Results 11 to 20 of about 17,717 (266)
Steady-state forced vibrations [PDF]
The following concepts are defined: (i) periodic functions possessing an amplitude, (ii) cosine-like functions, (iii) steady-state forced vibrations. The following theorems are proved: I. If, in $\ddot{x} + f(x) = P g(t) P g(t + T)$, $x(0) = X \neq 0$, $0 < P < \infty$, $-\infty < t < + \infty$, $g(t)$ is cosine-like, a necessary condition for the ...
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Calculation methods for plate and beam elements of box-type structure of building [PDF]
The article is devoted to the dynamic calculation of the box-type structure of buildings for seismic resistance, taking into account the spatial work of the box elements under the influence of dynamic impact.
Mirsaidov Mirziyod +2 more
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Fundamental solutions in the full coupled theory of elasticity for solid with double porosity
This paper discusses the full coupled linear theory of elasticity for solids with double porosity. The system of the governing equations is based on the equations of motion, conservation of fluid mass, the constitutive equations and Darcy’s law for ...
M. Svanadze, S. De Cicco
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Due to growing demands on newly developed products concerning their weight, sound emission, etc., advanced materials are introduced in the product designs. The modeling of these materials is an important task, and a very promising approach to capture the
Michael Klanner +2 more
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The purpose of the present paper is to develop the classical potential method in the linear theory of thermoelasticity for materials with a double porosity structure based on the mechanics of materials with voids.
M. Svanadze
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Potential method in the theory of thermoelasticity for materials with triple voids
In the present paper the linear theory of thermoelasticity for isotropic and homogeneous solids with macro-, meso- and microporosity is considered. In this theory the independent variables are the displacement vector field, the changes of the volume ...
M. Svanadze
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Dynamics of Structures, Frames, and Plates with Viscoelastic Dampers or Layers: A Literature Review
The paper is devoted to a review of recent achievements in the field of dynamic analysis of structures and structural elements, such as beams and plates, with embedded viscoelastic (VE) dampers and/or layers.
Roman Lewandowski +3 more
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Investigation of oscillations of platform on isotropic supports excited by a pendulum [PDF]
Within the framework of a flat model, steady-state modes of motion of a system composed of a platform on isotropic elastic-viscous supports, a shaft on a platform, and a pendulum freely mounted on a shaft are investigated.
Filimonikhin Gennadiy +2 more
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AN ULTRASENSITIVE VIBRATING PROBE FOR MEASURING STEADY EXTRACELLULAR CURRENTS [PDF]
We describe a vibrating probe system for measuring relatively steady electrical current densities near individual living cells. It has a signal-to-noise ratio at least 100 times greater than previously available techniques. Thus it can be used to detect current densities as small as 10 nA/cm2 in serum when a 30-µm diameter probe is vibrated at 200 Hz ...
L F, Jaffe, R, Nuccitelli
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Transverse vibrations of cantilever beams: Analytical solutions with general steady-state forcing
Novel theoretical approach for characterization of transverse vibrations of cantilever beams under continuous spatially distributed load is proposed. Four beam theories (Euler–Bernoulli, Euler–Bernoulli with dissipation, shear and shear with dissipation)
D. Gritsenko, J. Xu, R. Paoli
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