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Title: Thermo-mechanical response FEM simulation of ceramic refractories undergoing severe temperature variations
Authors: Papathanasiou, TK
Dal Corso, F
Piccolroaz, A
Keywords: Thermal Stresses;Rerfactory Ceramics;Thermal Shock;Finite Elements
Issue Date: 2016
Publisher: Elsevier
Citation: Journal of the European Ceramic Society, 36 (9): pp. 2329 - 2340, (2016)
Abstract: The development of thermal stresses inside refractory ceramics experiencing severe thermal shock is studied. The present analysis departs from the linear theory of thermal stresses as it accounts for temperature dependent thermal and mechanical material properties. Radiation surface heat exchange between the refractory component and its surroundings is included. A Finite Element Procedure is presented and a MATLAB code is developed. The nonlinear heat equation is solved for the temperature field and this solution is subsequently used in order to determine the stress field evolution. The finite element code is validated and used for the thermal shock estimation of a refractory brick. Material properties corresponding to Al2O3 are selected. A thermal cycle consisting of a heating stage followed by cooling down is simulated. The results are compared with those predicted by the linear thermal stresses theory and significant deviations are observed for the examined values of the Biot number.
ISSN: 0955-2219
Appears in Collections:Dept of Electronic and Computer Engineering Research Papers

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