压电半导体圆柱壳中温度诱导机电相互作用机理及传感优化

IF 2.5 3区 工程技术 Q2 MECHANICS
Ziwen Guo, Changwen Mi, Yanjie Mei, Gongye Zhang
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引用次数: 0

摘要

压电半导体(PSs)的机电性能对温度变化非常敏感。高温环境监测和人体体温评估只是这一现象的一些可能应用。本文利用一阶剪切变形理论对压电半导体圆柱壳(PSCS)中温度诱导的机电相互作用进行了理论研究。温度变化通过热弹性和热释电耦合到导出的二维方程中。数学结果表明,温度场可以控制壳体内的位移、电势和移动电荷的分布。我们的研究系统地研究了热弹性、热释电和掺杂水平对PSCS电荷再分布的影响。此外,解析解和有限元解之间的对比分析表明了显著的一致性。为了优化温度传感应用设计,在考虑不同热载荷区域分布和边界条件的情况下,对基于阵列的温度场下PSCS的多场耦合响应进行了数值分析。本文提出的进展为壳体结构内PS温度传感器的设计和优化提供了很大的希望。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mechanism of temperature-induced electromechanical interactions and sensing optimization in a piezoelectric semiconductor cylindrical shell

Electromechanical behaviors of piezoelectric semiconductors (PSs) are sensitive to temperature changes. High-temperature environment monitoring and human body temperature assessment are just some of the possible applications of this phenomenon. This paper presents a theoretical study on temperature-induced electromechanical interactions in a piezoelectric semiconductor cylindrical shell (PSCS) within the first-order shear deformation theory of shells. Temperature variations are coupled into the derived two-dimensional equations via thermoelasticity and pyroelectricity. The mathematical outcomes reveal that the distribution of displacements, electric potentials, and mobile charges in the shell can be manipulated by the temperature field. Our research systematically investigates the effects of thermoelasticity, pyroelectricity, and doping levels on charge redistributions across the PSCS. Furthermore, a comparative analysis between analytical and finite element solutions demonstrates remarkable agreement. For the optimized design of temperature-sensing applications, the multi-field coupling responses of the PSCS are numerically analyzed under array-based temperature fields, considering various distributions of thermal loading regions and boundary conditions. The advancements presented here hold great promise for the design and optimization of PS temperature sensors within shell configurations.

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来源期刊
CiteScore
4.40
自引率
10.70%
发文量
234
审稿时长
4-8 weeks
期刊介绍: Archive of Applied Mechanics serves as a platform to communicate original research of scholarly value in all branches of theoretical and applied mechanics, i.e., in solid and fluid mechanics, dynamics and vibrations. It focuses on continuum mechanics in general, structural mechanics, biomechanics, micro- and nano-mechanics as well as hydrodynamics. In particular, the following topics are emphasised: thermodynamics of materials, material modeling, multi-physics, mechanical properties of materials, homogenisation, phase transitions, fracture and damage mechanics, vibration, wave propagation experimental mechanics as well as machine learning techniques in the context of applied mechanics.
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