Showing papers in "Journal of Sound and Vibration in 2010"

TL;DR: In this paper, the potential use of transverse galloping in order to obtain energy was explored analytically, and the influence of cross-section geometry and mechanical properties in the energy conversion factor was investigated.

TL;DR: In this article, a nonlinear energy harvester that uses magnetic interactions to create an inertial generator with a bistable potential well was investigated, and both theoretical and experimental tests show that the potential well escape phenomenon can be used to broaden the frequency response of an EH generator.

TL;DR: In this article, a simple approach is presented to solve natural frequencies of free vibration of axially functionally graded beams with non-uniform cross-section for various end supports including simply supported, clamped, and free ends.

TL;DR: In this paper, a vibration isolator with high-static-low-dynamic stiffness (HSLDS) properties is presented. But the authors focus on the analytical properties of the isolator, and the analytical model for each of the springs is established and tuning parameters are identified.

TL;DR: In this article, a nonlinear time-varying dynamic model is proposed to predict modulation sidebands of planetary gear sets with gear manufacturing errors and a rotating carrier, and the model is further combined with a previously developed model that accounts for amplitude modulations due to rotation of the carrier to predict acceleration spectra at a fixed position in the planetary transmission housing.

TL;DR: In this paper, a general and fully three dimensional multi-body-finite element-boundary element model, formulated in the time domain to predict vibrations due to train passage at the vehicle, the track and the free field, is presented.

TL;DR: In this article, the authors investigate the response of linear energy harvesters to Gaussian white and colored excitations and show that the expected value of the output power is not even a function of the nonlinearity.

TL;DR: In this article, a mobile-host based wireless energy transmission system is proposed to provide both power and data interrogation commands to sensor nodes for structural health monitoring (SHM) applications.

TL;DR: In this paper, the vibrational properties of carbon nanotube-reinforced composites were studied by employing an equivalent continuum model based on the Eshelby-Mori-Tanaka approach.

TL;DR: This paper investigates how a temperature compensation method can be used to reduce the number of signals required in the database, and the strong influence of signal complexity and mode purity on the effectiveness of this method is shown.

TL;DR: In this paper, the authors deal with the optimization of piezoelectric actuators and sensors locations for active vibration control, and two modified optimization criteria are used, ensuring good observability or controllability of the structure, and considering residual modes to limit the spillover effect.

TL;DR: In this article, a fast beamforming method is proposed that can be used in conjunction with a phased microphone array in applications with focus on the correct quantitative estimation of acoustic source spectra.

TL;DR: In this paper, a beamforming-based acoustic emission (AE) analysis was proposed for field applications on large plate-like reinforced concrete structures, such as walls and bridge decks.

TL;DR: In this paper, the authors describe an experimental investigation of the statistical properties of turbulent velocity fluctuations in an axisymmetric jet and focus on those properties that are relevant to the prediction of noise.

TL;DR: In this paper, the governing equations of coupled thermoelastic problems are established for out-of-plane vibration of a circular plate and the analytical expression for thermo-elastic damping is obtained.

TL;DR: In this paper, the design, modeling and analysis of a low frequency space frame platform for passive and active attenuation of micro-vibrations is presented. And the authors have shown using simulation that a control strategy using optimal control is effective for vibration suppression under a wide variety of loading conditions.

TL;DR: In this article, a fault growth parameter based on the amplitude of wavelet transform is proposed to evaluate gear fault advancement quantitatively, and the effectiveness of the proposed fault indicator is demonstrated using a full lifetime vibration data history obtained under sinusoidal varying load.

TL;DR: In this paper, the natural frequencies of planar vibration of axially moving beams are numerically investigated in the supercritical ranges, where the straight equilibrium configuration becomes unstable and bifurcate in multiple equilibrium positions.

TL;DR: In this paper, the authors measured the leading edge noise of three airfoils immersed in turbulence and found that the airfoil response function was centered on zero angle of attack (AOA), rather than the zero lift AOA (ZOA).

TL;DR: In this paper, the effects of a flexible fixture from an experimentally obtained modal model are removed from a structure, which can be viewed as an extension to the approach where rigid masses are removed.

TL;DR: In this paper, the free vibrational characteristics of isotropic coupled conical-cylindrical shells are analyzed using two different methods: a wave solution and a power series solution.

TL;DR: In this paper, a new method for detecting a multi-cracked beam-like structure subjected to a moving vehicle is presented, where the dynamic response of the bridge-vehicle system is measured directly from the moving vehicle.

TL;DR: In this paper, a robust adaptive boundary control for an axially moving string that shows nonlinear behavior resulting from spatially varying tension is investigated, where a hydraulic actuator equipped with a damper is used as the control actuator at the right boundary of the string.

TL;DR: In this paper, a wake oscillator model that conforms to both the free and forced vibration experiments is proposed, and the model is enhanced by introducing frequency dependent coupling, which allows reproduction of the measured frequency dependence of the fluid force on the cylinder.

TL;DR: In this article, a single foot force model for the vertical component of walking-induced force is developed, avoiding the phase angle inaccessibility of the continuous walking force, and an optimization procedure, based on the minimization of maximum root-mean-square (rms) acceleration of footbridge, is introduced to determine the optimal design parameters of MTMD system.

TL;DR: In this article, an analytic approximate technique, namely optimal homotopy asymptotic method (OHAM), is employed to solve nonlinear oscillations of a particle which moves on a rotating parabola.

TL;DR: In this paper, a numerical model of a plate incorporating an acoustic black hole wedge is presented, with predictions for vibration amplitudes. But the model is limited to the case where the sharp edges of such plates are always truncated before x = 0.

TL;DR: In this article, the authors investigated the properties and vibration responses of a partially treated multi-layer magnetorheological (MR) fluid beam and formulated the governing equations of a multi-layered MR beam using finite element method and Ritz formulation.

TL;DR: In this paper, an experimental set-up has been developed using the air inside a tube as the acoustic linear system, a thin circular visco-elastic membrane as an essentially cubic oscillator and the air outside a box as a weak coupling between those two elements.