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The finite element based study on active attenuation of structural vibration using porous ferroelectric ceramics

机译:基于有限元的结构振动主动衰减使用多孔铁电陶瓷

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The numerical analysis carried out in the present paper is one of the first analyses focused on the application of porous ferroelectric materials in context of active vibration attenuation. The active vibration damping of smart plate panel is achieved with ferroelectric ceramics. The plate panel is modelled as composite structure. The finite element method is implemented to model the piezo-laminated plate panel and to demonstrate the static as well as dynamic analysis of structural vibrations subjected to external loading. Modeling of piezo-laminated structure is based on the assumptions of first-order shear deformation theory (FSDT). Ferroelectric ceramic layers are modelled using linear piezoelectric theory. The performance of porous ferroelectric ceramics is compared with dense ferroelectric ceramics in context of active vibration control. The numerical study reveals that the vibration amplitude of the structural vibration can be attenuated by approximately 83% and 91% after 1 second corresponding to the application of dense piezoelectric material and 30% porous piezoelectric material respectively.
机译:本文中进行的数值分析是第一次分析中的一个分析,其专注于在主动振动衰减的背景下施加多孔铁电材料。用铁电陶瓷实现智能板面板的主动振动阻尼。板面板被建模为复合结构。实施有限元方法以模拟压电层压板面板,并展示静态以及对外部负荷进行的结构振动的动态分析。压电层压结构的建模是基于一阶剪切变形理论(FSDT)的假设。使用线性压电理论建模铁电陶瓷层。在主动振动控制的背景下将多孔铁电陶瓷的性能与致密的铁电陶瓷进行比较。数值研究表明,在对应于致密压电材料和30%多孔压电材料的应用后,结构振动的振动幅度可以在1秒后衰减约83%和91%。

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