Zobrazeno 1 - 10
of 41
pro vyhledávání: '"V. M. Kulik"'
Autor:
V. M. Kulik
Publikováno v:
Journal of Applied Mechanics and Technical Physics. 63:884-890
Publikováno v:
Thermophysics and Aeromechanics. 27:181-192
The results of a parametric study of hydrodynamic stability in linear formulation of the Blasius boundary layer stability over two-layer compliant coatings are presented. In the calculations, experimental data for real silicon rubbers of several type
Autor:
V. M. Kulik
Publikováno v:
Thermophysics and Aeromechanics. 27:71-80
Deformations of a compliant coating in a turbulent flow, measured previously and calculated in this work, are compared. The calculated spectral density of coating deformations at low frequencies (25–250 Hz) turned out to be almost two orders of mag
Publikováno v:
Journal of Applied Mechanics and Technical Physics. 60:620-630
Results of studying stability of the Blasius boundary layer on a two-layer compliant coating in the linear formulation are reported. The computations are based on experimental parameters of viscoelasticity of a real coating, which reveal the dependen
Autor:
Andrey V. Boiko, V. M. Kulik
Publikováno v:
Journal of Applied Mechanics and Technical Physics. 59:874-885
The main methods used to measure viscoelastic properties of materials in a wide range of frequencies from 10−4 to 106 Hz are reviewed. It is demonstrated that the accuracy of many experimental methods can be increased by taking into account the for
Publikováno v:
Thermophysics and Aeromechanics. 25:515-524
The possibility of drag reduction due to compliant coatings of viscoelastic silicone rubbers has been tested experimentally. For this purpose, a series of single-layer coatings of various thicknesses was made of a homogeneous material. The experiment
Autor:
A. V. Boiko, V. M. Kulik
Publikováno v:
Measurement Techniques. 60:37-41
Calculation results are presented for the form factor of a flat ring in a linear formulation of the theory of elasticity. The form factor accounts for the influence of the sample dimensions and Poisson’s ratio on the modulus of elasticity being mea
Autor:
V. M. Kulik
Publikováno v:
Thermophysics and Aeromechanics. 23:487-498
The algorithm for calculation of dynamic compliance of multilayer coatings was developed. The compliance modulus and phase lag of coating surface motion vs. the current pressure depend on viscoelastic properties of materials, ratio of wavelength to l
Autor:
V. M. Kulik, A. V. Boiko
Publikováno v:
Measurement Techniques. 58:603-607
We present the results of the calculation of the form factor of a hollow cylindrical sample under shear deformation, taking into account the influence of the sample size and Poisson’s ratio on the actual measured shear modulus.
Autor:
V. M. Kulik
Publikováno v:
Journal of Applied Mechanics and Technical Physics. 55:1031-1036
A two-dimensional problem of deformation of a layer of a viscoelastic material glued to a solid base by a traveling wave of shear stress is solved. Analytical expressions for two shear compliance components corresponding to two surface displacement c