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Steady state heat transfer in microcracked media

Rangasamy Mahendren, Sharan Raj and Welemane, Hélène and Dalverny, Olivier and Tongne, Amèvi Steady state heat transfer in microcracked media. (2020) In: Congrès Français de Mécanique, 26 August 2019 - 30 August 2019 (Brest, France).

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Official URL: https://doi.org/10.1051/meca/2020034

Abstract

Material behaviour is often affected by the heterogeneities existing at the microscopic level. Especially the presence of cracks, voids, etc collectively known as defects, can play a major role in their overall response. Homogenization can be used to study the influence of these heterogeneities and also to estimate the effective properties of a given material. Several research works have been dedicated to determine the elastic behaviour of a microcracked media. Yet, thermal properties are not investigated as much. Moreover, the question of unilateral effect (opening/closing of cracks) still remains an important issue. So, this paper aims to provide the effective thermal conductivity of a microcracked media with arbitrarily orientated cracks, either open or closed. With the help of Eshelby-like approach, homogenization schemes (dilute and Mori-Tanaka) are developed to provide the closed-form expression. In addition, numerical simulations based on Finite Element Modelling are also performed to validate and analyze the obtained results.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-03103950
Audience (conference):National conference proceedings
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Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
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Deposited On:10 Dec 2020 11:07

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