Probabilistic approach for analysis of strength of ceramics with different porous structure based on movable cellular automaton modeling

doi:10.1016/j.prostr.2016.06.342

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DOI Доступ к ресурсу на сайте издателя			10.1016/j.prostr.2016.06.342

#керамика

#метод подвижных клеточных автоматов

#пористая структура

#Вейбулла распределение

Title: Probabilistic approach for analysis of strength of ceramics with different porous structure based on movable cellular automaton modeling
Creator: Smolin, Alexey Yu.
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Smolin, Igor Yu.
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Smolina, I. Yu.
Date: 2016
DOI: 10.1016/j.prostr.2016.06.342
Description: Movable cellular automaton method which is a computational method of particle mechanics is applied to simulating uniaxial compression of 3D porous ceramic specimens. Pores were considered explicitly by removing automata selected randomly from the original fcc packing. Distribution of pores in space, their size and the total fraction were varied. For each values of porosity there were generated several represented specimens with individual pore position in space. The resulting values of elastic modulus and strength of the specimens were scattered and well described by the Weibull distribution. We showed that to reveal dependence of the elastic and strength properties on porosity it is much better to consider not average of the values for the specimens of the same porosity, but the mathematical expectation of the corresponding Weibull distribution. It is shown that relation between mechanical properties of the material and its porosity depends significantly on pore structure. Namely, percolation transition from closed porosity to interconnected pores strongly manifests itself on strength dependence on porosity. Thus, the curve of strength versus porosity fits different equations for different kind of pore structure. Composite ceramics which pores are filled by plastic filler shows the similar behavior.

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collection(s): Физико-технический факультет
Identifier: смотреть в электронном каталоге НБ ТГУ
Type: статьи в журналах
Source: Procedia structural integrity. 2016. Vol. 2. P. 2742-2749
Language: eng

Created: 26-03-2018

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Физико-технический факультет Probabilistic approach for analysis of strength of ceramics with different porous structure based on movable cellular automaton modeling