Journal of Vibration and Acoustics: Recent submissions
Now showing items 2241-2260 of 3913
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Vibration-Based Damage Identification in Structures Exhibiting Axial and Torsional Response
(The American Society of Mechanical Engineers (ASME), 2001)A method is derived to detect and localize linear damage in a structure using the measured modal vibration parameters. This method is applicable when the vibration strain energy is stored in ... -
Material and Microslip Damping in a Rotor Taking Gravity and Anisotropic Bearings Into Account
(The American Society of Mechanical Engineers (ASME), 2001)The paper is concerned with material and microslip damping in a rotor. The horizontal rotor is carried by anisotropic bearings, which means that the shaft feels three different frequencies, the ... -
Modeling and Control of Acoustic Ducts
(The American Society of Mechanical Engineers (ASME), 2001)This paper presents closed-form mathematical models for an acoustic duct with general boundary conditions. These infinite-dimensional models are derived using symbolic computations. A new method ... -
Decentralized Feedback Control of Broadband Duct Noise with Nodal Placement of Colocated Actuator-Sensor Pairs
(The American Society of Mechanical Engineers (ASME), 2001)This paper presents experimental results from a demonstration of feedback control experiments on an open-ended acoustic duct, using nodally placed colocated actuator-sensor pairs. The disturbance ... -
Feedback Stability Limits for Active Isolation Systems with Reactive and Inertial Actuators
(The American Society of Mechanical Engineers (ASME), 2001)Some of the compromises inherent in using a passive system to isolate delicate equipment from base vibration can be avoided using fully active skyhook damping. Ideally, a secondary force, which ... -
Coupled Helmholtz Resonators for Acoustic Attenuation
(The American Society of Mechanical Engineers (ASME), 2001)Helmholtz resonators are used in a variety of applications to reduce the transmission of unwanted sound. This work demonstrates that mechanically coupled resonators can be used to design a ... -
Identification of Moving Loads on an Orthotropic Plate
(The American Society of Mechanical Engineers (ASME), 2001)A method is presented to identify indirectly loads moving on an orthotropic plate. The loads are in a group of two forces or four forces. The dynamic behavior of the plate under the action ... -
Modeling and Feedback Structural Acoustics Control of a Flexible Plate
(The American Society of Mechanical Engineers (ASME), 2001)A lumping method via an inverse modal analysis approach is proposed in this paper for creating a lumped parameter model for a structure with distributed parameters. On the basis of the lumped ... -
A Sampled-Data Formulation for Boundary Control of a Longitudinal Elastic Bar
(The American Society of Mechanical Engineers (ASME), 2001)The sampled-data boundary control problem for a longitudinal flexible bar is formulated as a linear discrete-time control problem in an infinite-dimensional state space. With zero-order-hold applied ... -
Applications of the Impedance Method on Multiple Piezoelectric Actuators Driven Structures
(The American Society of Mechanical Engineers (ASME), 2001)An impedance-based system modeling technique has been developed to determine the output forces of multiple piezoelectric (PZT) patch actuators on an active structure to produce a known vibration ... -
An Active Microvibration Isolation System for Hi-tech Manufacturing Facilities
(The American Society of Mechanical Engineers (ASME), 2001)This paper presents an active microvibration isolation system using voice-coil linear motors, and pneumatic and piezoelectric actuators. This system is designed to reduce microvibration of the six ... -
Modal Overlap and Dissipation Effects of a Cantilever Beam with Multiple Attached Oscillators
(The American Society of Mechanical Engineers (ASME), 2001)This work was prompted by a study performed by Strasberg [7] in which numerous small spring-mass-damper systems are attached to a large suspended mass representing the master structure. The ... -
Free Response of Twisted Plates with Fixed Support Separation
(The American Society of Mechanical Engineers (ASME), 2001)In previous work, Mockensturm and Mote investigated the effects of twist on steady motions of an axially moving plate. It was found that twisting produces compressive stresses that increase ... -
Thickness Deformation of Constrained Layer Damping: An Experimental and Theoretical Evaluation
(The American Society of Mechanical Engineers (ASME), 2001)This paper presents a study of thickness deformation of the viscoelastic material in constrained layer damping (CLD) treatments. The first goal of the study is to demonstrate the feasibility ... -
A New Cepstral Analysis Procedure of Recovering Excitations for Transient Components of Vibration Signals and Applications to Rotating Machinery Condition Monitoring
(The American Society of Mechanical Engineers (ASME), 2001)A new cepstral analysis procedure with the complex cepstrum for recovering excitations causing multiple transient signal components from vibration signals, especially from rotor vibration signals, ... -
Complex Modal Analysis of Non-Self-Adjoint Hybrid Serpentine Belt Drive Systems
(The American Society of Mechanical Engineers (ASME), 2001)A linear damped hybrid (continuous/discrete components) model is developed in this paper to characterize the dynamic behavior of serpentine belt drive systems. Both internal material damping and ... -
Shilnikov Chaos and Dynamics of a Self-Sustained Electromechanical Transducer
(The American Society of Mechanical Engineers (ASME), 2001)The dynamics of a self-sustained electromechanical transducer is studied. The stability of the critical points is analyzed using the analytic Routh-Hurwitz criterion. Analytic oscillatory solutions ... -
On the Normal Forms Associated with High Dimensional Systems
(The American Society of Mechanical Engineers (ASME), 2001)In this paper, a modified normal form approach is proposed for the analysis of high dimensional nonlinear systems. Using the modified approach, calculations of normal forms and, in particular, ... -
Structural Identification of Mir Using Inverse System Dynamics and Mir/Shuttle Docking Data
(The American Society of Mechanical Engineers (ASME), 2001)The objective of this work was to investigate the use of inverse system identification techniques on Mir/Shuttle docking data to identify Mir vibrational characteristics for ultimate application ... -
Precise Solutions for Surface Wave Propagation in Stratified Material
(The American Society of Mechanical Engineers (ASME), 2001)A precise integration algorithm is proposed to solve the differential equation of surface wave propagation for stratified anisotropic material. The method can easily be extended to 3D wave ...