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Active vibration control of CNT-reinforced composite cylindrical shells via piezoelectric patches

机译：碳纳米管增强复合圆柱壳的压电振动主动控制

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The active vibration control of carbon nanotube (CNT) reinforced functionally graded composite cylindrical shell is studied in this investigation using piezoelectric materials. Piezoelectric patches are bonded onto the outer and inner surfaces of the cylindrical shell to act as the actuator and sensor, respectively. Thermal effects are taken into account. Reddy's high-order shear deformation theory is used in the structural modeling. The displacement fields of the piezoelectric actuator and sensor are given, according to the geometrical deformation relationship. The equation of motion of the CNT reinforced composite cylindrical shell is formulated by way of Hamilton's principle, the solution of which is derived using the assumed mode method. In the research surrounding active vibration control, the controller is designed using velocity feedback and LQR methods. Influences of thickness on the vibration control effects of the cylindrical shell are analyzed. The control results gained by way of different control methods are compared. The active control effects of cylindrical shells with different placements of piezoelectric patches are also researched. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本研究使用压电材料研究了碳纳米管（CNT）增强功能梯度复合圆柱壳的主动振动控制。压电贴片粘结在圆柱壳的外表面和内表面上，分别用作致动器和传感器。考虑了热效应。在结构建模中使用了Reddy的高阶剪切变形理论。根据几何变形关系，给出了压电致动器和传感器的位移场。碳纳米管增强复合材料圆柱壳的运动方程是根据汉密尔顿原理确定的，其求解采用假设的模态方法得出。在主动振动控制的研究中，采用速度反馈和LQR方法设计了控制器。分析了厚度对圆柱壳振动控制效果的影响。比较了通过不同控制方法获得的控制结果。还研究了具有不同压电贴片位置的圆柱壳的主动控制效果。 （C）2016 Elsevier Ltd.保留所有权利。

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