Journal of Vibration and Acoustics: Recent submissions
Now showing items 1081-1100 of 3913
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Galloping of a Wind Excited Tower Under Internal Parametric Damping
(The American Society of Mechanical Engineers (ASME), 2014)The effect of harmonic internal parametric damping (IPD) on the amplitude and the onset of the periodic galloping of a tower is investigated in the presence of steady and unsteady wind. The structure is modeled by a lumped ... -
Probabilistic Solutions of Stochastic Oscillators Excited by Correlated External and Parametric White Noises
(The American Society of Mechanical Engineers (ASME), 2014)The stationary probability density function (PDF) solution of random oscillators with correlated additive and multiplicative Gaussian excitations is investigated in this paper. The correlation between additive and ... -
Modally Tuned Influence Coefficients for Low Speed Balancing of Flexible Rotors
(The American Society of Mechanical Engineers (ASME), 2014)The need to devise a lowspeed balancing method for balancing highspeed rotors was recognized and addressed. In this paper, a scheme that combines both the influence coefficients and modal balancing techniques is presented. ... -
Discussion: “Vibration Analysis of Composite Beams With End Effects Via the Formal Asymptotic Method†(Kim, J. S., and Wang, K. W., 2010, ASME J. Vib. Acoust., 132(4), p. 041003)
(The American Society of Mechanical Engineers (ASME), 2014) -
Elastodynamics of a Two Dimensional Square Lattice With Entrained Fluid—Part I: Comparison With Biot's Theory
(The American Society of Mechanical Engineers (ASME), 2014)In the present paper, the performance of Biot's theory is investigated for wave propagation in cellular and porous solids with entrained fluid for configurations with wellknown drained (no fluid) mechanical properties. ... -
The Scattering of Acoustic Wave by a Chain of Elastic Spheres in Liquid
(The American Society of Mechanical Engineers (ASME), 2014)The scattering of acoustic waves by a chain of elastic spheres in liquid is studied. The incident wave, the scattering wave in the host, and the transmitted waves (including longitudinal and transverse wave modes) in the ... -
Experimental Investigation and Design Optimization of Targeted Energy Transfer Under Periodic Forcing
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, the dynamic response of a harmonically forced linear oscillator (LO) strongly coupled to a nonlinear energy sink (NES) is investigated both theoretically and experimentally. The system studied comprises an ... -
Doppler Shift Removal Based on Instantaneous Frequency Estimation for Wayside Fault Diagnosis of Train Bearings
(The American Society of Mechanical Engineers (ASME), 2014)The phenomenon of Doppler shift in the acoustic signal acquired by a microphone amounted beside the railway leads to the difficulty for fault diagnosis of train bearings with a high moving speed. To enhance the condition ... -
Lagrangian Formulation and Numerical Solutions to Dump Truck Vibrations Under HISLO Conditions
(The American Society of Mechanical Engineers (ASME), 2014)Heavy mining machinery has exposed the human body to extreme vibrations that may limit the performance of operators and further impact the overall system performance. Large capacity shovels and dump trucks have been deployed ... -
Experimental and Numerical Studies on Spherical Roller Bearings Using Multivariable Regression Analysis
(The American Society of Mechanical Engineers (ASME), 2014)Many industries make wide use of rotor bearing systems such as high speed turbines and generators. However, the vibration of antifriction rotor–bearings is a key factor in reducing the life of the bearings; thus significantly ... -
Tuning of Bandgap Structures in Three Dimensional Kagome Sphere Lattice
(The American Society of Mechanical Engineers (ASME), 2014)In this manuscript, acoustic wave propagation in a novel threedimensional porous phononic crystalKagome lattice, is studied by using finite element method. Firstly, a Kagomesphere structure is established based on Kagome ... -
Eigenvalues and Eigenvalue Sensitivities of a Beam Supported by Viscoelastic Solids
(The American Society of Mechanical Engineers (ASME), 2014)The eigenvalues and the first and secondorder eigenvalue sensitivities of a uniform Euler–Bernoulli beam supported by the standard linear solid model for viscoelastic solids are studied in detail. A method is proposed ... -
Optimal Lumped Mass Matrices by Minimization of Modal Errors for Beam Elements
(The American Society of Mechanical Engineers (ASME), 2014)This paper clarifies the reason why error occurs in the mass lumping procedure and presents a new approach to construct lumped mass matrices for Euler–Bernoulli beam elements, which contain both translational and rotational ... -
True and Spurious Eigensolutions of an Elliptical Membrane by Using the Nondimensional Dynamic Influence Function Method
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, we employ the nondimensional dynamic influence function (NDIF) method to solve the free vibration problem of an elliptical membrane. It is found that the spurious eigensolutions appear in the Dirichlet problem ... -
Prospects for Nonlinear Energy Harvesting Systems Designed Near the Elastic Stability Limit When Driven by Colored Noise
(The American Society of Mechanical Engineers (ASME), 2014)Ambient vibration sources in many prime energy harvesting applications are characterized as having stochastic response with spectra concentrated at low frequencies and steadily reduced power density as frequency increases ... -
Numerical Investigation of the Flutter of a Spherical Shell
(The American Society of Mechanical Engineers (ASME), 2014)In this study, aeroelastic analysis of a spherical shell subjected to external supersonic airflow is carried out. The structural model is based on a combination of the linear spherical shell theory and the classic finite ... -
Determination of Transmission Loss in Slightly Distorted Circular Mufflers Using a Regular Perturbation Method
(The American Society of Mechanical Engineers (ASME), 2014)A perturbationbased approach is implemented to study the sound attenuation in distorted cylindrical mufflers with various inlet/outlet orientations. Study of the transmission loss (TL) in mufflers requires solution of the ... -
Nonlinear Dynamics of the Rod Fastened Jeffcott Rotor
(The American Society of Mechanical Engineers (ASME), 2014)Rodfastened rotors are composed of some disks clamped together by a central tie rod or several tie rods distributed along the circumference. Due to the nonlinear flexural stiffness of the contact interfaces in disks, ... -
Analytical Treatment With Rigid Elastic Vibration of Permanent Magnet Motors With Expanding Application to Cyclically Symmetric Power Transmission Systems
(The American Society of Mechanical Engineers (ASME), 2014)The phasing effect of the slot/magnet combination on rigidelastic vibration is addressed by incorporating the cyclic symmetry of permanent magnet (PM) motors. Expanding research is also carried out to achieve more general ... -
H2 Optimization of Damped Vibration Absorbers for Suppressing Vibrations in Beams With Constrained Minimization
(The American Society of Mechanical Engineers (ASME), 2014)Vibration absorbers are efficient and robust tools for reducing vibration and noise. Researchers use various alternative approaches and validate their methods with examples consisting of massspringdamper systems. Focusing ...