基于一种新型磁致负刚度结构的低频隔振系统分析与设计  

Analysis and Design of Low Frequency Vibration Isolation System Based on New Type of Magnetic Negative-stiffness Structure

作　　者：张晓平[1] 何琳[1] 周炜[1] 

机构地区：[1]海军工程大学振动与噪声研究所船舶振动噪声重点实验室,武汉430033

出　　处：《船舶工程》2015年第9期45-48,67,共5页Ship Engineering

摘　　要：为提高隔振系统对低频微振动的隔离能力,研究了一种新型三磁体负刚度结构,分析了该结构产生负刚度的原理。将三磁体负刚度结构与隔振系统并联使用,在不影响原隔振系统载荷性能的情况下可降低系统的固有频率。分析了隔振器刚度及磁体间初始间隙对并联系统刚度特性的影响,提出从稳定性和隔振性能两方面来进行低频隔振系统设计。In order to improve the system isolating ability of micro-vibration under low frequency, a new negative stiffness structure using three magnets was studied; the mechanism of its negative stiffness was analyzed. If the negative stiffness structure and vibration isolating system were combined, the natural frequency of the combined system could decrease without affecting the load ability of the system. The effect of spring＇s stiffness and initial distance between magnets to combined system＇s stiffness was analyzed. It was suggested to design the combined low frequency vibration isolation system considering stability and isolation ability.

关 键 词：负刚度 永磁体 固有频率 隔振系统 

分 类 号：TB535.1[理学—物理]