并联非线性能量阱吸振效能仿真研究

doi:10.16182/j.issn1004731x.joss.201809023

系统仿真学报 ›› 2018, Vol. 30 ›› Issue (9): 3411-3419.doi: 10.16182/j.issn1004731x.joss.201809023

并联非线性能量阱吸振效能仿真研究

陈建恩, 何伟, 葛为民, 刘军, 钟锐

天津理工大学天津市先进机电系统设计与智能控制重点实验室,天津 300384

收稿日期:2016-12-07 出版日期:2018-09-10 发布日期:2019-01-08
作者简介:陈建恩(1984-),男,山东菏泽,博士,讲师,研究方向为机械系统非线性振动及其控制;何伟(1991-),男,山西忻州,硕士生,研究方向为非线性振动控制。
基金资助:
国家自然科学基金(11402170)

Simulation Study on Vibration Absorption Efficiency of Parallel Nonlinear Energy Sinks

Chen Jian’en, He wei, Ge Weimin, Liu Jun, Zhong Rui

Tianjin University of Technology, Tianjin Key Laboratory of the Design and Intelligent Control of the Advanced Mechatronical System, Tianjin 300384, China

Received:2016-12-07 Online:2018-09-10 Published:2019-01-08

摘要/Abstract

摘要： 利用并联非线性能量阱(NES)抑制主结构的振动,对比研究了并联NES和单NES的吸振效能。推导出简谐激励作用下系统的动力学方程并利用数值方法对其进行分析。通过对单NES和并联NES的安装位置和参数的研究发现,常温下,并联NES的吸振效能优于等质量的单NES。考虑主结构共振频率随温度的变化,在不同温度下对单NES和并联NES的刚度进行优化。研究结果显示,并联NES始终比单NES具有更强的吸振效能,并且,温度越高该优势越为明显。

关键词: 并联非线性能量阱, 热环境, 简谐激励, 效能

Abstract: Parallel nonlinear energy sinks are used to suppress the vibration of the primary structure. The vibration absorption efficiencies of the single and parallel NESs are comparatively investigated. The dynamic equation under harmonic excitation is derived and the dynamic responses are analyzed by using numerical method. Through studying the influences of the installation locations and parameters of the single and parallel NESs respectively, it is found that, under normal temperature, the vibration absorption efficiency of the parallel NESs is better than that of the single NES which having the equal mass with the former absorber. Considering that the resonance frequency of the primary structure varies along with temperature, the stiffnesses of the single and parallel NESs are optimized under different temperatures. The results indicate that the parallel NESs always has the higher vibration absorption efficiency than that of the single NES, and the advantage of the parallel NESs is more obvious when the primary structure is under the higher temperature.

Key words: parallel nonlinear energy sinks, thermal environment, harmonic excitation, efficiency

中图分类号:

O322
O327

陈建恩, 何伟, 葛为民, 刘军, 钟锐. 并联非线性能量阱吸振效能仿真研究[J]. 系统仿真学报, 2018, 30(9): 3411-3419.

Chen Jian’en, He wei, Ge Weimin, Liu Jun, Zhong Rui. Simulation Study on Vibration Absorption Efficiency of Parallel Nonlinear Energy Sinks[J]. Journal of System Simulation, 2018, 30(9): 3411-3419.

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并联非线性能量阱吸振效能仿真研究

Simulation Study on Vibration Absorption Efficiency of Parallel Nonlinear Energy Sinks

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