Journal of Vibration and Acoustics: Recent submissions
Now showing items 2581-2600 of 3913
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Dynamic Behavior of the Band/Wheel Mechanical System of Industrial Band Saws
(The American Society of Mechanical Engineers (ASME), 1998)This paper presents an analytical and experimental investigation on the dynamic behavior of the band/wheel mechanical system of an industrial metal-cutting band saws. In practice, this machine ... -
Evaluation of an Actuator Placement Method for Active Noise Control Applications
(The American Society of Mechanical Engineers (ASME), 1998)In our previous work, we developed a new actuator placement algorithm that is capable of selecting the best actuator placement for active noise control problems over a broad band of frequencies. ... -
Dynamics of a Rotating System With a Nonlinear Eddy-Current Damper
(The American Society of Mechanical Engineers (ASME), 1998)We investigate the nonlinear dynamics and stability of a rotating system with an electromagnetic noncontact eddy-current damper. The damper is modeled by a thin nonmagnetic disk that is translating ... -
Combining Subset Selection and Parameter Constraints in Model Updating
(The American Society of Mechanical Engineers (ASME), 1998)Model updating often produces sets of equations whose solution are ill-conditioned and extra information must be used to produce a well-conditioned estimation problem. One possibility is to change ... -
A Separation Principle for Gyroscopic Conservative Systems
(The American Society of Mechanical Engineers (ASME), 1997)Closed-form solutions to differential eigenvalue problems associated with natural conservative systems, albeit self-adjoint, can be obtained in only a limited number of cases. Approximate solutions ... -
Harmonic Balance Vibration Analysis of Turbine Blades With Friction Dampers
(The American Society of Mechanical Engineers (ASME), 1997)Although considerable effort has been devoted to the formulation of predictive models of friction damper behavior in turbomachinery applications, especially for turbine blades, the problem is far ... -
Structural Control Using Analog Phase-Locked Loops
(The American Society of Mechanical Engineers (ASME), 1997)A study of the application of the phase-locked loop (PLL) to modal control of mechanical structures is performed. An analog PLL circuit is used to control the vibration of a cantilevered beam ... -
Modelling of a Hybrid Constrained Layer/Piezoceramic Approach to Active Damping
(The American Society of Mechanical Engineers (ASME), 1997)It has been shown that significant reductions in structural vibration levels can be achieved using a hybrid system involving constrained layer damping and active control with piezoceramics. In ... -
Active Vibration Absorption Using Delayed Resonator With Relative Position Measurement
(The American Society of Mechanical Engineers (ASME), 1997)A novel active vibration absorption technique, the Delayed Resonator, has been introduced recently as a unique way of suppressing undesired oscillations. It suggests a control force on a ... -
Pole Assignment Self-tuning Control for a Multivariable Vibrating System
(The American Society of Mechanical Engineers (ASME), 1997)A dynamic absorber with DC servo motors for actuation is designed and built as an actively suppressing vibration system. This is a two-stage spring-lumped mass system with sliding guide. Each ... -
Integrated Estimation/Identification Using Second-Order Dynamic Models
(The American Society of Mechanical Engineers (ASME), 1997)An algorithm is presented which accurately identifies multi-input-multi-output systems characterized by vibrating structures. More specifically, an identification technique is integrated with an optimal ... -
Classical Electrodynamics and Acoustics: Sound Radiation by Moving Multipoles
(The American Society of Mechanical Engineers (ASME), 1997)In classical electrodynamics (CED) P. Dirac used the average of retarded and advanced fields to represent the bound field and their difference to represent the free field in his derivation of ... -
Stability Analysis and Complex Dynamics of a Gear-Pair System Supported by a Squeeze Film Damper
(The American Society of Mechanical Engineers (ASME), 1997)The stability properties of periodic steady state response of a nonlinear geared rotordynamic system are investigated. The nonlinearity arises because one support of the system includes a cavitated ... -
Free Vibrations of Thick Hollow Circular Cylinders From Three-Dimensional Analysis
(The American Society of Mechanical Engineers (ASME), 1997)A three-dimensional (3-D) method of analysis is developed for the free vibration frequencies of hollow circular cylinders of elastic material. The method is based upon local coordinates whose ... -
Dynamic Behavior of a Harmonically Excited Electromechanical Drive With Elastic Couplings
(The American Society of Mechanical Engineers (ASME), 1997)Steady-state vibration of a lumped rotary system containing an electric drive is considered. The system is subjected to the harmonic excitation caused by the variation of voltage of the electric ... -
Modeling, Actuation, and Control of an Active Fluid Vibration Isolator
(The American Society of Mechanical Engineers (ASME), 1997)An integrated mathematical model for the dynamics, actuation, and control of an active fluid/elastomeric tuned vibration isolator in a two mass system is presented. The derivation is based on ... -
Identification of Linearized Dynamic Characteristics of Rolling Element Bearings
(The American Society of Mechanical Engineers (ASME), 1997)This study presents a new method for estimating linearized coefficients of rolling element bearings. The rotor-bearing systems considered here are composed of a flexible shaft, which may be ... -
3-D Vibration Analysis of Fiber Reinforced Composite Laminated Cylindrical Shells
(The American Society of Mechanical Engineers (ASME), 1997)In this paper, 3-D solutions of free vibrations are presented for isotropic and composite laminated cylindrical shells. The perturbation method and a variational principle are used to obtain the ... -
Nonstationary Oscillation of a Rotating Shaft With Nonlinear Spring Characteristics During Acceleration Through a Major Critical Speed (A Discussion by the Asymptotic Method and the Complex-FFT Method)
(The American Society of Mechanical Engineers (ASME), 1997)Nonstationary oscillations during acceleration through a major critical speed of a rotating shaft with nonlinear spring characteristics are discussed. First, the first approximate solutions of ... -
Active and Reactive Structural Energy Flow
(The American Society of Mechanical Engineers (ASME), 1997)Vibration of linear structures having internal material damping is considered. Energy supplied to such structures by external dynamic loads and mechanical energy flow inside these structures are ...