Journal of Vibration and Acoustics: Recent submissions
Now showing items 581-600 of 3913
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Investigation of the Stability of a Squeak Test Apparatus Based on an Analytical and Finite Element Models
(The American Society of Mechanical Engineers (ASME), 2018)Squeak is an unwanted, annoying noise generated by self-excited, friction-induced vibration. A unique squeak test apparatus that can generate squeak noises consistently was developed by modifying and employing a sprag-slip ... -
Mechanical and Acoustic Performance of Sandwich Panels With Hybrid Cellular Cores
(The American Society of Mechanical Engineers (ASME), 2018)Sandwich structures that are embedded with cellular materials show excellent performance in terms of mechanics, electromagnetics, and acoustics. In this paper, sandwich panels with hybrid cellular cores of hexagonal, ... -
Rotordynamics of a Highly Flexible Hub for Inside-Out Ceramic Turbine Application: Finite Element Modeling and Experimental Validation
(The American Society of Mechanical Engineers (ASME), 2018)The inside-out ceramic turbine (ICT) is a promising concept to increase turbine inlet temperatures in microturbines by integrating individual monolithic ceramic. This architecture uses a carbon–polymer composite rim to ... -
Dynamics of a Shell-Type Amplified Piezoelectric Actuator
(The American Society of Mechanical Engineers (ASME), 2018)A dynamic model for a shell-type amplified piezoelectric actuator (APA) is proposed. The dimensions of the shell of a typical shell-type actuator allow one to model it as a set of connected beams. The contribution of the ... -
Rotordynamic Stability Effects of Shrouded Centrifugal Impellers With Combined Whirl and Precession
(The American Society of Mechanical Engineers (ASME), 2018)Whirling (translational) and precession (tilt) motion of the shrouded centrifugal impeller are possible vibration sources that can cause rotordynamic instability problems. Whirling motion of shrouded impellers and seals ... -
Nonlinear Dynamic Modeling of the Cracked Rotor Ball Bearing System With Emphasis on Damage Detection Capabilities
(The American Society of Mechanical Engineers (ASME), 2018)It is confirmed experimentally that in case of a rotor with crack, multiple harmonics are generated when the rotor revolves at a particular frequency. Only few modeling techniques successfully predict this particular ... -
Utilization of a Two-Beam Cantilever Array for Enhanced Atomic Force Microscopy Sensitivity
(The American Society of Mechanical Engineers (ASME), 2018)An array of cantilevers offers an alternative approach to standard single beam measurement in the context of atomic force microscopy (AFM). In comparison to a single beam, a multi-degrees-of-freedom system offers a greater ... -
Three-Element Vibration Absorber–Inerter for Passive Control of Single-Degree-of-Freedom Structures
(The American Society of Mechanical Engineers (ASME), 2018)In this study, a novel passive vibration control device, the three-element vibration absorber–inerter (TEVAI) is proposed. Inerter-based vibration absorbers, which utilize a mass that rotates due to relative translational ... -
Surrogate Model Based Liner Optimization for Aeroengines and Comparison With Finite Elements
(The American Society of Mechanical Engineers (ASME), 2018)Numerical optimizations are very useful in liner designs for low-noise aeroengines. Although modern computational tools are already very efficient for a single aeroengine noise propagation simulation run, the prohibitively ... -
Nonlinear Analysis of a Torsional Vibration of a Multidegrees-of-Freedom System With Centrifugal Pendulum Vibration Absorbers and Its Suppression
(The American Society of Mechanical Engineers (ASME), 2018)Centrifugal pendulum vibration absorber (CPVA) has been used as a torsional vibration suppression device. Recently, downsizing turbotechnology is widespread and it causes a torsional vibration in the drivetrains of ... -
Nonlinear Vibrations of Buried Rectangular Plate
(The American Society of Mechanical Engineers (ASME), 2018)We perform an investigation on the vibration response of a simply supported plate buried in glass particles, focusing on the nonlinear dynamic behaviors of the plate. Various excitation strategies, including constant-amplitude ... -
Theoretical Analysis and Experimental Identification of a Vibration Isolator With Widely-Variable Stiffness
(The American Society of Mechanical Engineers (ASME), 2018)This paper develops an adjustable high-static-low-dynamic (AHSLD) vibration isolator with a widely variable stiffness. By adjusting deformations of its horizontal springs, the natural frequency of the isolator can be ... -
Extended Smooth Orthogonal Decomposition for Modal Analysis
(The American Society of Mechanical Engineers (ASME), 2018)The smooth orthogonal decomposition (SOD) is an output-only modal analysis method, which has simple structure and gives good results for undamped or lightly damped vibration systems. In the present study, the SOD method ... -
Nonlinear Finite Element Analysis of Transient Behavior of Delaminated Composite Plate
(The American Society of Mechanical Engineers (ASME), 2018)The internal debonding effects on implicit transient responses of the shear deformable layered composite plate under the mechanical transverse (uniform and sinusoidal) loading are analyzed in this article. The physics of ... -
Application of Inverse Patch Transfer Functions Method With Wideband Holography Algorithm to Sparsely Distributed Sources Identification
(The American Society of Mechanical Engineers (ASME), 2018)Inverse patch transfer functions (iPTF) method has been developed to reconstruct the sound field of irregularly shaped sources in a noisy environment. The iPTF method, which uses classic regularization methods to solve the ... -
Rolling Element Bearing Diagnostics Using Extended Phase Space Topology
(The American Society of Mechanical Engineers (ASME), 2018)This paper introduces a novel method called extended phase space topology (EPST) for machinery diagnostics and pattern recognition. In particular, the research focuses on fault detection and diagnostics of rolling element ... -
Ultraviolet-Activated Frequency Control of Beams and Plates Based on Isogeometric Analysis
(The American Society of Mechanical Engineers (ASME), 2018)A new light-activated shape memory polymer (LaSMP) smart material exhibits shape memory behaviors and stiffness variation via ultraviolet (UV) light exposures. This dynamic stiffness provides a new noncontact actuation ... -
The Use of Damping Based Semi-Active Control Algorithms in the Mechanical Smart-Spring System
(The American Society of Mechanical Engineers (ASME), 2018)In recent decades, semi-active control strategies have been investigated for vibration reduction. In general, these techniques provide enhanced control performance when compared to traditional passive techniques and lower ... -
Incoherent Waves in Fluid-Saturated Sintered Granular Systems: Scattering Phenomena
(The American Society of Mechanical Engineers (ASME), 2018)The incoherent transport of ultrasound waves in water-saturated sintered glass bead packings is experimentally investigated. The spectral energy density of scattered high-frequency waves is explained by a diffusion wave ... -
An Experimental Characterization of the Impedance and Spectral Content of Multistable Structural Responses During Dynamic Bifurcations
(The American Society of Mechanical Engineers (ASME), 2018)The ability to predict multistable structural dynamics challenges the development of future high-performance air vehicles that will be subjected to extreme multiphysics loads. To aid in the establishment of methodologies ...