Design and study on dynamic vibration absorber of fluid-conveying pipes based on the receptance method

• Main Authors: Zhang Lin, Li Huafeng, Chen Yong, Zhang Tao, Ding Yangjian
• Format: Article
• Language: English
• Published: Editorial Office of Chinese Journal of Ship Research 2019-10-01
• Series: Zhongguo Jianchuan Yanjiu
• Subjects: pipe vibration; fluid-conveying pipes; vibration reduction; Dynamic Vibration Absorber (DVA); zero assignment; receptance method
• Online Access: http://www.ship-research.com/EN/Y2019/V14/I5/138
• ISSN: 1673-3185; 1673-3185

<b>[Objectives]</b>The fluid-conveying pipes may vibrate under external excitation. In order to reduce the vibration of the fluid-conveying pipes and study the vibration-reduction characteristics of the Dynamic Vibration Absorber(DVA),<b>[Methods]</b>the receptance matrix of the multi-degree-of-freedom (DOF)system of the additional spring-mass system was derived based on the passive modification method in the receptance method,and the zero assignment of the target DOF in the multi-DOF system was performed to suppress the corresponding vibration under the target DOF. On this basis,a DVA was designed and applied to the fluid-conveying pipes for experiments to verify its vibration-reduction effect.<b>[Results]</b>The results show that the designed DVA can well absorb the vibration at the target frequency, and the vibration reduction is better for a larger tuned mass when the target frequency is the same.<b>[Conclusions]</b>Such DVA is convenient to install and has a wide application range,which can provide a certain reference for pipe vibration reduction research.