Zobrazeno 1 - 10
of 36
pro vyhledávání: '"V. P. Ol'shanskii"'
Publikováno v:
International Applied Mechanics. 55:575-583
The pulsed deformation of a beam with hinged ends and discretely elastically supported span is considered. It is assumed that due to separation of the beam from the support, a one-sided constraint (contact) of the beam with the support arises, when t
Autor:
S O Kharchenko, F M Kharchenko, P Bałdowska-Witos, O Kovalyshyn, V P Ol’Shanskii, A Tomporowski, S Y Кovalyshyn
Publikováno v:
Journal of Physics: Conference Series. 1781:012019
Approximate formulas for calculating the amplitudes of free damped oscillations of the oscillator with a quadratic nonlinear elastic characteristic under the action of a resistance force that is proportional to the square of the velocity are derived
Autor:
S. V. Ol’shanskii, V. P. Ol’shanskii
Publikováno v:
Mechanics of Solids. 50:615-621
TheWKB method is used to construct an approximate analytic solution of the equation of small nonstationary vibrations of the Meshcherskii mathematical pendulum. The versions of linear and nonlinear variation in the pendulum mass are considered. Calcu
Autor:
V. P. Ol’shanskii, S. V. Ol’shanskii
Publikováno v:
Strength of Materials. 45:361-368
A comparison of the results of a calculation of dynamicity coefficient for deflections, obtained by the Cox and Saint-Venant theories, showed them to agree well in a wide range of mass ratios of colliding bodies. Therefore, cumbersome calculations by
Autor:
V. P. Ol’shanskii, S. V. Ol’shanskii
Publikováno v:
International Applied Mechanics. 48:188-194
The reversal of the vertical motion of a spherical particle with variable mass and radius in air flow is described using the analytical solutions of the Cauchy problem. It is shown that a particle with decreasing mass falling against an upward flow s
Publikováno v:
Journal of Engineering Physics and Thermophysics. 84:509-514
Consideration has been given to the dynamics of a vibrofluidized bed of grain mixture on an inclined shaker with a vibration viscosity that is a linear function of the transverse coordinate. The flow-velocity distribution over the cross section of th
Autor:
V. P. Ol’shanskii, S. V. Ol’shanskii
Publikováno v:
Mechanics of Solids. 44:671-676
We show that if the dependence of the drag force on the velocity is quadratic and the time dependence of the radius of a spherical body is linear, then the first integral of the equation of motion can be written out in closed form in terms of Bessel
Autor:
V. P. Ol’shanskii, S. V. Ol’shanskii
Publikováno v:
Journal of Engineering Physics and Thermophysics. 82:728-733
The extreme properties of the vertical fall of a spherical body whose radius decreases with time by the exponential law have been investigated. The conditions under which the fall velocity has a maximum have been found.
Autor:
S. V. Ol’shanskii, V. P. Ol’shanskii
Publikováno v:
International Applied Mechanics. 44:695-702
The paper studies the fall and ascent in air of a spherical body with radius linearly decreasing with time. The first integral of the nonlinear equation of motion is expressed in closed form in terms of Bessel functions on the assumption that the aer
Autor:
S. V. Ol’shanskii, V. P. Ol’shanskii
Publikováno v:
Journal of Engineering Physics and Thermophysics. 80:697-701
A closed analytical solution of a nonlinear differential equation with variable coefficients which describes the vertical motion of an ascending evaporating drop as a material point of variable mass has been constructed in Airy functions. It is shown