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Period of vibrations of framed structures
Materials and Structures, 2005A partir des vibrations libres d'une console, une relation explicite est deduite pour evaluer la periode fondamentale de vibration des structures en portiques en fonction des deformations de flexion et de cisaillement. Pour verifier la validite de cette relation, des structures en portiques etagees (rigides, semi-rigides et flexibles) en beton arme et ...
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Natural Periods of Vibration of Buildings
Journal of the Engineering Mechanics Division, 1963The measured periods of vibrations of a large number of buildings are used to compare the merits of existing formulas and of equations derived using a rational approach. It is concluded that no single, simple, empirical equation will give reasonably accurate estimates for the periods of buildings having shear wall characteristics.
G.W. Housner, A.G. Brady
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On the vibrations of mono-coupled periodic and near-periodic structures
Journal of Sound and Vibration, 1989Abstract The fundamental equations governing the linear, oscillatory dynamics of structures consisting of repeated similar sub-structures are examined. The systems considered are mono-coupled and undamped, and they are examined by using wave, modal, receptance and finite element (F.E.) analyses.
A.J. Keane, W.G. Price
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Nonstationary Vibrations of Plates Under Periodic Loading
International Applied Mechanics, 2000The authors consider an equation of plate oscillations with allowance for damping proportional to the bending velocity in the form \[ \nabla^2\nabla^2W + \frac{q}{D}\,\frac{\partial^2W}{\partial t^2} + n\, \frac{\partial W}{\partial t} = \frac{q_0}{D}\,\cos \omega t.\tag{1} \] The authors solve the problem on nonstationary excitation of a thin circular
Lobanov, L. M. +2 more
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Vibration of periodic truss structures
The Journal of the Acoustical Society of America, 1996Recent trends in underwater vehicle design suggest the use of truss-like structures, connected to the hull by a limited number of attachment points, to support vibrating machinery. This work investigates the dynamic behavior of a set of spatially periodic trusses of practical interest.
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Periodic Motion: Vibration and Oscillation
2002Much of the motion we will discuss in connection with sound and music will be of a special type in which something will move “back and forth.” In other words, if you were to anchor yourself at a given point in space, you would see the “something” return to that spatial point from time to time, with regularity. The motion covers a sequence of locations,
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Period of vibration of axially vibrating truly nonlinear rod
Journal of Sound and Vibration, 2016Abstract In this paper the axial vibration of a muscle whose fibers are parallel to the direction of muscle compression is investigated. The model is a clamped-free rod with a strongly nonlinear elastic property. Axial vibration is described by a nonlinear partial differential equation.
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Vibration Isolation with periodic structures
2016Vibrations are undesirable and cause many problems in engineering. Among the many techniques to reduce vibrations, phononic crystals and elastic metamaterials, that have periodic variations in geometry or material properties, have the potential to attenuate vibrations over a large range of frequencies.
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Symplectic Geometry And Vibrating Systems With Periodic Coefficients
Journal of Sound and Vibration, 1994Abstract The vibration of discretized, rotating systems is discussed in the framework of symplectic geometry. Attention is focused on the manner in which the matrix equations of motion transform under a linear, differentiable change of co-ordinates; e.g., from a rotating frame to a stationary frame of reference.
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