Results 261 to 270 of about 124,655 (304)

Steady longitudinal vibrations of inhomogeneous compound plates

Journal of Mathematical Sciences, 1995
We use the perturbation method to solve the problem of steady longitudinal vibrations of compound plates made of materials with variable mechanical characteristics. We study the influence of the degree of inhomogeneity of the properties of the material on the stress state of a plate consisting of two regions.
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Steady‐State Vibration of Subway‐Soil‐Building System

Journal of Engineering Mechanics, 1989
The steady‐state vibration of a subway‐soil‐building system is determined using an appropriate finite element model. The vibration level in the podium block of the building is obtained for two different track support systems: direct fixation and a floating slab.
T. Balendra, K. H. Chua, K. W. Lo, S. L. Lee   +3 more
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On the Steady Streaming Induced by Vibrating Walls

SIAM Journal on Applied Mathematics, 2012
We consider incompressible viscous flows between two transversely vibrating solid walls and construct an asymptotic expansion of solutions of the Navier--Stokes equations in the limit when both the amplitude of the vibration and the thickness of the oscillatory boundary layers (the Stokes layers) are small and have the same order of magnitude.
Konstantin Ilin, Andrey Morgulis
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Effects of Exposure to Localized Vibration on Hand Steadiness

Perceptual and Motor Skills, 1969
32 Ss performed a steadiness task before and again immediately after 3 min. of exposure to localized vibration. The vibratory forces were transmitted to S's performing hand through a specially constructed gripping handle which vibrated at either 60, 80, or 100 cps at a constant amplitude. Each S was exposed to each vibration frequency and also to a no-
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Geometrically nonlinear, steady state vibration of viscoelastic beams

International Journal of Non-Linear Mechanics, 2017
Abstract The problem of geometrically non-linear steady state vibrations of beams excited by harmonic forces is considered in this paper. The beams are made of a viscoelastic material defined by the classic Zener rheological model - the simplest model that takes into account all the basic properties of real viscoelastic materials.
Przemysław Wielentejczyk, Roman Lewandowski   +1 more
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The steady streaming induced by a vibrating cylinder

Journal of Fluid Mechanics, 1975
In this paper we apply the techniques of higher-order boundary-layer theory to study the steady streaming induced in the neighbourhood of a cylinder which vibrates harmonically, perpendicular to its generators, in an unbounded fluid. The theoretical predictions are compared with the results of experiments performed at high streaming Reynolds numbers ...
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Steady-state vibration absorption using undamped linear substructures

The Journal of the Acoustical Society of America, 2007
This study extends the previous applications of linear energy sinks to steady-state vibration absorption. First developed for the absorption of transient vibrations, linear energy sinks also act as effective vibration absorbers under steady-state excitation.
Ilker Murat Koc, Adnan Akay, Antonio Carcaterra   +2 more
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Optimal bounded control of steady-state random vibrations

Probabilistic Engineering Mechanics, 2000
Abstract A SDOF system is considered, which is excited by a white-noise random force. The system's response is controlled by a force of bounded magnitude, with the aim of minimizing integral of the expected response energy over a given period of time. The integral to be minimized satisfies the Hamilton–Jacobi–Bellman (HJB) equation.
M.F. Dimentberg, D.V. Iourtchenko, A.S. Bratus’   +2 more
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Problems of Steady Vibrations in Elasticity

2019
In this chapter, the basic internal and external BVPs of steady vibrations in the linear theory of elasticity for quadruple porosity materials are investigated by means of the potential method and the theory of singular integral equations.
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Effects of vibration on steady flow downstream of a stenosis

Journal of Biomechanics, 1988
A physical model was used to test the effects of vibrations on the position of transition to turbulence (zt) downstream of a constriction. Constrictions were inserted in a length of clear plastic (Tygon) tubing and vibrated. Water was the fluid medium and flow was visualized with India ink. The frequency and velocity of vibration were monitored.
S A, Jones, A, Fronek
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