泡沫结构对功能梯度压电智能板热-机械振动响应的影响

IF 3.6 3区 材料科学 Q2 ENGINEERING, MECHANICAL
Muhammet Mevlüt Karaca, Ismail Esen
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引用次数: 0

摘要

本研究模拟和研究了泡沫结构和热载荷对PZT-5H和BaTiO3制成的功能梯度(FGM)压电板的热机械振动行为的影响。采用纳维耶技术求解了由哈密顿原理和高阶剪切理论导出的板的运动方程。FGM板的底部由BaTiO3制成,顶部由PZT-5H固体/泡沫材料制成,研究了均匀泡沫、对称泡沫、底部泡沫和顶部泡沫四种不同的泡沫模型。除了温度载荷和外加电流外,该研究还研究了不同材料分级指数和泡沫拓扑结构对智能板振动屈曲行为的影响。PZT-5H是固体智能板热振动屈曲抗力最高的材料,而对称泡沫结构的热抗力最高,均匀泡沫结构的热抗力最低。除了热载荷外,外加电势还会由于电弹性行为而产生软化效应,泡沫结构已被证明可以改善智能FGM板的热振动行为。研究还发现,BaTiO3和PZT-5H以及泡沫结构的使用改善了智能FGM板的电弹性性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On the effect of foam structures on thermo-mechanical vibration response of functionally graded piezoelectric smart plates

This study models and investigates the effects of foam structure and thermal load on the thermomechanical vibration behavior of functionally graded (FGM) piezoelectric plates made of PZT-5H and BaTiO3. The Navier technique is used to solve the equation of motion of the plates, which is derived from Hamilton's principle and higher-order shear theory. The FGM plate is made of BaTiO3 on the bottom and PZT-5H solid/foam material on the top, and the study investigates four different foam models: uniform, symmetric, bottom, and top foam. In addition to temperature loading and applied external electric current, the study looked at how different material grading indices and foam topologies affected the smart plate's vibration buckling behavior. PZT-5H is the material with the highest thermal vibration buckling resistance of the solid smart plate, whereas the Symmetric Foam structure has the highest thermal resistance and the Uniform Foam structure has the lowest. In addition to the thermal load, the applied external electric potential causes a softening effect due to electro-elastic behavior, and the foam structure has been shown to improve the thermal vibration behavior of the smart FGM plate. It was also discovered that the usage of BaTiO3 and PZT-5H, as well as the foam structure, improved the electro-elastic behavior of the smart FGM plate.

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来源期刊
International Journal of Mechanics and Materials in Design
International Journal of Mechanics and Materials in Design ENGINEERING, MECHANICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
6.00
自引率
5.40%
发文量
41
审稿时长
>12 weeks
期刊介绍: It is the objective of this journal to provide an effective medium for the dissemination of recent advances and original works in mechanics and materials'' engineering and their impact on the design process in an integrated, highly focused and coherent format. The goal is to enable mechanical, aeronautical, civil, automotive, biomedical, chemical and nuclear engineers, researchers and scientists to keep abreast of recent developments and exchange ideas on a number of topics relating to the use of mechanics and materials in design. Analytical synopsis of contents: The following non-exhaustive list is considered to be within the scope of the International Journal of Mechanics and Materials in Design: Intelligent Design: Nano-engineering and Nano-science in Design; Smart Materials and Adaptive Structures in Design; Mechanism(s) Design; Design against Failure; Design for Manufacturing; Design of Ultralight Structures; Design for a Clean Environment; Impact and Crashworthiness; Microelectronic Packaging Systems. Advanced Materials in Design: Newly Engineered Materials; Smart Materials and Adaptive Structures; Micromechanical Modelling of Composites; Damage Characterisation of Advanced/Traditional Materials; Alternative Use of Traditional Materials in Design; Functionally Graded Materials; Failure Analysis: Fatigue and Fracture; Multiscale Modelling Concepts and Methodology; Interfaces, interfacial properties and characterisation. Design Analysis and Optimisation: Shape and Topology Optimisation; Structural Optimisation; Optimisation Algorithms in Design; Nonlinear Mechanics in Design; Novel Numerical Tools in Design; Geometric Modelling and CAD Tools in Design; FEM, BEM and Hybrid Methods; Integrated Computer Aided Design; Computational Failure Analysis; Coupled Thermo-Electro-Mechanical Designs.
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