000			02464nam a2200361Ia 4500
003			MX-MdCICY
005			20250625162458.0
040			_cCICY
090			_aB-20947
245	1	0	_aRealistic morphological models of weakly to strongly branched pore networks for the computation of effective properties
490	0		_vInternational Journal of Solids and Structures, 275, p.112249, 2023
520	3		_aWe provide a detailed expository report of a new methodology aiming at building a numerical model of the complex pore distribution of porous UO2 ceramics, tunable to real materials, in view of computing their effective thermal behavior. First, based on 2D optical microscopy images, we characterize the material of interest, dedicating a special attention to the porous network because of its major influence on the thermal behavior. Following Meynard et al. (2022), we then propose a simple morphological model combining a Voronoi tessellation and a boolean model, involving a limited number of parameters, from which 3D virtual microstructures (and so 2D cross-sections)can be generated. These parameters are tuned in order to select within our class of models the microstructures that are the most representative of the real ones ; in practice, this optimization process minimizes a cost function based on morphological descriptors computed from the 2D cross-sections. Last, we perform 2D full-field thermal simulations on cross-sections through Representative Volume Elements of both the numerical and the experimental microstructures. We validate our approach by qualitative and quantitative comparisons relative to both global properties and local field statistics.
650	1	4	_aPOROUS SOLIDS
650	1	4	_aPORE NETWORK
650	1	4	_aINTER-GRANULES POROSITY
650	1	4	_aMORPHOLOGICAL DESCRIPTORS
650	1	4	_aVIRTUAL MICROSTRUCTURES GENERATION
650	1	4	_aTHERMAL CONDUCTIVITY
650	1	4	_aHOMOGENIZATION
650	1	4	_aREPRESENTATIVE VOLUME ELEMENT
650	1	4	_aFFT COMPUTATION
650	1	4	_aUO2 CERAMICS
700	1	2	_aMoutin, L.
700	1	2	_aMeynard, J.
700	1	2	_aJosien, M.
700	1	2	_aBornert, M.
700	1	2	_aDuguay, C.
700	1	2	_aAdenot, F.
700	1	2	_aMasson, R.
856	4	0	_uhttps://drive.google.com/file/d/1waCX9nzoI6MywnV_k8VEHMm6_imIfF_E/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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