The transmissibility of nonlinear energy sink based on nonlinear output frequency-response functions

被引：34
|
作者：
Yang, Kai [1 ]
Zhang, Ye-Wei [1 ,2 ]
Ding, Hu [1 ,4 ]
Chen, Li-Qun [1 ,3 ,4 ]
机构：
[1] Shanghai Univ, Shanghai Inst Appl Math & Mech, Shanghai 200072, Peoples R China
[2] Shenyang Aerosp Univ, Fac Aerosp Engn, Shenyang 110136, Peoples R China
[3] Shanghai Univ, Dept Mech, Shanghai 200444, Peoples R China
[4] Shanghai Univ, Shanghai Key Lab Mech Energy Engn, Shanghai 200072, Peoples R China
来源：
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION | 2017年 / 44卷
基金：
中国国家自然科学基金;
关键词：
Nonlinear energy sink; Transmissibility; Frequency-response function; Cubic nonlinear stiffness; VIBRATION ISOLATION PLATFORM; MECHANICAL OSCILLATORS; SYSTEMS; TRANSFERS; DYNAMICS;
D O I：
10.1016/j.cnsns.2016.08.008
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
For the first time, a new representation of transmissibility based on nonlinear output frequency-response functions (NOFRFs) is proposed in the present study. Furthermore, the transmissibility is applied to evaluate the vibration isolation performance of a nonlinear energy sink (NES) in frequency domain. A two-degree-of-freedom (2-DOF) structure with the NES attached system is adopted. Numerical simulations have been performed for the 2-DOF structure. Moreover, the effects of NES parameters on the transmissibility of the nonlinear system are evaluated. By increasing the viscous damping and mass, as well as decreasing the cubic nonlinear stiffness of the NES, the analytical results show that the transmissibility of the 2-DOF structure with NES is reduced over all resonance regions. Therefore, the present paper produces a novel method for NES design in frequency domain. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：184 / 192
页数：9
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