Browsing by Author "Brekelmans, W. A. M."

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Citation Count: 19
Modeling thermal shock damage in refractory materials via direct numerical simulation (DNS)
(Elsevier Sci Ltd, 2010) Özdemir, İzzet; Brekelmans, W. A. M.; Geers, M. G. D.; Manufacturing Engineering
In this paper, a computational investigation on thermo-mechanically induced damage in refractory materials resulting from severe thermal shock conditions is presented. On the basis of an idealized two-phase material system. molten aluminium thermal shock tests' are computationally modeled by means of direct numerical simulations (DNS) The interfacial and bulk damage evolution within the material arc described by Merino-mechanical cohesive zones and continuum damage mechanics (CDM), respectively Reported experimental results' are used to identify the parameters of the model Furthermore, a parametric study is carried out to investigate the relative significance of various microstructure parameters in the context of thermal shock response. (C) 2009 Elsevier Ltd All rights reserved
Citation Count: 56
A Thermo-Mechanical Cohesive Zone Model
(Springer, 2010) Ozdemir, I.; Özdemir, İzzet; Brekelmans, W. A. M.; Geers, M. G. D.; Manufacturing Engineering
In this paper, a cohesive zone formulation that is suitable for the thermo-mechanical analysis of heterogeneous solids and structural systems with contacting/interacting components, is presented. Well established traction-opening relations are adopted and combined with micromechanically motivated heat flux-opening relations reflecting the evolving heat transfer through the interfaces. The finite element approach for a coupled analysis within an operator-split solution framework is presented and demonstrated with an example problem.