Journal of Vibration and Acoustics: Recent submissions
Now showing items 2121-2140 of 3913
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The Effect of Actuator and Sensor Placement on the Active Control of Rotor Unbalance
(The American Society of Mechanical Engineers (ASME), 2003)This paper investigates both theoretically and experimentally the effect of the location and number of sensors and magnetic bearing actuators on both global and local vibration reduction along ... -
Robust Control of a 2D Acoustic Enclosure*
(The American Society of Mechanical Engineers (ASME), 2003)This paper reports experimental results in the application of feedback control of acoustic noise in a 2D enclosure. It is shown that the feedback control of 2D enclosures poses peculiar problems ... -
Vibration Control of a Traveling Suspended System Using Wave Absorbing Control
(The American Society of Mechanical Engineers (ASME), 2003)This paper describes vibration control of a suspended system using a wave absorbing method. Here, we treat a system that accepts a traveling command. This system is called a traveling system. ... -
Effect of Thrust Magnetic Bearing on Stability and Bifurcation of a Flexible Rotor Active Magnetic Bearing System
(The American Society of Mechanical Engineers (ASME), 2003)This paper is concerned with the effect of a thrust active magnetic bearing (TAMB) on the stability and bifurcation of an active magnetic bearing rotor system (AMBRS). The shaft is flexible ... -
A Stochastic Model for Simulation and Diagnostics of Rolling Element Bearings With Localized Faults
(The American Society of Mechanical Engineers (ASME), 2003)This paper addresses the stochastic modeling of the vibration signal produced by localized faults in rolling element bearings and its use for diagnostic purposes. The aim is essentially to ... -
Nonlinear Dynamic Analysis of a Rotor Shaft System With Viscoelastically Supported Bearings
(The American Society of Mechanical Engineers (ASME), 2003)This research investigates the dynamic analysis of a single-rotor shaft system with nonlinear elastic bearings at the ends mounted on viscoelastic suspension. Timoshenko shaft model is utilized ... -
New Evaluation Method on Gear Dynamics Using Continuous and Discrete Wavelet Transforms
(The American Society of Mechanical Engineers (ASME), 2003)The aim of this study is to propose a new evaluation method of gear dynamics using the continuous and discrete wavelet transforms. The wavelet transform (WT) is a method for the time-frequency ... -
Torsional Vibration Analysis of Complicated Multi-Branched Shafting Systems by Modal Synthesis Method
(The American Society of Mechanical Engineers (ASME), 2003)The torsional vibration calculations of the complicated multi-branched system with rigid connection and flexible connections made up of elastic-coupling parts are very difficult to perform using ... -
Nonlinear Parameter Estimation in Rotor-Bearing System Using Volterra Series and Method of Harmonic Probing
(The American Society of Mechanical Engineers (ASME), 2003)Volterra series provides a structured analytical platform for modeling and identification of nonlinear systems. The series has been widely used in nonparametric identification through higher order ... -
Jørgen W. Lund: Theories Versus Tests, Part 2: Damped Critical Speeds of Rotors and Fluid Film Bearing Characteristics
(The American Society of Mechanical Engineers (ASME), 2003)Experiments are conducted on two rotors, weighing 40 and 187.5 kg, respectively, and supported in cylindrical bearings with two axial grooves. The journal position is measured in the bearing ... -
Theory on Pitch Noise and Its Application
(The American Society of Mechanical Engineers (ASME), 2003)A theory on pitch noise of a tire has been developed based on the assumption that noise is approximated by a series of Dirac delta-function. The proposed theory predicts the existence of ... -
Usage of the Lund Rotordynamic Programs in the Analysis of Centrifugal Compressors
(The American Society of Mechanical Engineers (ASME), 2003)This paper is intended to be a history of the usage of the Jørgen Lund rotordynamic programs in the analysis of centrifugal compressors from the perspective of the author’s experience in ... -
Spectrum of High-Frequency Acoustic Noise in Inviscid Liquid-Linear Approximation for Spherical Waves
(The American Society of Mechanical Engineers (ASME), 2003)The high-frequency asymptotics of the acoustic noise spectrum is considered for the case of spherically symmetric waves propagating in an unbounded inviscid liquid. Using the Kirkwood and Bethe ... -
Jørgen W. Lund: Theories Versus Tests, Part 1: Balancing and Response of Flexible Rotors
(The American Society of Mechanical Engineers (ASME), 2003)The contribution of the late Professor Jørgen W. Lund in the field of rotor dynamics and fluid film bearings is presented in a condensed form with the emphasis on the experimental work ... -
Investigation of the Sound Transmission into an Advanced Grid-Stiffened Structure
(The American Society of Mechanical Engineers (ASME), 2003)The noise transmission behavior of an advanced grid-stiffened (AGS) composite structure has been investigated by combining numerical and experimental methods. Structural-acoustic coupling was found ... -
Inertia Effects in Squeeze-Film Damper Bearings Generated by Circumferential Oil Supply Groove
(The American Society of Mechanical Engineers (ASME), 2003)The dynamic properties of an industrial Squeeze-Film Damper (SFD) bearing design are described using the well-known perturbation approach, where the reaction forces induced by small movements away ... -
Closed-Form Exact Solution to H∞ Optimization of Dynamic Vibration Absorbers (Application to Different Transfer Functions and Damping Systems)
(The American Society of Mechanical Engineers (ASME), 2003)H∞ optimization of the dynamic vibration absorbers is a classical optimization problem, and has been already solved more than 50 years ago. It is a well-known solution, but we know this ... -
Optimal Stiffener Design for Interior Sound Reduction Using a Topology Optimization Based Approach
(The American Society of Mechanical Engineers (ASME), 2003)A topology optimization based approach is proposed to study the optimal configuration of stiffeners for the interior sound reduction. Since our design target is aimed at reducing the low frequency ... -
Lund’s Tilting Pad Journal Bearing Pad Assembly Method
(The American Society of Mechanical Engineers (ASME), 2003)This paper summarizes the development during the last 50 years of tilting pad journal bearing analysis and design. The major impetus of this development was a landmark paper published by ... -
Jørgen Lund: A Perspective on His Contributions to Modern Rotor Bearing Dynamics
(The American Society of Mechanical Engineers (ASME), 2003)This paper presents a perspective on the work of Dr. J. W. Lund, in the field of rotor-bearing dynamics. It traces his most influential work in published journals, software, data published ...