Journal of Vibration and Acoustics: Recent submissions
Now showing items 601-620 of 3913
-
Targeted Energy Transfer From One Acoustical Mode to an Helmholtz Resonator With Nonlinear Behavior
(The American Society of Mechanical Engineers (ASME), 2018)Targeted energy transfer from one acoustical mode to a Helmholtz resonator (HR) with nonlinear behaviors is studied. For the HR, nonlinear restoring forces and nonlinear damping are taken into account. A time multiple scale ... -
Identification of Energy Dissipation in Structural Joints by Means of the Energy Flow Analysis
(The American Society of Mechanical Engineers (ASME), 2018)In this paper, identification of energy dissipation in the joints of a lab-scale structure is accomplished. The identification is carried out by means of an energy flow analysis and experimental data. The devised procedure ... -
Complexification-Averaging Analysis on a Giant Magnetostrictive Harvester Integrated With a Nonlinear Energy Sink
(The American Society of Mechanical Engineers (ASME), 2018)The present study aims to investigate the steady-state response regimes of a device comprising a nonlinear energy sink (NES) and a giant magnetostrictive energy harvester utilizing analytical approximation. The ... -
Transmissibility of Bending Vibration of an Elastic Beam
(The American Society of Mechanical Engineers (ASME), 2018)This paper proposes an isolation transmissibility for the bending vibration of elastic beams. At both ends, the elastic beam is considered with vertical spring support and free to rotate. The geometric nonlinearity is ... -
Dynamic Flexoelectric Actuation and Vibration Control of Beams
(The American Society of Mechanical Engineers (ASME), 2018)A flexoelectric cantilever beam actuated by the converse flexoelectric effect is evaluated and its analytical and experimental data are compared in this study. A line-electrode on the top beam surface and a bottom surface ... -
A New Delayed Resonator Design Approach for Extended Operable Frequency Range
(The American Society of Mechanical Engineers (ASME), 2018)The operable frequency range of the delayed resonators (DR) is known to be narrow due to stability issues. This study presents a novel approach for DR design with a combined feedback strategy that consists of a delayed ... -
Actuation of Higher Harmonics in Large Arrays of Micromechanical Cantilevers for Expanded Resonant Peak Separation
(The American Society of Mechanical Engineers (ASME), 2018)A large array of elastically coupled micro cantilevers of variable length is studied experimentally and numerically. Full-scale finite element (FE) modal analysis is implemented to determine the spectral behavior of the ... -
New Methodology for Optimal Placement of Piezoelectric Sensor/Actuator Pairs for Active Vibration Control of Flexible Structures
(The American Society of Mechanical Engineers (ASME), 2018)This paper describes a computationally efficient method to determine optimal locations of sensor/actuator (s/a) pairs for active vibration reduction of a flexible structure. Previous studies have tackled this problem using ... -
A Novel Method for the Design of Proximity Sensor Configuration for Rotor Blade Tip Timing
(The American Society of Mechanical Engineers (ASME), 2018)Blade tip timing (BTT) is a noncontact method for measuring turbomachinery blade vibration. Proximity sensors are mounted circumferentially around the turbomachine casing and used to measure the tip displacements of blades ... -
Energy Harvesting From the Vibrations of Rotating Systems
(The American Society of Mechanical Engineers (ASME), 2018)This study investigates the vibration of and power harvested by typical electromagnetic and piezoelectric vibration energy harvesters when applied to vibrating host systems that rotate at constant speed. The governing ... -
Underwater Dynamic Response at Limited Points Expanded to Full-Field Strain Response
(The American Society of Mechanical Engineers (ASME), 2018)Expansion of real-time operating data from limited measurements to obtain full-field displacement data has been performed for structures in air. This approach has shown great success, and its main advantage is that the ... -
Non-Model-Based Identification of Delamination in Laminated Composite Plates Using a Continuously Scanning Laser Doppler Vibrometer System
(The American Society of Mechanical Engineers (ASME), 2018)Delamination frequently occurs in a laminated composite structure and can cause prominent local anomalies in curvature vibration shapes associated with vibration shapes of the composite structure. Spatially dense vibration ... -
Sound Radiation From Point Acoustic Sources With Shield of Large Prolate Spheroidal Baffles
(The American Society of Mechanical Engineers (ASME), 2018)Sound radiation from stationary and rotating point acoustic sources with shield of rigid prolate spheroidal baffles is explored in the prolate spheroidal coordinate system. The formulae of far-field sound pressure and ... -
Robust Balancing Approach for Rotating Machines Based on Fuzzy Logic
(The American Society of Mechanical Engineers (ASME), 2018)Unbalance is one of the most common malfunctions found in rotating machines generating high vibration amplitudes that can lead to fatigue and wear of rotor elements. There are several well-known balancing techniques wherein ... -
Output-Only Damage Identification Using Enhanced Structural Characteristic Deflection Shapes and Adaptive Gapped Smoothing Method
(The American Society of Mechanical Engineers (ASME), 2018)Structural characteristic deflection shapes (CDSs) such as mode shapes which contain spatial knowledge of structures are highly sensitive for damage detection and localization. Nevertheless, CDSs are vulnerable to measurement ... -
Derived Nodes Approach for Improving Accuracy of Machining Stability Prediction
(The American Society of Mechanical Engineers (ASME), 2018)Machining process dynamics can be described by state-space delayed differential equations (DDEs). To numerically predict the process stability, diverse piecewise polynomial interpolation is often utilized to discretize the ... -
Nonlinear Vibrations Analysis of Overhead Power Lines: A Beam With Mass–Spring–Damper–Mass Systems
(The American Society of Mechanical Engineers (ASME), 2018)This paper examines the nonlinear vibration of a single conductor with Stockbridge dampers. The conductor is modeled as a simply supported beam and the Stockbridge damper is reduced to a mass–spring–damper–mass system. The ... -
Free Vibration of Thin Shallow Elliptical Shells
(The American Society of Mechanical Engineers (ASME), 2018)This research presents a study of the free vibration of thin, shallow elliptical shells. The equations of motion for the elliptical shell, which are developed from Love's equations, are coupled and nonlinear. In this ... -
Free Vibration of Doubly Curved Thin Shells
(The American Society of Mechanical Engineers (ASME), 2018)While several numerical approaches exist for the vibration analysis of thin shells, there is a lack of analytical approaches to address this problem. This is due to complications that arise from coupling between the ... -
A Comparison of Equivalent Source Method and Monopole Time Reversal Method for Noise Source Localization
(The American Society of Mechanical Engineers (ASME), 2018)The equivalent source method (ESM) and monopole time reversal method (MTRM) are two popular techniques for noise source localization. These two methods have some similar characteristics, such as using the pressure field ...