3D Printed Gear-Based Quasi-Zero Stiffness Vibration Isolation Metastructure  

作　　者：Gexin Wang Jianyang Li Yan Liu Kunyan Wang Luquan Ren Qingping Liu Lei Ren Bingqian Li 

机构地区：[1]Key Laboratory of Bionic Engineering(Ministry of Education),Jilin University,Changchun,130022,China [2]Advanced Materials Thrust,The Hong Kong University of Science and Technology(Guangzhou),Guangzhou,511400,China [3]School of Mechanical,Aerospace and Civil Engineering,University of Manchester,Manchester,M139PL,UK

出　　处：《Journal of Bionic Engineering》2025年第2期767-782,共16页仿生工程学报(英文版)

基　　金：supported in part by National Key R&D Program of China under Grant 2024YFB4708600;National Natural Science Foundation of China under Grant 52305304;Jilin Youth Growth Technology Project under Grant 20230508147RC;the Science and Technology Research Project of Jilin Provincial Education Department(No.JJKH20231193KJ);supported in part by the National Natural Science Foundation of China under Grant 52021003 and Grant 52205565;in part by the Natural Science Foundation of Jilin Province under Grant 20210101053JC.

摘　　要：Traditional linear vibration isolators struggle to combine high load-bearing capacity with low-frequency vibration isolation, whereas nonlinear metastructure isolators can effectively fulfill both functions. This paper draws inspiration from the Quasi-Zero Stiffness (QZS) characteristics resulting from the buckling deformation of beams, and proposes a gear-based QZS structure by arranging beams in a circular array. We investigated the static mechanical behavior under different structural parameters, loading angles, and gear combinations through experiments and simulations, and demonstrated the mechanical performances could be effectively programmed. Subsequent vibration isolation tests on the double gears prove superior vibration isolation performance at low frequency while maintaining high load-bearing capacities. Additionally, a key contribution of our work is the development of a mathematical model to characterize the buckling behavior of the unit beam within the gear structure, with its accuracy validated through finite element analysis and experimental results. The gear’s modulus, number of teeth, and pressure angle are selected according to standard series, allowing the gear can be seamlessly integrated into existing mechanical systems in critical fields such as aerospace, military, and etc.

关 键 词：3D Printing Vibration Isolation Quasi-zero stiffness GEAR Metastructure 

分 类 号：TH113.1[机械工程—机械设计及理论]