Journal of Vibration and Acoustics: Recent submissions
Now showing items 1561-1580 of 3913
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Vibration Response of Elastic Disks in Surrounding Fluid: Viscous Versus Acoustic Effects
(The American Society of Mechanical Engineers (ASME), 2010)The vibrations of thin, elastic, circular disks such as musical cymbals, hard disk drives, and microscale resonators are significantly influenced by the presence of a surrounding fluid. The ... -
Axisymmetric Vibrations of a Piezoelectric Spherical Shell Submerged in a Compressible Viscous Fluid Medium
(The American Society of Mechanical Engineers (ASME), 2010)Axisymmetric vibrations of a hollow piezoelectric sphere submerged in a compressible viscous fluid medium are investigated. The piezoelectric sphere is radially polarized. The differential equations ... -
Supervisory Control of Dynamical Systems With Uncertain Time Delays
(The American Society of Mechanical Engineers (ASME), 2010)A study of controlling dynamical systems with uncertain and varying time delays is presented in this paper. The uncertain time delay is assumed to fall in a range with known upper and lower ... -
Stability of a Nonlinear Axially Moving String With the Kelvin–Voigt Damping
(The American Society of Mechanical Engineers (ASME), 2009)In this note, a nonlinear axially moving string with the Kelvin–Voigt damping is considered. It is proved that the string is stable, i.e., its transversal displacement converges to zero when ... -
Crack Identification in a Rotating Shaft via the Reverse Directional Frequency Response Functions
(The American Society of Mechanical Engineers (ASME), 2009)A method is proposed for identifying the location of an open transverse crack in flexible rotor systems by modeling the crack as a localized element with rotating asymmetry. It exploits the ... -
An Improvement of a Nonclassical Numerical Method for the Computation of Fractional Derivatives
(The American Society of Mechanical Engineers (ASME), 2009)Standard methods for the numerical calculation of fractional derivatives can be slow and memory consuming due to the nonlocality of the differential operators. and (2002, “ A Numerical Scheme ... -
Effect of Strain Nodes and Electrode Configuration on Piezoelectric Energy Harvesting From Cantilevered Beams
(The American Society of Mechanical Engineers (ASME), 2009)For the past five years, cantilevered beams with piezoceramic layer(s) have been frequently used as piezoelectric energy harvesters for vibration-to-electric energy conversion. Typically, the energy ... -
Experimental Identification of Generalized Proportional Viscous Damping Matrix
(The American Society of Mechanical Engineers (ASME), 2009)A simple and easy-to-implement algorithm to identify a generalized proportional viscous damping matrix is developed in this work. The chief advantage of the proposed technique is that only a ... -
The Effect of Off-Neutral Axis Excitation on the Vibration Response of Finite Ribbed-Plates
(The American Society of Mechanical Engineers (ASME), 2009)In this paper, an analytical solution is derived and used for studying the effect of off-neutral axis loading (point force excitation applied off the neutral axis of a rib) on ribbed-plate ... -
Finite Element Model Tuning Using Measured Mass Properties and Ground Vibration Test Data
(The American Society of Mechanical Engineers (ASME), 2009)A simple and efficient approach for tuning finite element models to match computed frequencies, mode shapes, and mass properties to the experimental data is introduced in this study. The model ... -
Effect of Nonhomogeneity on Vibration of Orthotropic Rectangular Plates of Varying Thickness Resting on Pasternak Foundation
(The American Society of Mechanical Engineers (ASME), 2009)Free transverse vibrations of nonhomogeneous orthotropic rectangular plates of varying thickness with two opposite simply supported edges (y=0 and y=b) and resting on two-parameter foundation ... -
Methods for Multimodal Vibration Suppression and Energy Harvesting Using Piezoelectric Actuators
(The American Society of Mechanical Engineers (ASME), 2009)This paper presents a novel method for suppressing multimodal vibrations in structures by using the controlled harvesting and storage of vibration energy as electrical charge. Unlike a traditional ... -
Nonlinear Vibration of a Magneto-Elastic Cantilever Beam With Tip Mass
(The American Society of Mechanical Engineers (ASME), 2009)In this work the effect of the application of an alternating magnetic field on the large transverse vibration of a cantilever beam with tip mass is investigated. The governing equation of ... -
Acoustic Radiation From an Infinite Laminated Composite Cylindrical Shell With Doubly Periodic Rings
(The American Society of Mechanical Engineers (ASME), 2009)Acoustic radiation from a point-driven, infinite fluid-loaded, laminated composite shell, which is reinforced by doubly periodic rings, is investigated theoretically. The theory is based on the ... -
An Approach for the Construction of Entropy Measure and Energy Map in Machine Fault Diagnosis
(The American Society of Mechanical Engineers (ASME), 2009)This paper presents a novel wavelet-based methodology for feature extraction and classification. To compare the performance of the proposed approach with major existing methods, a number of sets ... -
Genetic Integration of Different Diagnosis Methods and/or Fault Features for Improvement of Diagnosis Accuracy
(The American Society of Mechanical Engineers (ASME), 2009)Genetic integration of different diagnosis methods and/or fault features is proposed in this paper for improvement of diagnosis accuracy, and a weighted matrix is established by integrating neural ... -
The Effect of Dual-Rate Suspension Damping on Vehicle Response to Transient Road Inputs
(The American Society of Mechanical Engineers (ASME), 2009)The acceleration response of road vehicles to shock inputs from road irregularities such as bumps and hollows is an important consideration in the design of vehicle suspensions and damping ... -
A New 3D Finite Element for Sandwich Beams With a Viscoelastic Core
(The American Society of Mechanical Engineers (ASME), 2009)A sandwich finite element for laminated steels is presented. It is based on a discrete displacement approach and allows for both symmetrical and unsymmetrical configurations. The three-layer ... -
A Method to Simulate Structural Intensity Fields in Plates and General Structures Induced by Spatially and Temporally Random Excitation Fields
(The American Society of Mechanical Engineers (ASME), 2009)The structure-borne power in bending waves is well understood, and has been studied by many investigators in ideal beam and plate structures. Most studies to date, however, have considered only ... -
Fractional Optimal Control of Continuum Systems
(The American Society of Mechanical Engineers (ASME), 2009)This paper presents a formulation and a numerical scheme for fractional optimal control (FOC) of a class of continuum systems. The fractional derivative is defined in the Caputo sense. The ...