广义质量弹簧减振器动力学特性研究
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摘要
为降低舰船设备传递到基础的振动,提出广义质量弹簧减振器。介绍该减振器的结构组成,采用结构导纳综合法对其动力学特性进行分析。为验证广义质量弹簧减振器的减振效果,以某船用滑油泵为对象,采用Adams及Ansys软件构建系统刚柔动力学混合模型,对安装减振器前后机脚加速度频、时域响应进行仿真分析。结果表明,广义质量弹簧减振器不仅能降低设备机脚特定频率的振动,亦能抑制该处中高频振动。
To reduce vibrations transferred from vessel equipment to a base,a kind of generalized mass-spring damper was proposed. Its structure was introduced,and its dynamic characteristics were analyzed with the mobility synthesis method. In order to verify the vibration reduction effect of the generalized mass-spring damper,the lubrication oil pump on a certain vessel was taken as a study object,its rigid-flexible coupled dynamic model was established,the frequency domain and time domain acceleration responses at the bottom of the pump with and without a generalized massspring damper were calculated. The results showed that the generalized mass-spring damper can not only reduce the vibration of the pump feet under a specific frequency,but also suppress middle and high frequency vibrations there.
To reduce vibrations transferred from vessel equipment to a base,a kind of generalized mass-spring damper was proposed. Its structure was introduced,and its dynamic characteristics were analyzed with the mobility synthesis method. In order to verify the vibration reduction effect of the generalized mass-spring damper,the lubrication oil pump on a certain vessel was taken as a study object,its rigid-flexible coupled dynamic model was established,the frequency domain and time domain acceleration responses at the bottom of the pump with and without a generalized massspring damper were calculated. The results showed that the generalized mass-spring damper can not only reduce the vibration of the pump feet under a specific frequency,but also suppress middle and high frequency vibrations there.
引文
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[2]AL-Bedoor B O,Moustafa K A,AL-Hussain K M.Dual dynamic absorber for the torsional vibrations of synchronous motor-driven compressors[J].Journal of Sound and Vibration,1999,220(4):729-748.
[3]吴崇健,骆东平,杨叔子,等.离散分布式动力吸振器的设计及在船舶工程中的应用[J].振动工程学报,1999,12(4):584-588.WU Chong-jian,LUO Dong-ping,YANG Shu-zi,et al.Design and application of multiple tuned mass damper for ships[J].Journal of Vibration Engineering,1999,12(4):584-588.
[4]阿.斯.尼基福洛夫,著.谢信,王轲,译.船体结构声学设计[M].北京:国防工业出版社,1998.
[5]田正东,计方.阻振质量刚性隔振在舰船基座机构中应用研究[J].船舶力学,2011,15(8):906-914.TIAN Zheng-dong,JI Fang.Applied research on rigid vibration isolation of blocking mass in hull base structure[J].Journal of Ship Mechanics,2011,15(8):906-914.
[6]Kessissoglou N J.An analytical investigation of the active attenuation of the plate flexural wave transmission through a feinforcing beam[J].J.Acoustic.Soc Am.,1997,102(6):3530-3541.
[7]Kessissoglou N J.Active attenuation of the wave transmission through an l-plate junction[J].J.Acoustic.Soc Am.,2000,110(1):267-277.
[8]王敏庆,盛美萍,孙进才.宽频带动力吸振器功率流特性研究[J].声学学报,2002,27(2):121-123.WANG Min-qing,SHENG Mei-ping,SUN Jin-cai.The characteristic of power flow in broad band dynamic vibration absorber[J].ACTA Acustica,2002,27(2):121-123.
[9]施引,朱石坚,何琳.船舶动力机械噪声及其控制[M].北京:国防工业出本社,1990.