Journal of Vibration and Acoustics: Recent submissions
Now showing items 1021-1040 of 3913
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Free Vibration of Moderately Thick Conical Shells Using a Higher Order Shear Deformable Theory
(The American Society of Mechanical Engineers (ASME), 2014)The present study considers the free vibration analysis of moderately thick conical shells based on the Novozhilov theory. The higher order governing equations of motion and the associate boundary conditions are obtained ... -
Attenuation of Gas Pulsation in the Valve Chamber of a Reciprocating Compressor Using the Helmholtz Resonator
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents testing and analysis results associated with a new control method based on the Helmholtz resonator to suppress the pressure pulsations in the valve chamber and cylinder nozzle of a reciprocating compressor. ... -
Free Vibration of a Fluid Loaded Ring Stiffened Conical Shell With Variable Thickness
(The American Society of Mechanical Engineers (ASME), 2014)An analytical method is presented for the free vibration of a fluid loaded (submerged) ringstiffened conical shell with variable thickness in the low frequency range. Based on the Flأ¼gge theory and equivalent method of ... -
Analysis of Coupled Bending Torsional Vibration of Beams in the Presence of Uncertainties
(The American Society of Mechanical Engineers (ASME), 2014)Several methods are presented for the modeling and analysis of uncertain beams and other structural elements/systems. By representing each uncertain parameter as an interval number, the vibration problem associated with ... -
Mapping and Spectral Analysis of Acoustic Vibration in the Scanning Area of the Weak Field Magnetic Resonance Imager
(The American Society of Mechanical Engineers (ASME), 2014)The paper describes measurement and calculation of 2D distribution of the vibration signal originated by the gradient coil system of the magnetic resonance imaging (MRI) equipment. The measurement experiments were performed ... -
Nonlinear Vibration Analysis of an Elastic Rotor Supported on Angular Contact Ball Bearings Considering Six Degrees of Freedom and Waviness on Balls and Races
(The American Society of Mechanical Engineers (ASME), 2014)Nonlinear vibration analysis of an elastically deformable shaft supported on two lubricated angular contact ball bearings is reported herein considering sixdegrees of freedom (6DOF) and waviness on races and balls. This ... -
Models and Numerical Solutions of Generalized Oscillator Equations
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, we use three operators called K, A, and Boperators to define the equation of motion of an oscillator. In contrast to fractional integral and derivative operators which use fractional power kernels or their ... -
Attenuated Fractional Wave Equations With Anisotropy
(The American Society of Mechanical Engineers (ASME), 2014)This paper develops new fractional calculus models for wave propagation. These models permit a different attenuation index in each coordinate to fully capture the anisotropic nature of wave propagation in complex media. ... -
Cauchy and Signaling Problems for the Time Fractional Diffusion Wave Equation
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, some known and novel properties of the Cauchy and signaling problems for the onedimensional timefractional diffusionwave equation with the Caputo fractional derivative of order خ²,1≤خ²â‰¤2 are investigated. ... -
Special Section: Fractional Calculus in Vibration and Acoustics
(The American Society of Mechanical Engineers (ASME), 2014)This special section is motivated by our desire to bring together in one place a collection of articles that describe both the depth and breadth of fractional analysis in vibration and acoustics. The contributing researchers ... -
Finite Element Analysis of the Seismic Response of Damped Structural Systems Including Fractional Derivative Models
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents a finite element formulation for the seismic response of damped structural systems. Damping is obtained using a viscoelastic material, which is characterized by a constitutive law with fractional ... -
Comparison of Poroviscoelastic Models for Sound and Vibration in the Lungs
(The American Society of Mechanical Engineers (ASME), 2014)Noninvasive measurement of mechanical wave motion (sound and vibration) in the lungs may be of diagnostic value, as it can provide information about the mechanical properties of the lungs, which in turn are affected by ... -
Response Analysis of Acoustic Field With Convex Parameters
(The American Society of Mechanical Engineers (ASME), 2014)The acoustic field with convex parameters widely exists in the engineering practice. The vertex method and the antioptimization method are not considered as appropriated approaches for the response analysis of acoustic ... -
An Investigation of the Effect of Weatherstrip Seals on Vehicle Vibration and Acoustics Using an Alternative Modeling Technique
(The American Society of Mechanical Engineers (ASME), 2014)In this study, the effect of weatherstrip seals on panel vibrations and structure borne noise is studied. First, a test structure is built to model vehicle's body and door; hammer impact tests are carried out to determine ... -
Combined Feedforward–Feedback Active Control of Road Noise Inside a Vehicle Cabin
(The American Society of Mechanical Engineers (ASME), 2014)Conventional active control of road noise inside a vehicle cabin generally uses a pure feedforward control system with the conventional filteredx least mean square (FXLMS) algorithm. While it can yield satisfactory noise ... -
Free Vibration of a Multilayered One Dimensional Quasi Crystal Plate
(The American Society of Mechanical Engineers (ASME), 2014)An exact closedform solution of free vibration of a simply supported and multilayered onedimensional (1D) quasicrystal (QC) plate is derived using the pseudoStroh formulation and propagator matrix method. Natural frequencies ... -
Fuzzy Approximation by a Novel Levenberg–Marquardt Method for Two Degree of Freedom Hypersonic Flutter Model
(The American Society of Mechanical Engineers (ASME), 2014)The twodegreeoffreedom (2DOF) hypersonic flutter dynamical system has strong aeroelastic nonlinearities, and it is very difficult to obtain a more precise mathematical model. By considering varying learning rate and ... -
Transmission Loss of Variable Cross Section Apertures
(The American Society of Mechanical Engineers (ASME), 2014)Openings in enclosures or walls are frequently the dominant path for sound propagation. In the current work, a transfer matrix method is used to predict the transmission loss of apertures assuming that the crosssectional ... -
Detection of Nonlinearities in Plates Via Higher Order Spectra: Numerical and Experimental Studies
(The American Society of Mechanical Engineers (ASME), 2014)Higherorder spectral (HOS) analysis tools are employed to extract the nonlinear dynamic response features of elastic and laminated plates by using both physicsbased mechanical plate models and experimental data. Bispectral ... -
Analytical Prediction for Free Response of Rotationally Ring Shaped Periodic Structures
(The American Society of Mechanical Engineers (ASME), 2014)The inplane wave motion is analytically examined to address the stationary deflection, natural frequency splitting, and mode contamination of the rotationally ringshaped periodic structures (RRPS). The governing equation ...