Zobrazeno 1 - 10
of 79
pro vyhledávání: '"P. Z. Lugovoi"'
Publikováno v:
International Applied Mechanics. 56:590-598
The equations of vibrations of a stringer-reinforced spherical sandwich shell under unsteady loading are obtained. In analyzing the elements of the elastic structure, the models of the Timoshenko theory of shells and rods are used. The numerical meth
Publikováno v:
International Applied Mechanics. 56:22-32
A technique for solving dynamic problems of the behavior of compound shell structures (solving the equations of motion subject to appropriate boundary and initial conditions) is developed. The structurally orthotropic model of a three-layer shell str
Publikováno v:
International Applied Mechanics. 55:524-533
We propose a spline-collocation technique for the analysis of the static stress–strain state and the free vibrations of ribbed multilayer orthotropic cylindrical shells with attached masses. Numerical examples are used to test the solution and anal
Publikováno v:
International Applied Mechanics. 55:86-94
The water chemistry and thermal conditions of an operating steam generator (SG) are such that its heat-exchange tubes (HET) and inner surface are contaminated by sludge. The sludge deposits can influence the behavior of the HETs by increasing their m
Publikováno v:
International Applied Mechanics. 54:666-674
The physical and mechanical processes occurring in breaking rock in the required direction with the application of insert plates in a blast hole with nonexplosive breaking compositions (NBC) are studied theoretically in detail. Crack nucleation in th
Publikováno v:
International Applied Mechanics. 53:680-687
A technique for studying the transient process of forced vibrations of a longitudinally and transversely reinforced cylindrical shell under a load with frequency and amplitude varying with time is developed. The discrete arrangement of reinforcing ri
Publikováno v:
International Applied Mechanics. 53:434-443
The problem of the dynamical bending of a drill string rotating in a deep borehole with self-excitation of whirling oscillations of the bit on the well bottom is stated. A mathematical model describing the rolling of a spherical bit over an ellipsoid
Publikováno v:
International Applied Mechanics. 53:173-180
A procedure and software for studying the dynamics of a reinforced cylindrical shell on an elastic foundation are developed. The shell is under local loads distributed over small areas and varying linearly during a short time. The stringers are descr
Publikováno v:
International Applied Mechanics. 52:635-642
The dynamic behavior of a reinforced-concrete containment shell of a nuclear power plant under the combined effect of an internal pressure jump due to a reactor breakdown and seismic load due to a design-basis earthquake is analyzed. The finite-eleme
Publikováno v:
Science and innovation. 12:35-42