Showing papers in "Journal of Sound and Vibration in 2000"

TL;DR: In this paper, a denoising method based on wavelet analysis is applied to feature extraction for mechanical vibration signals, which is an advanced version of the famous soft thresholding denoizing method proposed by Donoho and Johnstone.

TL;DR: In this paper, a model-dependent method with piezoelectric sensor and actuator incorporated into composite structures is proposed for on-line damage detection and health-monitoring on composite structures.

TL;DR: The concept of discordancy from the statistical discipline of outlier analysis is used to signal deviance from the norm in a statistical method for damage detection.

TL;DR: In this paper, it is shown that large dynamic amplifications appear in the dynamic response of the rail/embankment/ground system as the train speed approaches an apparently critical value.

TL;DR: In this paper, the dynamic response of a spur gear pair is investigated using a finite element/contact mechanics model, which offers significant advantages for dynamic gear analyses and can be used to reveal complex non-linear phenomena.

TL;DR: In this article, the dynamics of a gear-pair system involving backlash and time-dependent mesh stiffness are investigated, where the system is under the action of external excitation, caused by torsional moments and gear geometry errors.

TL;DR: In this paper, a simple and unified approach for the vibration analysis of a generally supported beam is presented, where the flexural displacement of the beam is sought as the linear combination of a Fourier series and an auxiliary polynomial function.

TL;DR: In this article, the authors developed simple and accurate elastic force models that can be used in the absolute nodal co-ordinate formulation for the analysis of two-dimensional beams, which can account for the coupling between bending and axial deformations.

TL;DR: In this article, a tunable solid-state piezoelectric vibration absorber and an active tuning method were developed and demonstrated, where the effective stiffnesses of these elements were adjusted electrically, using a passive capacitive shunt circuit, to tune the resonance frequency of the device.

TL;DR: In this paper, the authors considered the discrete inverse problem in acoustics, where a number of acoustic sources are located at known spatial positions and the acoustic pressure is measured at a many of spatial positions in the radiated field.

TL;DR: Particle impact damping (PID) is a means for achieving high structural damping by the use of a particle-filled enclosure attached to the structure in a region of high displacements.

TL;DR: A review of theoretical models that have been developed to predict these phenomena is given in this article, where the authors consider three main categories of wheel/rail noise: rolling noise, impact noise, and squeal noise.

TL;DR: In this article, the effect of radial internal clearance of the ball bearing on the dynamic response of the rotor is studied and the system equations have been numerically integrated, the results have been validated with harmonic balance alternating frequency time domain method.

TL;DR: In this article, a two-dimensional formulation of the Ffowcs Williams and Hawkings equation in the frequency domain is presented, which is capable of predicting the farfield noise from non-linear nearfield flow quantities.

TL;DR: In this article, the authors used Reddy's third order plate theory to study buckling and steady state vibrations of a simply supported functionally gradient isotropic polygonal plate resting on a Winkler-Pasternak elastic foundation and subjected to uniform inplane hydrostatic loads.

TL;DR: A survey of simple, flexible structural elements subjected to non-conservative follower loads, such as those caused by the thrust of rocket and jet engines, and by dry friction in automotive disk-and drum-brake systems, is presented in this paper.

TL;DR: In this paper, a first order sandwich plate theory is applied to obtain the fundamental frequencies of sandwich laminates in cylindrical bending and for the simply supported case, and the results suggest that the dynamic performance of a sandwich structure could be significantly improved with a proper design of the unit cell shape of the honeycomb.

TL;DR: In this article, the dynamic stiffness matrix of a uniform rotating Bernoulli-Euler beam is derived using the Frobenius method of solution in power series, which includes the presence of an axial force at the outboard end of the beam in addition to the usual centrifugal force arising from the rotational motion.

TL;DR: In this article, the effect of planet phasing to suppress planetary gear vibration in certain harmonics of the mesh frequency is examined based on the physical forces acting at the sun-planet and ring-planet meshes.

TL;DR: In this article, the free vibration analysis of two simply supported beams continuously joined by a Winkler elastic layer is presented, where the motion of the system is described by a homogeneous set of two partial differential equations, which is solved by using the classical Bernoulli-Fourier method.

TL;DR: In this article, a novel procedure is developed for the identification of linear discrete models of dynamical systems from noisy data based on a representation of the governing differential equations with respect to a wavelet basis, and the formulation of an inverse algebraic problem in the associated subspace.

TL;DR: In this article, a non-linear dynamic analysis of a horizontal rigid rotor having unbalance and supported on ball bearings has been done and the results show the appearance of instability and chaos in the dynamic response as the speed of the rotor-bearing system is changed.

TL;DR: In this paper, the vibrational response to harmonic force of a cantilever beam with cracks of different size and location is analyzed using this "harmonic balance" approach and the results are compared with those obtained through numerical integration.

TL;DR: In this paper, two regularization methods, Tikhonov regularization and singular value discarding, are used to improve the accuracy of reconstruction of acoustic source strength by inverse techniques.

TL;DR: In this paper, an exact method for solving the vibration of a double-beam system subject to harmonic excitation is presented, which involves a simple change of variables and modal analysis to decouple and to solve the governing differential equations respectively.

TL;DR: In this article, the results of a finite element analysis of a system may be post-processed to form energy flow models, yielding time and, perhaps, frequency average subsystem energies as well as input and dissipated powers.

TL;DR: In this article, the Euler-Bernoulli model is used to analyze the surface vibration of a 2D elastic layer generated by a point load moving uniformly along a beam, which is located inside the layer.

TL;DR: In this paper, a generalization of geometrically linear shear deformation theory for multilayered anisotropic shells of general shape is presented, which includes the effects of shear deformations and rotary inertia as well as initial curvature.

TL;DR: In this paper, the dynamic behavior of a multi-span continuous beam traversed by a moving mass at a constant velocity is investigated, in which it is assumed that each span of the continuous beam obeys uniform Euler-Bernoulli beam theory.