Journal of Vibration and Acoustics: Recent submissions
Now showing items 3141-3160 of 3913
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Sound Radiation From a Finite Cylindrical Shell Covered With a Compliant Layer
(The American Society of Mechanical Engineers (ASME), 1991)The aim of this work is to present the mathematical analysis and numerical results about sound radiation from a finite cylindrical shell covered with a compliant layer, immersed in water. The ... -
Fan Casing Noise Radiation
(The American Society of Mechanical Engineers (ASME), 1991)This paper presents a method for assessing the extent of casing noise radiation of a centrifugal fan relative to the aeroacoustic sources associated with the inlet box of the fan. Central to ... -
Biomechanics of Hearing Sensitivity
(The American Society of Mechanical Engineers (ASME), 1991)This survey lecture on the biomechanics of hearing sensitivity is concerned, not with how the brain in man and other mammals analyzes the data coming to it along auditory nerve fibers, but ... -
Sound Transmission in a Duct With an Array of Lined Resonators
(The American Society of Mechanical Engineers (ASME), 1991)A simple method is presented for describing the sound transmission in a duct containing an array of lined resonators. The impedance of a resonator element is calculated, including the effect ... -
Calculation of Sound Fields Over Audience Seats by Using Integral Equation Method
(The American Society of Mechanical Engineers (ASME), 1991)It is known that seat rows have a considerable effect on the sound transmission in auditoriums. When the direct wave propagates over the audience seats at near-grazing angle, excess attenuation ... -
Vibration Control of the Elastodynamic Response of High-Speed Flexible Linkage Mechanisms
(The American Society of Mechanical Engineers (ASME), 1991)A methodology for suppressing the elastodynamic responses of high-speed flexible linkage mechanisms by employing a state feedback optimal control scheme is proposed. This permits the mechanisms ... -
An Eigenvalue Based Acoustic Impedance Measurement Technique
(The American Society of Mechanical Engineers (ASME), 1991)A method is developed for measuring acoustic impedance. The method employs a one-dimensional tube or duct with excitation at one end and an unknown acoustic impedance at the termination end. ... -
A General Superelement Model on a Moving Reference Frame for Planar Multibody System Dynamics
(The American Society of Mechanical Engineers (ASME), 1991)This paper presents a mathematical formulation for a superelement on a moving reference frame. A group of constrained elements, forming a single degree-of-freedom with respect to some reference ... -
Wall Pressure Fluctuations During Transition on a Flat Plate
(The American Society of Mechanical Engineers (ASME), 1991) -
Some Observations of Chaotic Vibration Phenomena in High-Speed Rotordynamics
(The American Society of Mechanical Engineers (ASME), 1991)Subharmonic response in rotordynamics may be encountered when a rotor is operated with its rotational centerline eccentric to that of a close clearance static part, so that local contact can ... -
Transient Waves in Anisotropic Laminated Plates, Part 2: Application
(The American Society of Mechanical Engineers (ASME), 1991)The application of the hybrid numerical method proposed in the previous paper by the present authors to the computation of transient waves in composite material plates excited by step-impact ... -
A Method for Substructural Sensitivity Synthesis
(The American Society of Mechanical Engineers (ASME), 1991)A new method, termed the substructural sensitivity synthesis method, which utilizes the computational merits of the component mode synthesis technique was proposed for the simple calculation of ... -
Centrifugal-Acceleration Modes for Incompressible Fluid in the Leakage Annulus Between a Shrouded Pump Impeller and Its Housing
(The American Society of Mechanical Engineers (ASME), 1991)An analysis is presented for the perturbed flow in the leakage path between a shrouded-pump impeller and its housing. A bulk-flow model is used for the analysis consisting of the path-momentum, ... -
Transient Waves in Anisotropic Laminated Plates, Part 1: Theory
(The American Society of Mechanical Engineers (ASME), 1991)A hybrid numerical method in which the finite element method and the method of Fourier transforms are combined is proposed for computing the transient waves in anisotropic laminated plates ... -
Identification of a Nonproportional Damping Matrix from Incomplete Modal Information
(The American Society of Mechanical Engineers (ASME), 1991)In modeling structures the damping matrix is the most difficult to represent. This is even more difficult in complicated structures that are not lightly damped. The work presented here provides ... -
Friction Damping of Circular Motion and Its Implications to Vibration Control
(The American Society of Mechanical Engineers (ASME), 1991)When vibrating bodies are mutually constrained through friction contact they may move with respect to each other and dissipate energy at the interface. If the relative motion of the contacting ... -
Prediction of Low Frequency Vibrational Frequencies of Submerged Structures
(The American Society of Mechanical Engineers (ASME), 1991)Practical numerical techniques are described for calculating the low frequency vibrational resonances of general submerged structures. Both finite element and boundary element approaches for calculating ... -
Force Reconstruction for Impact Tests
(The American Society of Mechanical Engineers (ASME), 1991)Two force reconstruction techniques were used to evaluate the impact test of a scale model nuclear transportation cask dropped 30 ft. onto an unyielding target. The two techniques are: the sum ... -
A Programmable Electromagnetic Bearing for Vibration Control of a Flexible Shaft
(The American Society of Mechanical Engineers (ASME), 1991)The transverse vibrations of flexible rotors can be reduced to safe levels by radial control forces at an intermediate span position, applied by a suitable actuator. One versatile control ... -
Test and Theory for Piezoelectric Actuator-Active Vibration Control of Rotating Machinery
(The American Society of Mechanical Engineers (ASME), 1991)The application of piezoelectric actuators for active vibration control (AVC) of rotating machinery is examined. Theory is derived and the resulting predictions are shown to agree closely with ...