An Influence of Normal Stress and Pore Pressure on the Conditions and Dynamics of Shear Crack Propagation in Brittle Solids / E. V. Shilko, S. G. Psakhie, V. L. Popov
Уровень набора: (RuTPU)RU\TPU\network\4816, AIP Conference ProceedingsЯзык: английский.Резюме или реферат: The paper is devoted to the study of the influence of crack-normal stress on the shear strength of the brittle material with initial crack and the geometrical condition of acceleration of dynamically growing crack towards the longitudinal wave speed. We considered elastic-brittle permeable materials with nanoscale pore size. We have shown that pore fluid in nanoporous brittle materials influences mainly the condition of shear crack propagation transition from conventional sub-Rayleigh regime to supershear one. The results of the study make it possible to assess the ability of initial cracks in brittle materials to develop in supershear regime under the condition of confined longitudinal shear..Примечания о наличии в документе библиографии/указателя: [References: 11 tit.].Аудитория: .Тематика: электронный ресурс | труды учёных ТПУ | нормальные напряжения | давление | трещины | хрупкие тела | прочность | нанопористые материалы | продольные сдвиги Ресурсы он-лайн:Щелкните здесь для доступа в онлайнTitle screen
[References: 11 tit.]
The paper is devoted to the study of the influence of crack-normal stress on the shear strength of the brittle material with initial crack and the geometrical condition of acceleration of dynamically growing crack towards the longitudinal wave speed. We considered elastic-brittle permeable materials with nanoscale pore size. We have shown that pore fluid in nanoporous brittle materials influences mainly the condition of shear crack propagation transition from conventional sub-Rayleigh regime to supershear one. The results of the study make it possible to assess the ability of initial cracks in brittle materials to develop in supershear regime under the condition of confined longitudinal shear.
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