Design and Mechanical Properties Test of Double Dynamic Vibration Absorber forHigh-temperature Pipelines

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Design and Mechanical Properties Test of Double Dynamic Vibration Absorber forHigh-temperature Pipelines

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[1]BAI Hongbai,CHEN Yipeng,REN Zhiying,et al.Design and Mechanical Properties Test of Double Dynamic Vibration Absorber forHigh-temperature Pipelines[J].Journal of Zhengzhou University (Engineering Science),2024,45(05):37-44.[doi:10.13705/j.issn.1671-6833.2024.05.011]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 45 Number of periods: 2024 05 Page number: 37-44 Column: Public date: 2024-08-08

Title:: Design and Mechanical Properties Test of Double Dynamic Vibration Absorber forHigh-temperature Pipelines

Author(s):: BAI Hongbai¹; CHEN Yipeng¹; REN Zhiying¹; LI Zhen²; HE Mingyuan²; 1. School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, China; 2. China National Nuclear Corporation Fujian Fuqing Nuclear Power Co. , Ltd. , Fuzhou 350318, China

Keywords:: nuclear power small branch tube; double dynamic vibration absorber; frequency adjustable; three-wayvibration absorption; broadband vibration absorb

CLC:: V416. 2

DOI:: 10.13705/j.issn.1671-6833.2024.05.011

Abstract:: In view of the fact that it was difficult to solve the problem of irregular vibration of small and mediumsized branch pipes in nuclear power units with traditional vibration damping supports, a circular double three-waydynamic vibration absorber based on metal rubber material was designed in this study, with total mass of 0. 084 kg,and the rectangular spring and metal rubber were fixed between the mass and the tooling fixture. Firstly, thedynamic model of the double dynamic vibration absorber was constructed, and then the equivalent mass of the smallbranch was determined by the mass induction method, and the stiffness and damping ratio of the vibration absorberwere optimized by combining the fixed-point theory. The harmonic response simulation analysis of the small branchtube double dynamic vibration absorber system showed that the vibration absorption effect of the double dynamicvibration absorber in the X, Y and Z directions was greater than 95%. The excitation test was carried out on thesmall branch tube with or without the double dynamic vibration absorber, the sinusoidal excitation amplitude was5 N, and the frequency range was 0 to 150 Hz, and the data showed that the vibration absorption effect of the double dynamic vibration absorber for the main vibration direction of the small branch tube Y and Z reached more than95%, and the vibration absorption efficiency in the X direction reached more than 75%.

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Last Update: 2024-09-02