Results 171 to 180 of about 1,423 (215)

Vibration of Prestressed Periodic Lattice Structures

AIAA Journal, 1981
Equations are developed for vibration of general lattice structures that have repetitive geometry. The method of solution is an extension of a previous paper for buckling of similar structures. The theory is based on representing each member of the structure with the exact dynamic stiffness matrix and taking advantage of the repetitive geometry to ...
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Natural Periods of Vibration of Buildings

Journal of the Engineering Mechanics Division, 1963
The 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 Vibration Absorbers for Periodic Excitation

Dynamic Systems and Control: Volume 1 — Vibration Control; Dynamic Systems; Robotics; Sliding Mode Control; Robust and Nonlinear Control; Automated Modeling; Control of Manufacturing Processes; Precision Control, 1995
Abstract The dynamic vibration absorber is a commonly-used device for reducing the vibrations of a primary system subjected to harmonic excitation. In this paper, the absorber concept is generalized from harmonic to periodic excitation functions.
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Period of vibrations of framed structures

Materials and Structures, 2005
A 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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On the vibrations of mono-coupled periodic and near-periodic structures

Journal of Sound and Vibration, 1989
Abstract 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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Vibration of periodic truss structures

The Journal of the Acoustical Society of America, 1996
Recent 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

2002
Much 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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Vibration Isolation with periodic structures

2016
Vibrations 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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Period of vibration of axially vibrating truly nonlinear rod

Journal of Sound and Vibration, 2016
Abstract 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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Symplectic Geometry And Vibrating Systems With Periodic Coefficients

Journal of Sound and Vibration, 1994
Abstract 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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