Vibration control of skew magneto-electro-elastic plates using active constrained layer damping

摘要

In this article, the effect of active constrained layer damping (ACLD) on the linear frequency response characteristics of skew magneto-electro-elastic (SMEE) plates has been evaluated. The constraining and the constrained layer of ACLD treatment are considered to be made of 1-3 piezoelectric composite (PZC) and viscoelastic layer, respectively. The advantage of incorporating smart materials such as PZC in attenuating the vibrations of the SMEE plates is thoroughly investigated. In this regard, a three-dimensional finite element (FE) formulation is derived with the aid of the principle of virtual work considering the coupling between magnetic, electric and elastic fields. The SMEE plate kinematics is governed by layer-wise shear deformation theory. The Complex modulus approach is adopted in order to model the constrained layer of the ACLD patch. A special emphasis is placed on investigating the effect of various skew angles on the frequency response of SMEE plates with ACLD treatment. Meanwhile, an exhaustive parametric study is carried out to analyze the influence of control gain, stacking sequence, patch position, fiber orientation angle of PZC, aspect ratio, and coupling effects. The results confirm that these parameters in association with ACLD treatment and skew angle significantly affect the damping characteristics and hence the controlled frequency response of SMEE plates. Moreover, the numerical results of this research lay a strong platform in the field of vibration and control. Also, it encourages the optimized design and analysis of smart SMEE structures for the application of sensors and actuators.