Journal of Vibration and Acoustics: Recent submissions
Now showing items 3081-3100 of 3913
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Modeling of a Simple Rotor With a Switching Crack and Its Experimental Verification
(The American Society of Mechanical Engineers (ASME), 1992)The switching crack model having two different stiffnesses, depending upon the crack status, is developed. The necessary conditions for the crack opening/closing states are then analytically derived ... -
Unstable Self-Excitation of Torsional Vibration in AC Induction Motor Driven Rotational Systems
(The American Society of Mechanical Engineers (ASME), 1992)The most common NEMA Design Classes of AC induction motors have speed-torque characteristics that can give rise to unstable self-excitation of torsional vibration in rotational systems during ... -
Comparison of the Effects of Density and Sound Speed Variation in the Propagation of Planar Transient Waves
(The American Society of Mechanical Engineers (ASME), 1992)When expressed in the form of characteristic differential equations, the laws governing propagation of linear one-dimensional waves through heterogeneous media show that the only properties of ... -
Stable Variational Coupling Method for Fluid-Structure Interaction in Semi-Infinite Media
(The American Society of Mechanical Engineers (ASME), 1992)An energy-based symmetric coupled finite element and boundary integral method valid for all frequencies has been developed recently by the authors (Zeng et al., 1990; Bielak et al., 1991), for ... -
Controllable Squeeze Film Damper (An Application of Electro-Rheological Fluid)
(The American Society of Mechanical Engineers (ASME), 1992)A notable characteristic of electro-rheological (ER) fluid is the variation of its apparent viscosity with the application of an electric field. The application of this characteristic to the ... -
On the Relationship Between Veering of Eigenvalue Loci and Parameter Sensitivity of Eigenfunctions
(The American Society of Mechanical Engineers (ASME), 1992)The nature of the eigensolution of a general self-adjoint system in which two eigenvalues become nearly equal is studied for the relationship between the eigenvalue loci, which are the plot ... -
Effects of Viscous and Thermal Losses on Radiation from an Infinite Plate
(The American Society of Mechanical Engineers (ASME), 1992)This paper is concerned with the behavior of sound radiation from bending waves of an infinite plate in a fluid with viscous and thermal losses. The radiation field variables are obtained ... -
Mass, Stiffness, and Damping Matrix Identification: An Integrated Approach
(The American Society of Mechanical Engineers (ASME), 1992)Accurate estimates of the mass, stiffness, and damping characteristics of a structure are necessary for determining the control laws best suited for active control methodologies. There are several ... -
On the Impact Intensity of Vibrating Axially Moving Roller Chains
(The American Society of Mechanical Engineers (ASME), 1992) -
On the Use of Momentum Balance and the Assumed Modes Method in Transverse Impact Problems
(The American Society of Mechanical Engineers (ASME), 1992)The objective of this investigation is to examine the validity of applying the assumed modes method and the generalized impulse momentum approach that involves the coefficient of restitution in ... -
Cylindrical and Spherical Coordinate Versions of NPE for Transient and Steady-State Sound Beams
(The American Society of Mechanical Engineers (ASME), 1992)The NPE (nonlinear progressive wave equation) and associated computer program is a time-domain representation of acoustic propagation in waveguides that includes the effect of nonlinearity. In ... -
Methods for Speeding Up the Boundary Element Solution of Acoustic Radiation Problems
(The American Society of Mechanical Engineers (ASME), 1992)Methods for speeding up the boundary element solution of acoustic radiation problems are considered. The methods are based on solving the integral equation formulation of Burton and Miller for ... -
Experimental Verification of the Nonself-Adjoint State Space Duct Model
(The American Society of Mechanical Engineers (ASME), 1992)Experimental verification of the nonself-adjoint state space duct model obtained previously by the authors is presented. Both pressure excitation at the end and mass flow excitation in the domain ... -
Solution of the End Problem of a Liquid-Filled Cylindrical Acoustic Waveguide Using a Biorthogonality Principle
(The American Society of Mechanical Engineers (ASME), 1992)This paper treats the forced motion of an isothermal, Newtonian liquid in a semi-infinite cylindrical waveguide. Its bounding wall is assumed rigid, allowing neither normal nor tangential fluid ... -
Spectral Analysis of Wave Motion in Plane Solids With Boundaries
(The American Society of Mechanical Engineers (ASME), 1992)A spectral formulation is employed whereby in-plane stress waves are synthesized from the superposition of components at discrete frequencies and wavenumbers. The summations are performed using ... -
Fatigue Life Prediction Using Frequency Response Functions
(The American Society of Mechanical Engineers (ASME), 1992)This paper presents a method for fatigue life prediction of engineering components subjected to dynamic loads. It is based on the determination of the nominal stress at the crack position using ... -
Development of Porous Squeeze Film Damper Bearings for Improving the Blade Loss Dynamics of Rotor-Support Systems
(The American Society of Mechanical Engineers (ASME), 1992)An efficient oil film damper known as porous squeeze film damper (PSFD) is developed based on conventional squeeze film damper (SFD) for more effective and reliable rotor vibration control and ... -
Effect of a Vibrating Substructure on Acoustic Radiation from a Cylindrical Shell
(The American Society of Mechanical Engineers (ASME), 1992)The presence of a substructure in a cylindrical shell gives rise to dynamic interactions, including resonance effects, which have an influence on the radiated acoustic field. The lowest mode ... -
A Symmetric Inverse Vibration Problem
(The American Society of Mechanical Engineers (ASME), 1992)This paper considers the inverse eigenvalue problem for linear vibrating systems described by a vector differential equation with constant coefficient matrices. The inverse problem of interest ... -
A Spectral Element Approach to Wave Motion in Layered Solids
(The American Society of Mechanical Engineers (ASME), 1992)A matrix methodology similar to that of the finite element method is developed for the analysis of stress waves in layered solids. Because the mass distribution is modeled exactly, the approach ...