摘要
以船舶动力机械的安装特性为背景,提出了以空气弹簧作为被动隔振元件、超磁致伸缩作动器作为主动隔振元件的船舶动力机械双层混合隔振系统。在第一压磁理论和Stone-Weierstrass定理的基础上,建立了该隔振系统的非线性动力学模型。通过数值仿真,研究了该系统中非线性参数与幅频特性的关系;分析了超磁致伸缩作动器的励磁电流对隔振效果的影响。
A hybrid isolator consisting of a giant magnetostrictive actuator(GMA) and an air spring was presented.The nonlinear dynamic model of a two-stages vibration isolation system applying this type of hybrid isolator on a flexible foundation was established based on first magnetoelastic theory and Stone-Weierstrass theorem.The relation between the variation of nonlinear parameters and the amplitude-frequency response characteristic curve of the isolation system was discussed by use of numerical simulation.The influence of exciting current of GMA on isolation effect of the system was investigated as well.
出处
《振动与冲击》
EI
CSCD
北大核心
2010年第3期174-177,共4页
Journal of Vibration and Shock
基金
国家自然科学基金资助项目(编号:50675220)
关键词
超磁致伸缩作动器
混合隔振器
非线性
动力学特性
giant magnetostrictive actuator
hybrid isolator
nonlinear
dynamic characteristic
