Modeling of Actively Damped Beams with Piezoelectric Actuators with Finite Stiffness Bond
Modeling of Actively Damped Beams with Piezoelectric Actuators with Finite Stiffness Bond
复制标题
使用具有有限刚度键的压电执行器的主动阻尼梁建模
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
S. D. Almeida
中科院分区：
文献类型：
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作者：
A. Faria;S. D. Almeida
梁的压电应变驱动已被广泛研究。众所周知，许多非理想性可能会影响压电传感器或致动器的性能。特别地，致动器和结构之间的有限刚度结合的存在导致安装在结构的表面上的诱导应变致动器（或传感器）的有效性（或灵敏度）降低。这种效应对于短致动器和/或较不硬的接合层可能是显著的。这项工作的目的是评估的影响，压电传感器/执行器和结构的主动阻尼梁进行刚体旋转和弹性变形之间的有限刚度债券。模型中还考虑了压电材料的去极化效应。提出了一种有限元制剂，将这种效果。该公式使用欧拉-伯努利模型的梁，并假设粘结层是在纯剪切状态。效果...
The piezoelectric strain actuation of beams has been extensively studied. It is well known that a number of non-idealities may affect the performance of piezoelectric sensors or actuators. In particular, the existence of a finite stiffness bond between the actuator and the structure causes a reduction in the effectiveness (or sensitivity) of induced strain actuators (or sensors) mounted on the surface of a structure. This effect may be significant for short actuators and/or less stiff bonding layers. The objective of this work is to assess the influence of a finite stiffness bond between piezoelectric sensors/actuators and the structure on the active damping of beams subjected to rigid body rotations and elastic deformations. The depoling of the piezoelectric material is also taken into account in the model. A finite element formulation that incorporates this effect is proposed. The formulation uses an Euler-Bernoulli model for the beam and assumes the bond layer to be in a state of pure shear. The effect...