Mechanical design and test of a broadband ring meta-structure isolator for seawater pump
LIU Haiping
WANG Zhe
ZHOU Shikun
ZHENG Lifang
Abstract：Addressing the rotational vibration issues encountered during the operation of seawater pumps,and integrating measured vibration characteristics,a quasi-zero stiffness ring meta-structure isolator was designed for vibration control based on the principles of quasi-zero stiffness isolation and the bandgap features of meta-structure.First of all,taking a typical seawater pump as the research object and based on an integrated quasi-zero stiffness structure,a structural design scheme of the ring meta-structure isolator was proposed.Then,models of quasi-zero stiffness unit cell,one-dimensional quasi-zero stiffness meta-structure and quasi-zero structure ring meta-structure isolator were established using finite element method and theoretical method,respectively.Their static and dynamic mechanical characteristics were calculated and analyzed,and their isolation effect on the output vibration of seawater pumps was evaluated.The calculation and test results show that the quasi-zero stiffness ring meta-structure isolator provides multiple bandgaps at low frequencies,and exhibits significant vibration suppression effects on typical frequencies of seawater pumps.
Keywords：Integrated quasi-zero stiffnessBroadband vibration isolationMeta-structureRing isolatorRotating machinery
Publication Date：2025-09-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 190-196 )