摘要
针对具体实物模型 ,采用微振子模型描述粘弹性材料的剪切模量随频率变化的特性 ,采用有限元方法进行分析 ,提出了一种全新的降阶方法 ,使得最后的降阶模型不仅维数远小于初始有限元模型 ,而且可观、可控 ,能直接用于控制器设计。采用模态实验验证有限元模型 ,在此基础上 ,设计出合适的控制器 ,进行实时控制实验研究 ,结果表明 。
The finite element analysis and experimental study of cantilever beams with active constrained damping treatments are presented in this paper. The mini oscillation model is employed to describe the shear modulus of viscoelastic materials, which varies with frequency. The finite element method is utilised to derive the mathematical model. A new model reduction procedure is proposed. The final model is not only far smaller than the original one but also observable and controllable. It can be used to design a controller directly. The finite element model is validated by modal experiments. Based on this, a controller is designed and real time vibration control experiments are performed. The results show that the vibration control effect is obvious.
出处
《振动工程学报》
EI
CSCD
北大核心
2002年第4期383-388,共6页
Journal of Vibration Engineering
基金
国家重点实验室基金资助项目 (编号 :JS5 2 .4 .3)
关键词
悬臂梁
实验研究
振动控制
主动约束层阻尼
有限元分析
微振子模型
vibration control
active constrained damping
model reduction
finite element analysis
mini oscillation model
