Theoretical investigation of influence of pore pressure on mechanical response of gas-filled permeable materials

Sergey Astafurov, Evgeny Shilko, Andrey Dimaki, Sergey Psakhie

Результат исследования: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

The paper is devoted to theoretical investigation of the influence of gas pore pressure on the characteristics of mechanical response of gas-filled permeable materials and media. Investigation was based on computer-aided simulation by hybrid cellular automaton method. Mechanical response of the model gas-filled samples of young brown coal under unconfined (in absence of constraint) and constrained conditions was investigated. The simulation results showed that increase of the pore pressure of the gas acting on the solid skeleton leads to decrease in materials strength. This is due to the fact that the gas pressure makes an additional contribution to integral pressure acting in volume of the loaded medium. Consequences of this are earlier beginning of plastic deformation and fracture of the material. It should be noted that in the constrained conditions decreasing of material strength with increasing gas pore pressure has more pronounced nonlinear character, in comparison with similar tests for unconfined samples. This is due to the fact that loading of constrained material is accompanied by its massive cracking and, consequently, by a grater decrease of the strength characteristics of the medium.

Язык оригиналаАнглийский
Заголовок главной публикацииAIP Conference Proceedings
ИздательAmerican Institute of Physics Inc.
Страницы15-18
Количество страниц4
Том1623
ISBN (печатная версия)9780735412606
DOI
Статус публикацииОпубликовано - 2014
СобытиеInternational Conference on Physical Mesomechanics of Multilevel Systems 2014 - Tomsk, Российская Федерация
Длительность: 3 сен 20145 сен 2014

Другое

ДругоеInternational Conference on Physical Mesomechanics of Multilevel Systems 2014
СтранаРоссийская Федерация
ГородTomsk
Период3.9.145.9.14

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Цитировать

Astafurov, S., Shilko, E., Dimaki, A., & Psakhie, S. (2014). Theoretical investigation of influence of pore pressure on mechanical response of gas-filled permeable materials. В AIP Conference Proceedings (Том 1623, стр. 15-18). American Institute of Physics Inc.. https://doi.org/10.1063/1.4898871