Journal of Vibration and Acoustics: Recent submissions
Now showing items 2041-2060 of 3913
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Modeling of Granular Particle Damping Using Multiphase Flow Theory of Gas-Particle
(The American Society of Mechanical Engineers (ASME), 2004)A theoretical model based on multiphase flow theory of gas-particle is developed to evaluate the granular particle damping characteristics. Expressions for the drag forces of the equivalent viscous ... -
In-Plane Vibrations of a Thin Rotating Disk (Deshpande, M., and Mote, C.D., Jr., 2003, ASME J. Vibr. Acoust., 125, No. 1, pp. 68–72)
(The American Society of Mechanical Engineers (ASME), 2004)In a recent paper by Deshpande and Mote Jr., the stiffening effect for a thin disk due to its rotation on the eigenfrequencies of the in-plane vibrations was discussed. The paper is interesting ... -
Lund’s Elliptic Orbit Forced Response Analysis: The Keystone of Modern Rotating Machinery Analysis [ASME J. Vib. & Acous., 125, No. 4 pp. 455–461]
(The American Society of Mechanical Engineers (ASME), 2004)Correction to the definition of the imbalance mass required to correct a disk skew as reported on page 459. The equation was stated correctly, the explanation of the term Uoz was in error. ... -
An Analytical Method for Expansion Chambers With Continuously Varying Cross-Sectional Area
(The American Society of Mechanical Engineers (ASME), 2004)An analytical method is applied to predict the acoustic attenuation performance of expansion chambers with continuously varying cross-sectional area. A feature of the present method is the use ... -
Statistical Linearization Model for the Response Prediction of Nonlinear Stochastic Systems Through Information Closure Method
(The American Society of Mechanical Engineers (ASME), 2004)A new linearization model with density response based on information closure scheme is proposed for the prediction of dynamic response of a stochastic nonlinear system. Firstly, both probability ... -
An Experimental Study of the Acoustic Oscillations by Flows Over Cavities
(The American Society of Mechanical Engineers (ASME), 2004)We present an experimental study of acoustic oscillations induced by an internal airflow over a shallow and a deep cavity. The Kelvin-Helmholtz instability is interacting with an acoustic mode ... -
Dynamics and Control of Machines
(The American Society of Mechanical Engineers (ASME), 2004)Machine dynamics is the fundamental basis for optimal machine design. Based on dynamic analysis of the system special control, damping and counterbalance arrangements can be foreseen, which would ... -
Prediction of Time-Varying Vibroacoustic Energy Using a New Energy Approach
(The American Society of Mechanical Engineers (ASME), 2004)A new energetic approach is proposed to predict the time-varying dynamic response in the vibroacoustic field. This approach is based on the derivation and development of a hyperbolic type energy ... -
Dynamic Analysis of a Multi-Shaft Helical Gear Transmission by Finite Elements: Model and Experiment
(The American Society of Mechanical Engineers (ASME), 2004)A dynamic model of a multi-shaft helical gear reduction unit formed by N flexible shafts is proposed in this study. The model consists of a finite element model of shaft structures combined ... -
A New Regularization of Coulomb Friction
(The American Society of Mechanical Engineers (ASME), 2004)We present a new regularization of Coulomb’s law of friction that permits a straight-forward incorporation of frictional forces within existing numerical simulations. Similar to existing regularizations, ... -
Analysis of Nonlinear Aeroelastic Panel Response Using Proper Orthogonal Decomposition
(The American Society of Mechanical Engineers (ASME), 2004)The nonlinear panel flutter problem solved by Dowell in 1966 is used to investigate the new application of the proper orthogonal decomposition model reduction technique to aeroelastic analysis. ... -
On the Secondary Resonance of a Spinning Disk Under Space-Fixed Excitations
(The American Society of Mechanical Engineers (ASME), 2004)We investigate the possibility of secondary resonance of a spinning disk under space-fixed excitations. Von Karman’s plate model is employed in formulating the equations of motion of the spinning ... -
Numerical Identification of Electromagnetic Force Parameters for Linearized Rotordynamic Model of Cage Induction Motors
(The American Society of Mechanical Engineers (ASME), 2004)The electromechanical interaction in cage induction motors induces additional forces between the rotor and stator. Recently, a linear parametric model was presented for these forces and the model ... -
A New Type Controllable Squeeze Film Damper Using an Electromagnet
(The American Society of Mechanical Engineers (ASME), 2004)The paper presents stability of a rotor system with a squeeze film damper (SFD) using an electromagnet. The electromagnet is installed in the inner damper of the SFD. The proposed SFD has ... -
Axisymmetric Dynamic Stability of Rotating Sandwich Circular Plates
(The American Society of Mechanical Engineers (ASME), 2004)The axisymmetric dynamic stability of rotating sandwich circular plates with a constrained damping layer subjected to a periodic uniform radial loading along the outer edge of the host plate ... -
Frequency Domain Identification of Tip-sample van der Waals Interactions in Resonant Atomic Force Microcantilevers
(The American Society of Mechanical Engineers (ASME), 2004)Hamaker constants are characteristic material properties that determine the magnitude of the nonlinear van der Waals force between atoms, molecules and nanoscale aggregates of atoms. This paper ... -
Development of a PVDF Sensor for the Measurement of the Acoustic Local Volume Displacement of Vibrating Beams
(The American Society of Mechanical Engineers (ASME), 2004)One method of reduction of radiated sound from vibrating structures is to reduce the surface volume velocity. At low frequencies, the volume velocity (or volume displacement) of a vibrating ... -
Defect Detection for Bearings Using Envelope Spectra of Wavelet Transform
(The American Society of Mechanical Engineers (ASME), 2004)In order to overcome the shortcomings in the traditional envelope analysis in which manually specifying a resonant frequency band is required, a new approach based on the fusion of the wavelet ... -
Pull-in Dynamics of an Elastic Beam Actuated by Continuously Distributed Electrostatic Force
(The American Society of Mechanical Engineers (ASME), 2004)A detailed study of the transient nonlinear dynamics of an electrically actuated micron scale beam is presented. A model developed using the Galerkin procedure with normal modes as a basis ... -
Vibration Analysis of Non-Classically Damped Linear Systems
(The American Society of Mechanical Engineers (ASME), 2004)This Technical Brief presents a new method for vibration analysis of a non-classically damped system. The basic idea is to introduce a transformation, which bears clear physical meaning, so ...