Determinative ratios of a rheological model of a discrete medium with a variable angle of internal friction
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Дата
2020
Автори
Dorofeyev, O.A.
Kovtun, V.V.
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Назва тому
Видавець
Khmelnytskyi National University
Анотація
The article deals with determining ratios of a rheological model of a discrete medium with a variable
angle of internal friction, which reflect the characteristic features of deformation of a discrete material: the
influence of internal Coulomb friction and the manifestation of dilatancy at all stages from the beginning of
loading to the onset of the limit state.
The relations are formulated in the form adopted in the theory of plastic flow of material with a variable
flow surface. This allowed us to use a well-tested apparatus of the theory of rigidity of a solid body to describe
the process of deformation of a discrete material.
To formulate the relations, new concepts of stresses and strains occurring on special conjugate planes,
which are convenient for describing the deformation of a discrete material, have been introduced.
The values of its variable parameters necessary for the use of the model in the engineering calculations
are proposed to determine by the results of special laboratory tests of macro-samples of a specific material for
biaxial compression in conditions of flat deformation.
Опис
Ключові слова
discrete environment, internal coulomb friction, dilatation
Бібліографічний опис
Dorofeyev O. A. Determinative ratios of a rheological model of a discrete medium with a variable angle of internal friction / O. A. Dorofeyev, V. V. Kovtun // Problems of Tribology. – 2020. – Vol. 25, No 1/95. – P. 69-77.