The influence of plastic properties of the surroundings on the interaction process of the “cylindrical body – External medium” system
Ochiq kirish: yoʻq
Annotatsiya
The non-stationary shear interaction of a cylindrical body with the surrounding is discussed in the article. A cylindrical body is considered elastic, and the surrounding medium is modelled as an elastoplastic medium. The interaction conditions on the contact surface are taken in the form of Coulomb friction. The two-dimensional problem is numerically solved by the finite difference method. Based on the results of calculations, the mechanism of the deformation energy redistribution and the formation of friction forces with a change in the direction of their action, as well as the energy redistribution in the near-contact layer of the external medium with a cylindrical body, is shown. An increase in the wave parameters in a cylindrical body and a significant violation of the uniformity of deformation of the external medium are revealed. The influence of the plastic properties of the surrounding medium in the contact surface on the process of interaction of a cylindrical body with the medium is determined. Plastic strain of external medium is observed in particles close to the cylindrical body, which indicates the existence of a near-contact layer of the external medium during interaction; the plastic properties of the medium lead to a decrease in the amplitude of the maximum stress in the particles of a cylindrical body.
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