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Active control of forced vibrations in adaptive structures using a higher order model

机译：使用高阶模型主动控制自适应结构中的强迫振动

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This paper deals with a finite element formulation for active control of forced vibrations, including resonance, of thin plate/shell laminated structures with integrated piezoelectric layers, acting as sensors and actuators, based on third-order shear deformation theory. The finite element model is a single layer triangular nonconforming plate/shell element with 24 degrees of freedom for the generalized displacements, and one electrical potential degree of freedom for each piezoelectric element layer, which are surface bonded or embedded in the laminate. The Newmark method is considered to calculate the dynamic response of the laminated structures, forced to vibrate in the first natural frequency. To achieve a mechanism of active control of the structure dynamic response, a feedback control algorithm is used, coupling the sensor and active piezoelectric layers. The model is applied in the solution of illustrative cases, and the results are presented and discussed.
机译：本文基于三阶剪切变形理论，研究了用于主动控制带有集成压电层的薄板/壳层状结构的强迫振动（包括共振）的有限元公式，这些压电层用作传感器和致动器。有限元模型是单层三角形不合格板/壳单元，其广义位移为24自由度，每个压电元件层的电势自由度为表面结合或嵌入到层压板中。考虑使用Newmark方法来计算层压结构的动态响应，这些响应被迫以第一固有频率振动。为了实现对结构动态响应的主动控制机制，使用了反馈控制算法，将传感器层和主动压电层耦合在一起。该模型用于说明性案例的解决方案中，并介绍和讨论了结果。

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