14(6):678-689.YAO Xiongliang,JI Fang.Attenuation of the flexural wave transmission through impedance mismatch hull base[J].Journal of Ship Mechanics,2010,14(6):678-689.
[20]计方,姚熊亮.舰船高传递损失基座振动波传递特性[J].工程力学,2011,28(3):240-244.JI Fang,YAO Xiongliang.The characteristics of vibration wave propagation from ship high transmission loss base structures[J].Engineering Mechanics,2011,28(3):240-244.
[21]李江涛.复合结构基座减振特性的理论与实验研究[D].上海:上海交通大学,2010.
[22]刘见华,金咸定,李喆.多个阻振质量阻抑结构声的传递[J].上海交通大学学报,2003,37(8):1205-1208.LIU Jianhua,JIN Xianding,LI Zhe.Impediment to structure borne propagation from several paralleling arranged vibration isolation mass[J].Journal of Shanghai Jiao Tong University,2003,37(8):1205-1208.