Journal of Vibration and Acoustics: Recent submissions
Now showing items 2061-2080 of 3913
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Extraction of Periodic Components for Gearbox Diagnosis Combining Wavelet Filtering and Cyclostationary Analysis
(The American Society of Mechanical Engineers (ASME), 2004)Wavelet filtering is combined with cyclostationary analysis for detection of gear tooth faults in a gearbox. The parameters of the wavelet filter are optimized by using the proposed entropy ... -
Vibrations of Stiffened Composite Panels With Smart Materials
(The American Society of Mechanical Engineers (ASME), 2004)A numerical study of the use of electrorheological (ER) fluids and piezoelectric (PZT) actuators to control random vibrations of stiffened composite panels is presented. Active control of stiffness ... -
On a Persistent Misunderstanding of the Role of Hysteretic Damping in Rotordynamics
(The American Society of Mechanical Engineers (ASME), 2004)Even though the role of damping in rotordynamics has been known for more than half a century, some incorrect statements on the effects of hysteretic damping, particularly in the subcritical ... -
On the Nonlinear Dynamics of Tether Suspensions for MEMS
(The American Society of Mechanical Engineers (ASME), 2004)Many MEM devices feature tether suspensions and it is known that the tethers induce a stiffening behavior. In this paper, we develop a model for a tether and, from it, establish several ... -
Energetics and Conserved Functional of Axially Moving Materials Undergoing Transverse Nonlinear Vibration
(The American Society of Mechanical Engineers (ASME), 2004)Axially moving materials can represent many engineering devices such as power transmission belts, elevator cables, plastic films, magnetic tapes, paper sheets, textile fibers, band saws, aerial ... -
Optimal Implementation of Miniature Piezoelectric Panel Speakers Using the Taguchi Method and Genetic Algorithm
(The American Society of Mechanical Engineers (ASME), 2004)A thin and miniature piezoelectric panel speaker has been developed in this paper. The system is modeled using the energy method in conjunction with the finite element method. The electrical ... -
Internal Resonance Phenomena of the Jeffcott Rotor With Nonlinear Spring Characteristics
(The American Society of Mechanical Engineers (ASME), 2004)The Jeffcott rotor is a two-degree-of-freedom linear model with a disk at the midspan of a massless elastic shaft. This model, executing lateral whirling motions, has been widely used in the ... -
Optimal Design and Implementation of an Omnidirectional Panel Speaker Array Using the Genetic Algorithm
(The American Society of Mechanical Engineers (ASME), 2004)A panel speaker array with omnidirectional radiation pattern is presented in this paper. Array signal-processing techniques are utilized to manipulate the sound beam electronically such that ... -
On the Autonomous Gain and Phase Tailoring Transfer Functions of Symmetrically Distributed Piezoelectric Sensors
(The American Society of Mechanical Engineers (ASME), 2004)A new design concept for a distributed sensor, which was developed based on the principle that the strain distribution of an arbitrary finite plate structure can be expressed as the superposition ... -
Methods for Calculating Bending Moment and Shear Force in the Moving Mass Problem
(The American Society of Mechanical Engineers (ASME), 2004)Two methods able to capture with different levels of accuracy the discontinuities in the bending moment and shear force laws in the dynamic analysis of continuous structures subject to a moving ... -
No-Jerk Skyhook Control Methods for Semiactive Suspensions
(The American Society of Mechanical Engineers (ASME), 2004)This paper presents two alternative implementations of skyhook control, named “skyhook function” and “no-jerk skyhook,” for reducing the dynamic jerk that is often experienced with conventional ... -
Dynamic Snap-Through of a Shallow Arch Under a Moving Point Load
(The American Society of Mechanical Engineers (ASME), 2004)In this paper we study the dynamic behavior of a shallow arch under a point load Q traveling at a constant speed. Emphasis is placed on finding whether snap-through buckling will occur. In ... -
Transient Stress Analysis and Fatigue Life Estimation of Turbine Blades
(The American Society of Mechanical Engineers (ASME), 2004)This paper is concerned with life estimation of a turbine blade taking into account the combined effects of centrifugal stresses, vibratory stresses and thermal stresses. The stresses are ... -
Dynamic Modeling and Vibration Control of Electrorheological Mounts
(The American Society of Mechanical Engineers (ASME), 2004)This paper presents two different types of electrorheological (ER) mounts that can support a static load of 200 kg. One is a flow mode type, and the other is a squeeze mode type. After ... -
Analytical Solution for Stochastic Response of a Fractionally Damped Beam
(The American Society of Mechanical Engineers (ASME), 2004)This paper presents a general analytical technique for stochastic analysis of a continuous beam whose damping characteristic is described using a fractional derivative model. In this formulation, ... -
Dynamic Analysis of a Protein-Ligand Molecular Chain Attached to an Atomic Force Microscope
(The American Society of Mechanical Engineers (ASME), 2004)Dynamic numerical simulation of a protein-ligand molecular chain connected to a moving atomic force microscope (AFM) has been studied. A sinusoidal base excitation of the cantilevered beam of ... -
Existence and Stability of Localized Oscillations in 1-Dimensional Lattices With Soft-Spring and Hard-Spring Potentials
(The American Society of Mechanical Engineers (ASME), 2004)In this paper, we use the method of homoclinic orbits to study the existence and stability of discrete breathers, i.e., spatially localized and time-periodic oscillations of a class of ... -
Optimal Profile Design for the Resonator Beam of an Ultrasonic Motor via Finite Element Modeling and Taguchi Methodology
(The American Society of Mechanical Engineers (ASME), 2004)This study presents the optimal design for the resonator beam profile of a bimodal ultrasonic motor via finite element modeling and Taguchi experimental design method. General design goals of ... -
On the Characteristics of Bifurcation and Nonlinear Dynamic Response
(The American Society of Mechanical Engineers (ASME), 2004)Spectral analysis has been widely applied to the detection of bifurcation and the determination of the extent to which dynamic instability and chaotic responses develop. However, because spectral ... -
Editorial
(The American Society of Mechanical Engineers (ASME), 2003)A number of changes accompany this first issue of 2003, with more to follow later in the year. Five associate editors have completed their term of service: Rob Clark, Chuck Farrar, H. S. ...