Geometrically nonlinear inerter for vibration suppression  

作　　者：Yuyang SONG Liqun CHEN Tianzhi YANG 

机构地区：[1]School of Mechanical Engineering and Automation,Northeastern University,Shenyang 110819,China [2]Shanghai Institute of Applied Mathematics and Mechanics,Shanghai Key Laboratory of Mechanics in Energy Engineering,Shanghai Frontier Science Center of Mechanoinformatics,School of Mechanics and Engineering Science,Shanghai University,Shanghai 200444,China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2023年第11期1871-1886,共16页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Nos.12232014 and 12072221);the Fundamental Research Funds for the Central Universities of China(No.2013017)。

摘　　要：A two-degree-of-freedom(2DOF)vibration isolation structure with an integrated geometric nonlinear inerter(NI)device is proposed.The device is integrated into an inertial nonlinear energy sink(INES),and its vibration suppression performance is examined by the Runge-Kutta(RK)method and verified by the harmonic balance method(HBM).The new isolator is compared with a traditional vibration isolator.The results show a significant improvement in the vibration suppression performance.To investigate the effects of the excitation amplitude and initial condition on the dynamics of the system,a series of transmissibility-frequency response analyses are performed based on the displacement transmissibility.The energy flow of the system is analyzed,and numerous calculations reveal a series of ideal values for the energy sink in the NI-INES system.This study provides new insights for the design of vibration isolators.

关 键 词：inerter nonlinear dynamic ISOLATOR ENERGY 

分 类 号：O322[理学—一般力学与力学基础]