A quasi-zero-stiffness isolator with a shear-thinning viscous damper

作     者：Guilin WEN Yu LIN Junfeng HE Guilin WEN;Yu LIN;Junfeng HE

作者机构：School of Mechanical and Electrical EngineeringGuangzhou UniversityGuangzhou 510006China School of Mechanical EngineeringYanshan UniversityQinhuangdao 066004Hebei ProvinceChina 

出 版 物：《Applied Mathematics and Mechanics(English Edition)》 (应用数学和力学（英文版）)

年 卷 期：2022年第43卷第3期

页      面：311-326页

核心收录：

学科分类：12[管理学] 083002[工学-环境工程] 1204[管理学-公共管理] 120402[管理学-社会医学与卫生事业管理(可授管理学、医学学位)] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0837[工学-安全科学与工程] 

基　　金：Project supported by the Key Program of National Natural Science Foundation of China(No.11832009) the National Natural Science Foundation of China(Nos.11902085 and 12172095) the Natural Science Foundation of Guangdong Province of China(No.2021A1515010320) 

主　　题：quasi-zero-stiffness(QZS)isolator shear-thinning viscous damper(SVD) vibration isolation force transmissibility 

摘      要：Quasi-zero-stiffness(QZS)vibration isolators have been widely studied,because they show excellent high static and low dynamic stiffnesses and can effectively solve low-frequency and ultralow-frequency ***,traditional QZS(T-QZS)vibration isolators usually adopt linear damping,owing to which achieving good isolation performance at both low and high frequencies is difficult.T-QZS isolators exhibit hardening stiffness characteristics,and their vibration isolation performance is even worse than that of linear vibration isolators under a large excitation ***,this study proposes a QZS isolator with a shear-thinning viscous damper(SVD)to improve the vibration isolation performance of the T-QZS *** force-velocity relation of the SVD is obtained,and a dynamic model is established for the *** dynamic responses of the system are solved using the harmonic balance method(HBM)and the Runge-Kutta *** vibration isolation performance of the system is evaluated using force transmissibility,and the isolator parameters are *** results show that compared with the T-QZS isolators,the proposed QZS-SVD isolator achieves the lower initial vibration isolation frequency and peak value,and exhibits better vibration isolation performance at medium and high ***,the proposed isolator can withstand a large excitation amplitude in the effective vibration isolation range.