Electric-Thermo-Mechanical Analysis of Joule Heating in Dilatometric Specimens

IF 1.2 4区工程技术 Q3 ENGINEERING, MECHANICAL

Strojniski Vestnik-Journal of Mechanical Engineering Pub Date : 2017-09-14 DOI:10.5545/SV-JME.2017.4320

M. Herrejón-Escutia, G. Solorio‐Diaz, H. Vergara-Hernández, E. López-Martínez, G. M. Chávez-Campos, O. Vázquez–Gómez

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引用次数: 6

Abstract

A mathematical model of Joule heating was developed for an AISI 304 stainless steel in a hollow cylinder dilatometric specimen. The model was developed by means of creating a balance of energy by coupling the generation term due to the Joule heating and the thermal expansion of the specimen. A Newtonian heating system was assumed for a volume element, and it was resolved by means of the finite differences method, generating its own computer code in the Scilab free-license software. The model considers the thermophysical and electrical properties of steel, depending on the temperature. Thermal interactions at the boundary and the linear thermal expansion coefficient were determined by solving the inverse heat conduction problem (IHCP) using the thermal profile and thermal expansion measured experimentally by means of a direct heating device. The model was validated by comparing the thermal response and experimental thermal expansion with simulated responses for different heating rates.

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膨胀试样焦耳加热的电-热-力学分析

建立了AISI 304不锈钢在空心圆柱体膨胀试样中焦耳加热的数学模型。该模型是通过耦合焦耳加热和试样热膨胀产生的产生项来创造能量平衡的方法建立的。假设一个牛顿加热系统为体积元，用有限差分法求解，并在Scilab自由许可软件中生成了自己的计算机代码。该模型考虑了随温度变化的钢的热物理和电学性能。利用直接加热装置实验测得的热廓线和热膨胀，通过求解反热传导问题，确定了边界处的热相互作用和线性热膨胀系数。通过对比不同升温速率下的热膨胀响应、实验热膨胀响应和模拟热膨胀响应，对模型进行了验证。

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来源期刊

Strojniski Vestnik-Journal of Mechanical Engineering 工程技术-工程：机械

CiteScore

3.00

自引率

17.60%

发文量

审稿时长

4.1 months

期刊介绍： The international journal publishes original and (mini)review articles covering the concepts of materials science, mechanics, kinematics, thermodynamics, energy and environment, mechatronics and robotics, fluid mechanics, tribology, cybernetics, industrial engineering and structural analysis. The journal follows new trends and progress proven practice in the mechanical engineering and also in the closely related sciences as are electrical, civil and process engineering, medicine, microbiology, ecology, agriculture, transport systems, aviation, and others, thus creating a unique forum for interdisciplinary or multidisciplinary dialogue.