Vibration Damping
Mostrando 13-24 de 73 artigos, teses e dissertações.
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13. Parametric Study of Stay Cables of a Bridge Under Simulated Spatially Correlated Turbulent Wind
Abstract The main objective of this work is to carry out a parametric study of stay cables of a bridge under simulated spatially correlated buffeting forces. This vibration mechanism is simulated with an Autoregressive and Moving Average (ARMA) model, and applied to mathematical models of the stay cables of the tallest cable-stayed bridge in Mexico. The use
Lat. Am. j. solids struct.. Publicado em: 2016-08
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14. Kelvin Viscoelasticity and Lagrange Multipliers Applied to the Simulation of Nonlinear Structural Vibration Control
Abstract This study proposes a new pure numerical way to model mass / spring / damper devices to control the vibration of truss structures developing large displacements. It avoids the solution of local differential equations present in traditional convolution approaches to solve viscoelasticity. The structure is modeled by the geometrically exact Finite Ele
Lat. Am. j. solids struct.. Publicado em: 2016-05
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15. Theory of Weightless Sagging Elasto-Flexible Cables
Abstract In this Paper, a theory of single sagging planer weightless elasto-flexible cables is proposed. In reference to the instantaneous natural state, hypoelastic rate- type constitutive equations and third-order nonlinear differential equations of planer motion for massless cables with nodal masses are derived. New concepts like configurational complemen
Lat. Am. j. solids struct.. Publicado em: 2016-01
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16. Vibration and Energy Dissipation of Nanocomposite Laminates for Below Ballistic Impact Loading
Abstract Composite laminates are made of glass woven roving mats of 610gsm, epoxy resin and nano clay which are subjected to projectile impact. Nano clay dispersion is varied from 1% to 5%. Impact tests are conducted in a gas gun setup with a spherical nose cylindrical projectile of diameter 9.5 mm of mass 7.6 g. The energy absorbed by the laminates when sub
Lat. Am. j. solids struct.. Publicado em: 2015-12
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17. A new FEM procedure for transverse and longitudinal vibration analysis of thin rectangular plates subjected to a variable velocity moving load along an arbitrary trajectory
A combined plate element is presented for the analysis of transverse and longitudinal vibrations of a thin plate which carries a load moving along an arbitrary trajectory with variable velocity. Depending on the acceleration of the point load on its trajectory on the plate surface, the combined element, which is a combination of the 24 DOF plate element and
Lat. Am. j. solids struct.. Publicado em: 2015-08
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18. Vibration of gold nano beam in context of two-temperature generalized thermoelasticity subjected to laser pulse
In the present work, the model of vibration of gold nano- beam induced by laser pulse heating is developed in the context of two-temperature generalized thermoelasticity and non-Fourier heat conduction. The analytic solution has been derived in the Laplace transform domain. The inverse Laplace transform has been calculated numerically and the numerical resul
Lat. Am. j. solids struct.. Publicado em: 2014
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19. Dynamic response of low frequency Profiled Steel Sheet Dry Board (PSSDB) floor system
Slender structural floors could experience irritating vibration problems due to human walking load and so, vibration acceptability of such floors is an essential subject in addition to the usual strength criterion. This paper focuses on the dynamic response of a lightweight composite structural system known as Profiled Steel Sheet Dry Board (PSSDB) to evalua
Lat. Am. j. solids struct.. Publicado em: 2013-11
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20. Finite element analysis of high modal dynamic responses of a composite floor subjected to human motion under passive live load
Light weight and long span composite floors are common place in modern construction. A critical consequence of this application is undesired vibration which may cause excessive discomfort to occupants. This work investigates the composite floor vibration behavior of an existing building based on a comprehensive study of high modal dynamic responses, the rang
Lat. Am. j. solids struct.. Publicado em: 2013-05
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21. Controle ativo de vibrações em estruturas flexíveis com incertezas paramétricas / Active vibration control of flexible structures with parametric uncertainties
The aim of this dissertation is to study the H-infinity robust control techniques for linear dynamic systems with parametric uncertainties. The finite element method was employed to find the model of the flexible structure. When dealing with the model, parametric uncertainties were considered for natural frequencies and for damping of the structure. The para
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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22. Experimental vibration analysis for a 3D scaled model of a three-floor steel structure
In this paper we present an experimental study of a three dimensional physical model of a three-floor structure subjected to forced vibrations by imposing displacements in its support. The aim of this work is to analyze the behavior of the building when a dynamic vibration absorber (DVA) is acting. An analytic simplified analysis and a numerical study are de
Lat. Am. j. solids struct.. Publicado em: 2012-10
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23. A procedure for the parametric identification of viscoelastic dampers accounting for preload
Passive vibration isolators are usually made of viscoelastic materials. These materials have non-linear characteristics that change their dynamical properties with temperature, frequency and strain level. The vibration isolator's mathematical modeling and optimal design require the prior knowledge of the stiffness and damping of the applied viscoelastic mate
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2012-06
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24. Dynamic response of low frequency Profiled Steel Sheet Dry Board with Concrete infill (PSSDBC) floor system under human walking load
This paper investigates the dynamic response of a composite structural system known as Profiled Steel Sheet Dry Board with Concrete infill (PSSDBC) to evaluate its vibration serviceability under human walking load. For this point, thirteen (13) PSSDBC panels in the category of Low Frequency Floor (LFF) were developed using Finite Element Method (FEM). The na
Latin American Journal of Solids and Structures. Publicado em: 2012