Journal of Vibration and Acoustics: Recent submissions
Now showing items 2801-2820 of 3913
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Instantaneous Directivity in Jet Noise by Multipole Decomposition
(The American Society of Mechanical Engineers (ASME), 1995)Noise generated by nearly axisymmetric vortex pairing in an excited low Mach number jet was studied experimentally as a prototypical jet noise source using a three-dimensional microphone array. ... -
Improved Method for In-situ Elastic Constants of Isotropic and Orthotropic Composite Materials Using Plate Modal Data With Trimodal and Hexamodal Rayleigh Formulations
(The American Society of Mechanical Engineers (ASME), 1995)This paper relates a further development of an earlier work by the authors, in which they presented a method for deriving the four independent elastic constants (longitudinal and transverse ... -
Nonlinear Normal Modes of a Continuous System With Quadratic Nonlinearities
(The American Society of Mechanical Engineers (ASME), 1995)We use two approaches to determine the nonlinear modes and natural frequencies of a simply supported Euler-Bernoulli beam resting on an elastic foundation with distributed quadratic and cubic ... -
Breathing Vibrations of a Horizontal Circular Cylindrical Tank Shell, Partially Filled With Liquid
(The American Society of Mechanical Engineers (ASME), 1995)A theoretical approach to study breathing vibrations of cylindrical shells with horizontal axis, partially filled with liquid, is delineated and the results of some modal tests conducted on an ... -
A Spectral Description of Inertial Effects in Fluid-Loaded Plates
(The American Society of Mechanical Engineers (ASME), 1995)The wavenumber-based formulation of the surface variational principle (SVP) describes the surface pressure and displacement as a comparatively small set of interacting waves. It enables one to ... -
A Design Method for Minimizing the Sound Power Radiated from Plates by Adding Optimally Sized, Discrete Masses
(The American Society of Mechanical Engineers (ASME), 1995)In this paper, a novel method for minimizing the sound power radiated from a structure is presented. The method involves placing strategically sized masses at specific locations on the structure’s ... -
Substructure Methods in Vibration
(The American Society of Mechanical Engineers (ASME), 1995)When the response of a structural system to dynamic excitation must be analyzed, a substructure coupling method (or component-mode synthesis method) is frequently employed to reduce the order ... -
Structural Health Monitoring Using Vibration Measurements and Engineering Insight
(The American Society of Mechanical Engineers (ASME), 1995)Several system identification algorithms have been proposed that make use of analytical models and measured modal data to determine the location and/or extent of structural damage. In particular, ... -
Recent Results in Random Vibrations of Nonlinear Mechanical Systems
(The American Society of Mechanical Engineers (ASME), 1995)The influence of random vibration on the design of mechanical components has been considered within the framework of the linear theory of small oscillations. However, in some important cases ... -
Concepts on an Integrated Design Approach to the Active Control of Structurally Radiated Noise (ASAC)
(The American Society of Mechanical Engineers (ASME), 1995)This work describes a range of issues relating to the implementation of active control for noise and vibration problems. It is important in the commercialization of this technology to consider ... -
Passive, Adaptive and Active Tuned Vibration Absorbers—A Survey
(The American Society of Mechanical Engineers (ASME), 1995)An overview of the recent development of tuned vibration absorbers (TVAs) for vibration and noise suppression is presented. The paper summarizes some popular theory for analysis and optimal ... -
Why Do Vortices Generate Sound?
(The American Society of Mechanical Engineers (ASME), 1995)Emphasizing physical pictures with a minimum of analysis, an introductory account is presented as to how vortices generate sound. Based on the observation that a vortex ring induces the same ... -
Lyapunov Stability, Semistability, and Asymptotic Stability of Matrix Second-Order Systems
(The American Society of Mechanical Engineers (ASME), 1995)Necessary and sufficient conditions for Lyapunov stability, semistability and asymptotic stability of matrix second-order systems are given in terms of the coefficient matrices. Necessary and ... -
Nonlinear Phenomena in Dynamic Response of Rotors in Anisotropic Mounting Systems
(The American Society of Mechanical Engineers (ASME), 1995)In a previous paper (Ehrich, 1994), the author has cataloged a variety of unique rotordynamic responses which have been observed in a computer model of a simple Jeffcott rotor in a nonlinear ... -
Optimum Design and Control of Active Constrained Layer Damping
(The American Society of Mechanical Engineers (ASME), 1995)Conventional Passive Constrained Layer Damping (PCLD) treatments with viscoelastic cores are provided with built-in sensing and actuation capabilities to actively control and enhance their vibration ... -
Friction Damping and Isolation Systems
(The American Society of Mechanical Engineers (ASME), 1995)This paper surveys the literature on the use of dry friction in passive damping and vibration isolation. Several analytical techniques are presented followed by applications from various areas. ... -
Eddy Current Effects on the Design of Rotor-Magnetic Bearing Systems
(The American Society of Mechanical Engineers (ASME), 1995)The recent growth of magnetic bearing applications in the chemical, utility and aerospace industries requires more accurate design tools to insure reliable and effective operation as components ... -
Energy Transfer from High-Frequency to Low-Frequency Modes in Structures
(The American Society of Mechanical Engineers (ASME), 1995)A perspective of the mechanisms by which energy is transferred from high- to low-frequency modes is presented. The focus is on some recent experiments that reveal how a low-amplitude high-frequency ... -
Design of Passive Damping Systems
(The American Society of Mechanical Engineers (ASME), 1995)This paper presents a brief review of techniques for designed-in passive damping for vibration control. Designed-in passive damping for structures is usually based on one of four damping ... -
Active and Semi-Active Vibration Isolation
(The American Society of Mechanical Engineers (ASME), 1995)In the five decades since the founding of the ASME Design Engineering Division, the important problem of vibration isolation has been attacked first through the design of passive spring-damper ...