可控约束层阻尼  

Controlled Constrained Damping of Layered System

作　　者：张希农[1] 陈灵[1] 张景绘[1] 

机构地区：[1]西安交通大学

出　　处：《西安交通大学学报》1998年第8期67-71,共5页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金重点资助项目;西安交通大学科研基金

摘　　要：针对薄壁结构振动，提出了一种主、被动杂交控制的新方式———可控约束层阻尼，利用压电片的逆压电效应控制约束阻尼层的运动，增加系统的阻尼．根据弹性、粘弹性、压电材料的本构关系，建立了具有可控约束阻尼层梁的控制微分方程．脉冲、正弦两种形式载荷的数值模拟表明，这种可控约束层阻尼对振动的抑制有较好的效果，且结构简单，易于实现．Controlled constrained damping of layered system is concerned with the active and passive hybrid damping of vibrating thin walled structures. The damping of these systems is strengthened by regulating the motion of constrained layer in accordance with the inverse effect of piezoelectricity. The governing equations for a beam with controlled constrained damping of the layer are derived by using constitutive equations for elastic, viscoelastic and piezoelectric materials. Numerical results are obtained on impulsive and sinusoidal loads. Hybrid control is shown to be effective on suppressing structural vibrations .

关 键 词：振动控制 可控约束层阻层 薄壁结构 杂交控制 

分 类 号：O327[理学—一般力学与力学基础] O342[理学—力学]