船舶辅机单层半主动非线性隔振系统振动特性分析  

Vibration characteristics analysis of auxiliary mono-layer semi-active isolation system

作　　者：夏兆旺[1] 袁秋玲[1] 茅凯杰 王雪涛[1] 方媛媛[1] 

机构地区：[1]江苏科技大学能源与动力工程学院,江苏镇江212003

出　　处：《船舶力学》2017年第1期69-75,共7页Journal of Ship Mechanics

基　　金：国家自然科学基金(11302088);江苏省自然科学基金青年基金(BK2012278);江苏省高校自然科学基金(16KJB580002)

摘　　要：文章针对磁流变阻尼器提出了一个简单的修正Bingham模型。基于修正Bingham模型建立了船舶单层隔振系统的非线性动力学方程,通过平均法得到了半主动隔振系统发生主共振时的理论解,并进行了数值验证。结果表明:采用平均法得到的理论解和数值解有很好的一致性;在主共振区:磁流变阻尼器的阻尼和控制力对半主动隔振系统的幅频响应影响都很明显。半主动隔振系统的幅频响应振幅随着阻尼和控制力的增加都显著减小。在非共振区:磁流变阻尼器的阻尼、控制力和零力速度对系统的响应影响都很小。This paper proposes a correction Bingham model for describing MR damper by experimental data. The primary resonance reduction in an auxiliary mono-layer semi-active isolation system is investigated. An analytical solution for the auxiliary mono-layer semi-active isolation system＇s primary resonance is obtained, which is verified by numerical solution with Simulink. The effect of model parameters on the system＇s primary resonance is studied. The research results show that the damping of MRD and the control force have a significant effect on amplitude-frequency response in the resonance region. The amplitude-frequency response of the mono-layer semi-active isolation system is decreased with the increase of the damping of MRD and control force. Yet the damping, control force and speed contribute very little to amplitude-frequency response change.

关 键 词：船舶辅机 半主动 平均法 非线性 主共振 

分 类 号：U661.1[交通运输工程—船舶及航道工程]