Journal of Vibration and Acoustics: Recent submissions
Now showing items 941-960 of 3913
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Energy Harvesting Using an Array of Granules
(The American Society of Mechanical Engineers (ASME), 2015)In the last decade, there has been an increasing attention on the use of highly and weakly nonlinear solitary waves in engineering and physics. These waves can form and travel in nonlinear systems such as onedimensional ... -
A Closed Form Optimal Tuning of Mass Dampers for One Degree of Freedom Systems Under Rotating Unbalance Forcing
(The American Society of Mechanical Engineers (ASME), 2015)This paper is focused on the study of a vibrating system forced by a rotating unbalance and coupled to a tuned mass damper (TMD). The analysis of the dynamic response of the entire system is used to define the parameters ... -
Mitigation of Gear Mesh Frequency Noise Using a Hydrostatic Bearing
(The American Society of Mechanical Engineers (ASME), 2015)A proposed solution to reducing gear meshfrequency vibrations in a gearset involves the utilization of hydrostatic bearings placed in series, load wise, with the main support bearing. The hydrostatic bearings are expected ... -
Dynamic Analysis of a Motorized Spindle With Externally Pressurized Air Bearings
(The American Society of Mechanical Engineers (ASME), 2015)The purpose of this paper is to investigate the dynamic characteristics of a motorized spindle with externally pressurized air bearings. The externally pressurized air bearings consist of a journal bearing and a double pad ... -
Modeling and Characterization of Bio Inspired Hydro Acoustic Sensor
(The American Society of Mechanical Engineers (ASME), 2015)A biomimetic miniature underwater acoustic sensor is proposed and analyzed for the measurement of directivity of underwater sound propagation. Unlike a hydrophone array, which detects propagation direction by the arrival ... -
Damage Detection of Steel Beam Using Frequency Response Function Measurement Data and Fractal Dimension
(The American Society of Mechanical Engineers (ASME), 2015)Fractaldimensionbased signal processing has been extensively applied to various fields for nondestructive testing. The dynamic response signal can be utilized as an analytical tool to evaluate the structural health state ... -
The Pluviophone: Measuring Rainfall by Its Sound
(The American Society of Mechanical Engineers (ASME), 2015)Rainfall, one of the most important resources for all life and for the environment, is also the most difficult meteorological parameter to measure, mainly due to its nonstationnarity in space and time. Several powerful ... -
Vibration Analysis of Thin/Thick, Composites/Metallic Spinning Cylindrical Shells by Refined Beam Models
(The American Society of Mechanical Engineers (ASME), 2015)This paper evaluates the vibration characteristics of thin/thick rotating cylindrical shells made of metallic and composite materials. A previous theory of the authors is extended here to include the effects of geometrical ... -
One to One Nonlinear Internal Resonance of Sensor Diaphragm Under Initial Tension
(The American Society of Mechanical Engineers (ASME), 2015)In this paper, investigations into the nonlinear asymmetric vibrations of a pressure sensor diaphragm under initial tension are presented. A comprehensive mechanics model based on a plate with inplane tension is presented ... -
Modeling and Characterization of a Piezoelectric Energy Harvester Under Combined Aerodynamic and Base Excitations
(The American Society of Mechanical Engineers (ASME), 2015)This paper develops and validates an aeroelectromechanical model which captures the nonlinear response behavior of a piezoelectric cantilevertype energy harvester under combined galloping and base excitations. The harvester ... -
An Efficient Method for Tuning Oscillator Parameters in Order to Impose Nodes on a Linear Structure Excited by Multiple Harmonics
(The American Society of Mechanical Engineers (ASME), 2015)Undamped oscillators are often used to attenuate and control excess vibration in elastic structures. In this paper, vibration absorbers are used to impose nodes, i.e., points of zero vibration, along an arbitrarily supported ... -
Commanded Motion Optimization to Reduce Residual Vibration
(The American Society of Mechanical Engineers (ASME), 2015)Residual vibrations affect machines at the end of commanded motion and can cause a lengthening of the work cycle. The proposed work addresses to the reduction of this undesired phenomenon with an optimization approach based ... -
Response Sensitivity and the Assessment of Nonlinear Vibration Using a Nonlinear Lateral–Torsional Coupling Model of Vehicle Transmission System
(The American Society of Mechanical Engineers (ASME), 2015)The eigensensitivity analysis does not meet the increasing industrial requirements of the dynamic performance of a vehicle transmission system. To reduce vibration, it is necessary to include response sensitivity in the ... -
Damage Localization in Composite Structures Using Nonlinear Vibration Response Properties
(The American Society of Mechanical Engineers (ASME), 2015)Subsurface damage in composite materials is difficult to detect using visual techniques, and other current inspection methods lack the ability to perform quick, widearea inspections without the need for reference signatures ... -
Amplitudes Decay in Different Kinds of Nonlinear Oscillators
(The American Society of Mechanical Engineers (ASME), 2015)A transformation is employed to obtain expressions for the decay of the displacement, the velocity, and the energy for various forms of nonlinear oscillators. The equation of motion of the nonlinear oscillator is transformed ... -
Tapered Two Layer Broadband Vibration Energy Harvesters
(The American Society of Mechanical Engineers (ASME), 2015)Twolayer piezoelectric vibration energy harvesters using convergent and divergent tapered structures have been developed for broadband power output. The harvesters consist of a base cantilevered beam, which is attached to ... -
Vibration and Acoustic Analysis of Trussed Railroad Bridge Under Moving Loads
(The American Society of Mechanical Engineers (ASME), 2015)A finite element (FE) model was developed for a Pratt truss railroad bridge located at Ft. Leonard Wood, MO. This model was used to investigate the vibration responses of a bridge under vehicle loading. Modeling results ... -
Assessing the Effects of Impedance Modifications Using the Moebius Transformation
(The American Society of Mechanical Engineers (ASME), 2015)The Moebius transformation maps straight lines or circles in one complex domain into straight lines or circles in another. It has been observed that the equations relating acoustic or mechanical impedance modifications to ... -
Targeted Energy Transfer Under Harmonic Forcing With a Vibro Impact Nonlinear Energy Sink: Analytical and Experimental Developments
(The American Society of Mechanical Engineers (ASME), 2015)Recently, it has been demonstrated that a vibroimpact type nonlinear energy sink (VINES) can be used efficiently to mitigate vibration of a linear oscillator (LO) under transient loading. The objective of this paper is to ... -
Experimental Analysis of a Vertical and Flexible Cylinder in Water: Response to Top Motion Excitation and Parametric Resonance
(The American Society of Mechanical Engineers (ASME), 2015)Experiments with a vertical, flexible, and submerged cylinder were carried out to investigate fundamental aspects of risers dynamics subjected to harmonic excitation at the top. The flexible model was designed aiming a ...