连续梁的压电分流阻尼模型  

Piezoelectric Shunt Damping Model of Beam

作　　者：李宁[1,2] 张景绘[1] 

机构地区：[1]西安交通大学 [2]空军工程大学,西安710051

出　　处：《应用力学学报》2006年第3期398-402,510,共5页Chinese Journal of Applied Mechanics

摘　　要：建立具有压电分流阻尼的连续梁的动力学基本方程,推导出适用于各种不同分支电路构型的广义传递函数,并推导出对应于三种不同分支电路的电器元件最优参数表达式。对三种不同分支电路的减振特性进行理论分析和比较。分析结果表明,LR并联和LR串联分支电路可以有效地减小振动幅值,并具有相同的减振效果。在LR-C并联分支电路中,通过附加一个电容,可以减小最优设计时所需的电感值,但是减振效果降低。本文为连续梁的压电分流阻尼系统的减振设计提供了有效的方法。Dynamical governing equations of a beam with piezoelectric shunt damping were developed,and a generalized transfer function applicable for different shunt circuits was derived and analyzed comparatively. The optimal shunt circuit components were also explicitly determined. The numerical results reveal that the LR parallel circuit and LR series circuit enable to effectively reduce vibration amplitude with the identical effectiveness in vibration suppression. The LR-C parallel circuit allows to reduce the the required inductance due to the supplementary capacitance with less effectiveness in passive damping.

关 键 词：梁 压电材料 分支电路 传递函数 振动控制 

分 类 号：TB53[理学—物理] O32[理学—声学]