智能复合材料结构的主动振动控制

基金项目: 国防科学基金资助课题

ACTIVE VIBRATION CONTROL OF SMART COMPOSITE STRUCTURES

摘要

摘要: 本文提出应用电流变体(Electro-Rheological Fluids)材料作为复合材料结构振动主动控制的材料,针对含电流变体材料的智能复合材料悬臂梁,进行了振动的主动控制,测试了智能复合材料悬臂梁在外加电场作用下,弹性模量、衰减系数、固有频率等振动特性的变化,同时,针对不同的梁材料,给出了材料变化对梁振动控制的影响.
- 智能复合材料 /
- 电流变体 /
- 主动控制
Abstract: Electro rheological fluids were selected as the active vibration control of smart composite structures. The experimental investigations were focused on evaluating the elasto-dynamic response charact eristics of beams featuring electror heological fluids when the beams were subject ed to forced vibration. Meantime, the active vibration control of smart composite beams is studied. The results of these considerations clearly demonstrate the ability to significantly change the vibrational characteristics of beams fabricated in smart composites by changing the electric field imposed on the fluid domain. A conclusion is made that the shear modulus of ER fluids can be controlled by the application of an electric field to the ER material.
- smart composite materials /
- electrorheological fluids /
- active control