SMA纤维复合材料梁振动半主动控制

THE SEMI-ACTIVE CONTROL OF SHAPE MEMORY ALLOY COMPOSITE BEAM

  • 摘要: 分析了一类形状记忆合金(SMA)纤维混杂层合梁用于振动控制的动力学模型和作用机理. 采用多胞模型、形状记忆合金一维本构关系分析方法,同时考虑横向剪切的影响,建立了层合梁的数学模型. 半主动控制是通过改变受控结构的参数来减小结构振动的响应.根据开关控制原理确定可变刚度系统的控制律,进行SMA纤维混杂层合梁的半主动控制的数值仿真. 结果表明,将半主动控制应用于梁的振动控制是一种有效的方法.

     

    Abstract: The dynamic model of a hybrid composite beam vibrationcontrol using shape memory alloy(SMA) is analyzed. This model isdeveloped based on the one-dimensional SMA constitutive equation and multicellmodel, and considers the influence of transverse shear deformation of thehybrid composite beam. Semi-active control can reduce the response of theconstruction by changing its parameter. According tothe switch control theory, the control law can be determined and then thesemi-active control simulation is carried out. The numerical results show that thesemi-active control is an effective way for SMA fiber composites.

     

/

返回文章
返回