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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Hybrid damping of smart, functionally graded plates using piezoelectric, fiber-reinforced composites
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Hybrid damping of smart, functionally graded plates using piezoelectric, fiber-reinforced composites

机译：使用压电纤维增强复合材料的智能功能梯度板的混合阻尼

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摘要

This paper deals with the investigation of active, constrained layer damping (ACLD) of smart, functionally graded (FG) plates. The constraining layer of the ACLD treatment is considered to be made of a piezoelectric, fiber-reinforced composite (PFRC) material with enhanced effective piezoelectric coefficient that quantifies the in-plane actuating force due to the electric field applied across the thickness of the layer. The Young's modulus and the mass density of the FG plates are assumed to vary exponentially along the thickness of the plate, and the Poisson's ratio is assumed to be constant over the domain of the plate. A finite-element model has been developed to model the open-loop and closed-loop dynamics of the FG plates integrated with two patches of ACLD treatment. The frequency response of the plates revealed that the active patches of ACLD treatment significantly improve the damping characteristics of the FG plates over the passive damping. Emphasis has been placed on investigating the effect of variation of piezoelectric fiber angle in the constraining layer of the ACLD treatment on the attenuating capability of the patches. The analysis also revealed that the activated patches of the ACLD treatment are more effective in controlling the vibrations of FG plates when the patches are attached to the surface of the FG plates with minimum stiffness than when they are attached to the surface of the same with maximum stiffness
机译：本文研究了智能，功能梯度（FG）板的主动约束层阻尼（ACLD）。 ACLD处理的约束层被认为是由具有增强的有效压电系数的压电纤维增强复合材料（PFRC）制成，该材料可量化由于施加在层厚度上的电场而引起的面内驱动力。假设FG板的杨氏模量和质量密度沿板的厚度呈指数变化，并且泊松比在板的整个区域内保持恒定。已经开发了有限元模型来模拟结合了两个ACLD处理的FG板的开环和闭环动力学。板的频率响应表明，与被动阻尼相比，ACLD处理的有源贴片显着改善了FG板的阻尼特性。重点已放在研究ACLD处理的约束层中压电纤维角度变化对贴片衰减能力的影响。分析还显示，当贴片以最小的刚度附着到FG板的表面时，ACLD处理的活化贴片在控制FG板的振动方面比将其最大程度地附着到FG板的表面时更有效地控制FG板的振动。刚性

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