Journal of Vibration and Acoustics: Recent submissions
Now showing items 1321-1340 of 3913
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Failure Diagnosis of a Gear Box by Recurrences
(The American Society of Mechanical Engineers (ASME), 2012)The recurrence analysis method is used in the mechanical diagnosis of a gear transmission system using time domain data. The recurrence is a natural behavior of a periodic motion system, which ... -
Application of the Nondimensional Dynamic Influence Function Method for Free Vibration Analysis of Arbitrarily Shaped Membranes
(The American Society of Mechanical Engineers (ASME), 2012)A new formulation for the NDIF method (the nondimensional dynamic influence function method) is introduced to efficiently extract eigenvalues and mode shapes of arbitrarily shaped, homogeneous ... -
Percentiles of von Mises Stress from Combined Random Vibration and Static Loading by Approximate Noncentral Chi Square Distribution
(The American Society of Mechanical Engineers (ASME), 2012)Firstly, a calculation for percentiles of von Mises stress in linear structures subjected to Gaussian random loads is extended to the case of Gaussian random loads having nonzero mean values, ... -
A Genetic Algorithms Method for Fitting the Generalized Bouc-Wen Model to Experimental Asymmetric Hysteretic Loops
(The American Society of Mechanical Engineers (ASME), 2012)The Bouc-Wen class models are widely used to portray different types of hysteretic behavior. This paper presents an effective genetic algorithms-based method for fitting a generalized Bouc-Wen ... -
The Response of Infinite Strings and Beams to an Initially Applied Moving Force: Analytical Solution
(The American Society of Mechanical Engineers (ASME), 2012)This paper presents the analytical solutions for bilaterally infinite strings and infinite beams on which a point force is initially applied, which then moves on the structure at a constant ... -
Multi-Modal Vibration Energy Harvesting Using a Trapezoidal Plate
(The American Society of Mechanical Engineers (ASME), 2012)Vibration-based energy harvesters are usually designed to exhibit natural frequencies that match those of the excitation for maximum power output. This has spurred interest into the design of ... -
Probabilistic Solutions of the Stochastic Oscillators With Even Nonlinearity in Displacement
(The American Society of Mechanical Engineers (ASME), 2012)The probabilistic solutions of the nonlinear stochastic oscillators with even nonlinearity in displacement are investigated with the exponential-polynomial closure method. Numerical results show that ... -
Dynamic Analysis of Circular Cylindrical Shells With General Boundary Conditions Using Modified Fourier Series Method
(The American Society of Mechanical Engineers (ASME), 2012)Dynamic behavior of cylindrical shell structures is an important research topic since they have been extensively used in practical engineering applications. However, the dynamic analysis of circular ... -
Development of an Inverse Algorithm for Resonance Inspection
(The American Society of Mechanical Engineers (ASME), 2012)Resonance inspection (RI), which employs the natural frequency spectra shift between the good and the anomalous part populations to detect defects, is a nondestructive evaluation (NDE) technique ... -
On Power Flow Suppression in Straight Elastic Pipes by Use of Equally Spaced Eccentric Inertial Attachments
(The American Society of Mechanical Engineers (ASME), 2012)The paper addresses the power flow suppression in an elastic beam of the tubular cross section (a pipe) at relatively low excitation frequencies by deploying a small number of equally spaced ... -
Nonlinear Dynamic of a Geared Rotor System With Nonlinear Oil Film Force and Nonlinear Mesh Force
(The American Society of Mechanical Engineers (ASME), 2012)To investigate the effect of oil film force on a geared rotor system, a short journal bearing model was applied to represent nonlinear oil film force. A dynamic model of the geared rotor ... -
A Physics-Based Friction Model and Integration to a Simple Dynamical System
(The American Society of Mechanical Engineers (ASME), 2012)Dynamical modeling and simulation of mechanical structures containing jointed interfaces require reduced-order fretting models for efficiency. The reduced-order models in the literature compromise ... -
Propagation of Spacecraft Free-Interface Substructure Uncertainty Into System Test-Analysis Correlation
(The American Society of Mechanical Engineers (ASME), 2012)As space structures become larger and more complex, ground based vibration tests of the entire spacecraft become either problematic or impossible. Instead, the spacecraft is tested and validated ... -
Reduced Order Models for Blade-To-Blade Damping Variability in Mistuned Blisks
(The American Society of Mechanical Engineers (ASME), 2012)A novel reduced order modeling methodology to capture blade-to-blade variability in damping in blisks is presented. This new approach generalizes the concept of component mode mistuning (CMM), ... -
Computational Model for Investigating the Influence of Unbalanced Magnetic Pull on the Radial Vibration of Large Hydro-Turbine Generators
(The American Society of Mechanical Engineers (ASME), 2012)A radial unbalanced magnetic pull (UMP) can be produced by an eccentric rotor and leads vibrations in large hydro-turbine generators. The influence of nonlinear UMP on the radial vibration of ... -
Homogeneous Material Constructed Acoustic Cloak Based on Coordinate Transformation
(The American Society of Mechanical Engineers (ASME), 2012)The two-dimensional and three-dimensional acoustic cloaks composed of homogeneous and nonsingular materials are designed by choosing appropriate spatial transformation. The mass density tensor and ... -
Improving the Patch Transfer Function Approach for Fluid-Structure Modelling in Heavy Fluid
(The American Society of Mechanical Engineers (ASME), 2012)The vibro-acoustic behavior of elastic structures coupled with cavities filled with a heavy fluid can be modeled by using the Finite Element Method. In order to reduce computing time, the Patch ... -
Forced Vibrations of Supercritically Transporting Viscoelastic Beams
(The American Society of Mechanical Engineers (ASME), 2012)This study focuses on the steady-state periodic response of supercritically transporting viscoelastic beams. In the supercritical speed range, forced vibrations are investigated for traveling beams ... -
Acoustic Source Data for Medium Speed IC-Engines
(The American Society of Mechanical Engineers (ASME), 2012)Knowledge of the acoustic source characteristics of internal combustion engines (IC-engines) is of great importance when designing the exhaust duct system and its components to withstand the ... -
Stochastic Analysis of the Eigenvalue Problem for Mechanical Systems Using Polynomial Chaos Expansion— Application to a Finite Element Rotor
(The American Society of Mechanical Engineers (ASME), 2012)This paper proposes to use a polynomial chaos expansion approach to compute stochastic complex eigenvalues and eigenvectors of structures including damping or gyroscopic effects. Its application ...