Journal of Vibration and Acoustics: Recent submissions
Now showing items 1401-1420 of 3913
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A New Type of Muffler Based on Microperforated Tubes
(The American Society of Mechanical Engineers (ASME), 2011)Microperforated plate (MPP) absorbers are perforated plates with holes typically in the submillimeter range and perforation ratios around 1%. The values are typical for applications in air at ... -
Quantify Resonance Inspection With Finite Element-Based Modal Analyses
(The American Society of Mechanical Engineers (ASME), 2011)Resonance inspection uses the natural acoustic resonances of a part to identify anomalous parts. Modern instrumentation can measure the many resonant frequencies rapidly and accurately. Sophisticated ... -
Analysis of Bloch’s Method and the Propagation Technique in Periodic Structures
(The American Society of Mechanical Engineers (ASME), 2011)Bloch analysis was originally developed by Bloch to study the electron behavior in crystalline solids. His method has been adapted to study the elastic wave propagation in periodic structures. ... -
Reduction of the Sound Pressure Radiated by a Submarine by Isolation of the End Caps
(The American Society of Mechanical Engineers (ASME), 2011)A passive isolation approach to reduce the sound pressure radiated by a submarine is presented. The submerged vessel is modeled as a stiffened cylindrical hull partitioned by bulkheads and with ... -
Acoustic Waves in Two-Dimensional Phononic Crystals With Reticular Geometric Structures
(The American Society of Mechanical Engineers (ASME), 2011)Previous studies on photonic crystals raise the exciting topic of phononic crystals. This paper presents the results of tunable band gaps in the acoustic waves of two-dimensional phononic crystals ... -
Direct Nondestructive Algorithm for Shape Defects Evaluation
(The American Society of Mechanical Engineers (ASME), 2011)An efficient numerical method based on a rigorous integral formulation is used to calculate precisely the acoustic eigenvalues of complex shaped objects and their associated eigenvectors. These ... -
Frequency Response of Cylindrical Resonators in a Viscous Fluid
(The American Society of Mechanical Engineers (ASME), 2011)The frequency response of a cylinder in a viscously damped fluid is a problem of fundamental engineering interest, with applications ranging from microsystems to offshore structures. The analytic ... -
A New Magnetorheological Mount for Vibration Control
(The American Society of Mechanical Engineers (ASME), 2011)In this study, the performance of a new controllable mount design utilizing a magnetorheological material encapsulated in an elastomer matrix is investigated. A magnetorheological fluid-elastomer ... -
Analytical and Experimental Investigation of Self-Loosening of Preloaded Cap Screw Fasteners
(The American Society of Mechanical Engineers (ASME), 2011)In an effort to establish a theoretical outline of a criterion for preventing the vibration-induced loosening of preloaded threaded fasteners, this paper provides an experimental and analytical ... -
A Coupled Homotopy-Variational Method and Variational Formulation Applied to Nonlinear Oscillators With and Without Discontinuities
(The American Society of Mechanical Engineers (ASME), 2011)In this paper, two novel and different methods are applied to nonlinear oscillators. It has been found that the coupled method of homotopy perturbation method and variational formulation and ... -
Application of Algorithms for Percentiles of von Mises Stress From Combined Random Vibration and Static Loadings
(The American Society of Mechanical Engineers (ASME), 2011)Gaussian time-varying loading induces Gaussian components of the stress tensor in a linear structure, where the loading is assumed stationary. For any stress component, finite element spectrum ... -
Dynamic Performance of the LeBlanc Balancer for Automatic Washing Machines
(The American Society of Mechanical Engineers (ASME), 2011)The paper describes a high-speed camera and a particle image velocimetry (PIV) technique used on a transparent liquid balancing device for washing machines. Experimental results indicate that the ... -
Flow and Pressure Drop Calculation Using Two-Ports
(The American Society of Mechanical Engineers (ASME), 2011)Exhaust systems should be carefully designed for different applications. The main objective of an exhaust system is to reduce the engine noise. Maximum noise reduction is usually desired to the ... -
Criterion for Preventing Self-Loosening of Preloaded Cap Screws Under Transverse Cyclic Excitation
(The American Society of Mechanical Engineers (ASME), 2011)In this paper, a novel criterion is developed for preventing the self-loosening of preloaded threaded cap screws under cyclic transverse loading. For a known cyclic excitation, the system ... -
A New Model for Estimating Vibrations Generated in the Defective Rolling Element Bearings
(The American Society of Mechanical Engineers (ASME), 2011)Prediction of the vibration response due to defects on rolling element bearings requires having an accurate representative vibration model. In this paper, a new model for vibration generation ... -
Application of a Negative Capacitance Circuit in Synchronized Switch Damping Techniques for Vibration Suppression
(The American Society of Mechanical Engineers (ASME), 2011)In the synchronized switching damping (SSD) techniques, the voltage on the piezoelectric element is switched synchronously with the vibration to be controlled using an inductive shunt circuit ... -
In-Plane Free Vibrations of an Inclined Taut Cable
(The American Society of Mechanical Engineers (ASME), 2011)The investigation of the free vibrations of inclined taut cables has been a significant subject due to their wide applications in various engineering fields. For this subject, accurate analytical ... -
Optimization Based Identification of the Dynamic Properties of Linearly Viscoelastic Materials Using Vibrating Beam Technique
(The American Society of Mechanical Engineers (ASME), 2011)Sandwich structures with viscoelastic core and metal face sheets are increasingly used in automotive industry to significantly reduce the amplitude of vibration and noise radiation. Several ... -
Design and Analysis of a New Type of Electromagnetic Damper With Increased Energy Density
(The American Society of Mechanical Engineers (ASME), 2011)Eddy current dampers, or electromagnetic dampers, have advantages of no mechanical contact, high reliability, and stability, but require a relatively large volume and mass to attain a given ... -
Investigations on the Rotordynamic Characteristics of a Hole-Pattern Seal Using Transient CFD and Periodic Circular Orbit Model
(The American Society of Mechanical Engineers (ASME), 2011)Numerical investigations on the rotordynamic characteristics of a typical hole-pattern seal using transient three-dimensional Reynolds-averaged Navier–Stokes (RANS) solution and the periodic circular ...