Thermally induced vibration of photovoltaic honeycomb-based-thermoelectric hybrid device

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2024-11-09 DOI:10.1016/j.tws.2024.112692

C. Liu , C. Ren , S. Liu , W.J. Li , Y.J. Cui , K.F. Wang , B.L. Wang

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Abstract

This paper presents a comprehensive investigation of thermally induced vibration (TIV) of elastically constrained photovoltaic honeycomb-based-thermoelectric hybrid device under space thermal environment. Based on four-variable refined quasi-3D higher-order theory as well as virtual boundary spring technique, the equation of motion of the hybrid device is derived by using Lagrange equation. The nonlinear temperature profile is obtained via finite difference scheme and the TIV responses are solved by employing Newmark approach. The effects of boundary condition, size of honeycomb cell, damping effect, thickness of insulation layer and radius of curvature on TIV of the hybrid device are studied. Results show that the TIV response of the hybrid device can be greatly weakened by replacing the dense thermoelectric leg with honeycomb-based thermoelectric leg. Designing the honeycomb cell as re-entrant architecture possesses a better suppression effect on TIV response. The amplitude of TIV reduces with increasing the thickness-length ratio and decreasing the height-length ratio of honeycomb cell. A larger thickness of insulation layer can weaken the TIV response. The oscillation of TIV response can be eliminated by fabricating hybrid device as circular cylindrical and hyperbolic parabolic shallow shells. The stiffer the boundary conditions, the less prone to TIV behavior of the hybrid device. The introduction of damping effect can suppress TIV response, but it simultaneously causes the occurrence of thermal snap. In general, the research provides several design references to weaken the TIV response of the hybrid device under space heat flux.

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光伏蜂窝热电混合装置的热激振动

本文对空间热环境下弹性约束光伏蜂窝热电混合器件的热激振动进行了全面研究。基于四变量精细化准三维高阶理论和虚拟边界弹簧技术，利用拉格朗日方程推导了混合装置的运动方程。非线性温度分布采用有限差分格式得到，TIV响应采用Newmark方法求解。研究了边界条件、蜂窝单元尺寸、阻尼效应、保温层厚度和曲率半径等因素对混合动力器件TIV的影响。结果表明，用蜂窝状热电腿代替密集热电腿可以大大减弱混合装置的TIV响应。将蜂窝蜂窝设计为重入式结构，对TIV响应具有较好的抑制效果。TIV振幅随蜂窝细胞厚长比的增大和高长比的减小而减小。绝缘层厚度越大，TIV响应越弱。通过制作圆筒形和双曲抛物线型浅壳混合器件，可以消除TIV响应的振荡。边界条件越严格，混合器件越不容易发生TIV行为。阻尼效应的引入可以抑制TIV响应，但同时也会导致热裂的发生。总的来说，该研究为削弱混合装置在空间热流下的TIV响应提供了一些设计参考。

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

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.