摘要
从形状记忆合金 (SMA)智能结构用于主动振动抑制的构想出发 ,建立了含SMA非线性本构关系的智能复合材料结构的有限元模型 ,并结合试验验证了主动振动抑制的效果。试验和计算结果都表明SMA是振动抑制的有效驱动器 ,通过主动应变能调整 (ASET)的方法对结构固有频率的影响非常显著 ,这种影响主要体现在基频 (一阶固有频率 )的改变上 ,对高阶固有频率的影响逐渐减小。
For the purpose of vibration suppression of smart structures embedded with shape memory alloy (SMA), a finite element model with nonlinear constitutive relations was established, together with some experiments to validate the effect of the active vibration control. Experimental and computation results indicate that SMA can be an effective driver for vibration control and the active strain energy tuning method can obviously affect the natural frequency of the structure, which can change the fundamental frequency more than others methods.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2002年第5期427-430,共4页
Acta Aeronautica et Astronautica Sinica
基金
国家自然科学基金 (5 0 0 75 0 0 7)资助项目
