Generalized piezothermoelastic interactions in a piezoelectric rod subjected to pulse heat flux

IF 4.3 3区工程技术 Q1 MECHANICS

Journal of Non-Equilibrium Thermodynamics Pub Date : 2024-11-19 DOI:10.1515/jnet-2024-0077

Zuhur Alqahtani, Ibrahim Abbas, Alaa A. El-Bary

引用次数: 0

Abstract

This work investigates, using the Laplace transforms, the influence of thermal relaxation time in the piezo-thermoelastic rod under pulse heat flux. For the piezoelectric medium, the generalized piezothermoelastic fundamental equations are developed. The analytical solutions are expressed in the transformation domain using Laplace transforms. Laplace transforms are presented to solve the problem’s governing equations, removing the time impact and yielding analytical solutions for the temperature, electric field, displacement, and stresses in the Laplace domain. The time domain solutions of the variables under consideration are then found using numerical Laplace inversion and visually shown. The effects of the thermal time, pulse heating flux characteristic time, and constant heat flux are studied in a piezoelectric thermoelastic medium. The figures show that the thermal time, pulse heating flux characteristic time, and constant heat flux play significant roles in determining the values of all physical quantities.

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受脉冲热通量作用的压电棒中的广义压热弹性相互作用

这项研究利用拉普拉斯变换，探讨了脉冲热通量下压电热弹棒中热弛豫时间的影响。针对压电介质，建立了广义压热弹基本方程。分析解在变换域中使用拉普拉斯变换表示。拉普拉斯变换用于求解问题的支配方程，消除了时间影响，得出了拉普拉斯域中温度、电场、位移和应力的分析解。然后使用拉普拉斯数值反演法求得所考虑变量的时域解，并直观地显示出来。在压电热弹性介质中研究了热时间、脉冲加热通量特性时间和恒定热通量的影响。结果表明，热时间、脉冲加热通量特征时间和恒定热通量在决定所有物理量的值方面起着重要作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Non-Equilibrium Thermodynamics 物理-力学

CiteScore

9.10

自引率

18.20%

发文量

审稿时长

1 months

期刊介绍： The Journal of Non-Equilibrium Thermodynamics serves as an international publication organ for new ideas, insights and results on non-equilibrium phenomena in science, engineering and related natural systems. The central aim of the journal is to provide a bridge between science and engineering and to promote scientific exchange on a) newly observed non-equilibrium phenomena, b) analytic or numeric modeling for their interpretation, c) vanguard methods to describe non-equilibrium phenomena. Contributions should – among others – present novel approaches to analyzing, modeling and optimizing processes of engineering relevance such as transport processes of mass, momentum and energy, separation of fluid phases, reproduction of living cells, or energy conversion. The journal is particularly interested in contributions which add to the basic understanding of non-equilibrium phenomena in science and engineering, with systems of interest ranging from the macro- to the nano-level. The Journal of Non-Equilibrium Thermodynamics　has recently expanded its scope to place new emphasis on theoretical and experimental investigations of non-equilibrium phenomena in thermophysical, chemical, biochemical and abstract model systems of engineering relevance. We are therefore pleased to invite submissions which present newly observed non-equilibrium phenomena, analytic or fuzzy models for their interpretation, or new methods for their description.