A new method for solving problems about impeding structure-borne sound transmission from a special dynamic vibration absorber

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (10) : 218-224.

LIN Yongshui1,2 WU Weiguo1 GAN Jin1

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Abstract

The control of structure-borne sound transmission is a key problem to be solved in acoustic design of marine structure. Dynamic vibration absorber is one of very important wave blocking techniques and has good frequency selectivity, which is widely used in naval ships. A fine theoretical model and wave dynamic response matrix method is put out to investigate the problem of impeding structure-borne sound transmission from dynamic vibration absorber. Firstly, the structure is discreted into many wave guide elements and wave resistance elements and a general wave dynamic response equilibrium equation of the junction is developed. Then, the wave dynamic response matrices of wave guide elements and the added wave dynamic response matrices of wave resistance elements are deduced. The vibration amplitudes of wave elements are obtained by resolving the equilibrium equation and the transmission efficiency and transmission loss are then obtained. The method is illustrated by a series of wave attenuation models with different design parameters. The numerical computation results show that the wave transmission loss of the specific frequency domain will be greatly improved. The research work provides a new analysis method for the acoustic design of dynamic vibration absorber, which has great theoretical significance and is of important value for practical engineering in noise and vibration reduction on board.

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structure-borne sound / transmission loss / wave analysis / dynamic vibration absorber

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LIN Yongshui1,2 WU Weiguo1 GAN Jin1. A new method for solving problems about impeding structure-borne sound transmission from a special dynamic vibration absorber[J]. Journal of Vibration and Shock, 2016, 35(10): 218-224

References

[1] Cremer L, Heckl M, Ungar E E. Structure-borne Sound, Third edition[M]. Berlin: Springer-Verlag, 2005.
[2] 阿.斯.尼基福罗夫. 船舶结构声学设计[M]. 北京：国防工业出版社，1998.
Nikiforov A C. Acoustic design of ship hull structure[M]. Beijing: National Defense Industry Press, 1998.
[3] DYLEJKO P G. Optimum resonance changer for submerged vessel signature reduction[D]. Australia, University of New South Wales, 2007．
[4] 李俊，金咸定，王宏. 减小船体艉部振动的动力吸振器研
究[J]. 中国造船，2001, 23(2): 99 -101．
LI Jun, JIN Xian-ding, WANG Hong. Research on dynamic absorber for reducing vibration of ship stern[J]. Shipbuilding of China, 2001, 23(2): 99-101.
[5] 李俊，金咸定. 动力吸振器的宽带数值优化设计[J]. 振动与冲击, 2001, 20(2): 18-20.
LI Jun, JIN Xian-ding. Numerical optimal design for broadband dynamic absorber[J]. Journal of Vibration and Shock, 2001, 20(2): 18 -20.
[6] 杨志荣，秦春云等. 船舶推进轴系纵振动力吸振器设计及参数影响规律研究[J]. 振动与冲击, 2012, 31(16): 48-52.
YANG Zhi-rong, QIN Chun-yun, et al. Design and analysis of a dynamic absorber for reducing axial vibration of ship shafting[J]. Journal of Vibration and Shock, 2012, 31(16): 48-52.
[7] 韩彬. 基于动力吸振器的结构声传递抑制[D]. 武汉：华中科技大学，2006.
Han Bin. Impediment to structure-borne sound propagation using vibration absorbers[D]. Wuhan: Huazhong University of Science and Technology, 2006.
[8] 车驰东. 动力设备结构声传递的理论分析及阻波技术的研究[D]. 上海：上海交通大学，2008.
Che Chi-dong. Theoretical analysis on transmission and attenuation of structure-borne sound generated by power machineries[D]. Shanghai: Shanghai Jiaotong University, 2008.
[9] Kessissoglou N.J. Power transmission in L-shaped plates including flexural and in-plane vibration[J]. Journal of the Acoustical Society of America, 2004, 115(3): 1157-1169.
[10] 李军强，刘宏昭，王忠民. 线性粘弹性本构方程及其动力学应用研究综述[J]. 振动与冲击, 2005, 24(2): 116-123.
Lin Jun-qiang, Liu Hong-zhao, Wang Zhong-ming. Review on the linear constitutive equation and its dynamics application to viscoelastic materials[J].Journal of Vibration and Shock, 2005, 24(2): 116-123.