Journal of Vibration and Acoustics: Recent submissions
Now showing items 361-380 of 3913
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Calibration and Balancing of Multiple Tuned Mass Absorbers for Damping of Coupled Bending-Torsion Beam Vibrations
(The American Society of Mechanical Engineers (ASME), 2020)For damping of fully coupled beam vibrations, a three-component tuned mass absorber is proposed, consisting of two translational and a single-rotational absorber, which together target a specific vibration mode. The ... -
Experimental Characterization of High-Amplitude Fluid–Structure Interaction of a Flexible Hydrofoil at High Reynolds Number
(The American Society of Mechanical Engineers (ASME), 2020)A fluid–structure interaction (FSI) experiment was performed to study low-frequency (∼10 Hz), high-amplitude (±3.5% of the span) fin motion. This was achieved by placing an Inconel swept-fin at −9.6 deg angle-of-attack ... -
Experimental and Simulation Study on the Response Characteristics of Engine Blades Under Thermo-Acoustic-Vibration Load
(The American Society of Mechanical Engineers (ASME), 2020)Thermal, acoustic, and vibration loads are important to affect the strength and durability of many aerospace products, especially the compressor blades, solar wings, antennas, etc. In extreme cases, a strong acoustic load ... -
Approaches to Predicting the Vertical Transmissibility of a Suspension Seat With a Seated Subject
(The American Society of Mechanical Engineers (ASME), 2020)In this paper, four methods were put forward to predict the transmissibility of an air suspension seat with a seated subject. For characterizing the dynamics of the suspension seat, two of the methods were based on developing ... -
System Parameter Optimization for a Frequency-Up-Conversion Piezoelectric Energy Harvester With Backward Mechanical-Electric Coupling Effect
(The American Society of Mechanical Engineers (ASME), 2020)In this work, a parametric model for a frequency-up-conversion piezoelectric energy harvester (PEH) was developed based on the Galerkin method. The PEH is composed of a piezoelectric bimorph and a stopper, which was subjected ... -
Modal and Forced Response Analysis of Vehicle Systems With Latent Vibration Modes Due to Hydraulic Mounts
(The American Society of Mechanical Engineers (ASME), 2020)Hydraulic mounts used in vehicles for better isolation of vibrations were often approximated by lumped or mechanical mass-damper-spring (m-c-k) models, although deficiency in such modeling was pointed out and “hydraulic” ... -
Optimized Perforation Schemes in Railway Wheels Toward Acoustic Radiation Mitigation
(The American Society of Mechanical Engineers (ASME), 2020)Rolling noise emitted by railway wheels is a problem that affects human health and limits the expansion of the railway network. It is caused by the wheel vibration due to the wheel-rail contact force, and it is important ... -
Experimental Characterization of the Electrostatic Levitation Force in MEMS Transducers
(The American Society of Mechanical Engineers (ASME), 2020)In this study, a two-step experimental procedure is described to determine the electrostatic levitation force in micro-electromechanical system transducers. In these two steps, the microstructure is excited quasi-statically ... -
Multi-Direction Vibration Isolator for Momentum Wheel Assemblies
(The American Society of Mechanical Engineers (ASME), 2020)Momentum wheel assemblies (MWAs) play an important role in the attitude adjustment of the satellite by momentum exchange. The micro-vibration induced by the MWAs affects attitude adjustment and leads to unclear imaging and ... -
Determination of Coupling Loss Factors Between Two Plates Joined at a Right Angle Using the Wave Approach
(The American Society of Mechanical Engineers (ASME), 2020)Vibration transmission through two homogenous isotropic plates, joined at a right angle to each other, is studied using a wave approach in the audible frequency range. In this study, a generalized mathematical model is ... -
The Static Instability Characteristics of Labyrinth Seals: Experiments and Computational Fluid Dynamics Verification
(The American Society of Mechanical Engineers (ASME), 2020)The paper proposed an experimental measurement to identify the fluid-induced force and static stiffness coefficients. A three-dimensional fluid model of the labyrinth seals was also established. And the static characteristics ... -
Mechanical Energy and Equivalent Viscous Damping for Fractional Zener Oscillator
(The American Society of Mechanical Engineers (ASME), 2020)This paper presents mechanical energy and equivalent viscous damping for a single-degree-of-freedom fractional Zener oscillator. Differential equation of motion is derived in terms of fractional Zener constitutive equation ... -
Static Nodes of an Axially Moving String With Time-Varying Supports
(The American Society of Mechanical Engineers (ASME), 2020)By investigating the transverse vibrations of an axially moving string with time-varying supports, the existence and the pattern of static nodes are studied based on the assumed mode method and the linear superposition ... -
Dynamic Response of Fractionally Damped Viscoelastic Plates Subjected to a Moving Point Load
(The American Society of Mechanical Engineers (ASME), 2020)The dynamic response of fractionally damped viscoelastic plates subjected to a moving point load is investigated. In order to capture the viscoelastic dynamic behavior more accurately, the material is modeled using the ... -
Numerical Modeling of Static and Rotordynamic Characteristics for Three Types of Helically Grooved Liquid Annular Seals
(The American Society of Mechanical Engineers (ASME), 2020)This paper deals with numerical predictions of the leakage flowrates, drag power, and rotordynamic force coefficients for three types of helically grooved liquid annular seals, which include a liquid annular seal with ... -
A Spatial and Temporal Harmonic Balance Method for Obtaining Periodic Solutions of a Nonlinear Partial Differential Equation With a Linear Complex Boundary Condition
(The American Society of Mechanical Engineers (ASME), 2020)A spatial and temporal harmonic balance (STHB) method is demonstrated in this work by solving periodic solutions of a nonlinear string equation with a linear complex boundary condition, and stability analysis of the solutions ... -
Influence Analysis of Narrowband Random Sweep Range Setup in Mixed Mode Vibration Test
(The American Society of Mechanical Engineers (ASME), 2020)Sweeping narrowband random on broadband random (RoR) is a common vibration test method. However, different vibration controllers have different definitions on a sweep frequency range of narrowband. Some controllers define ... -
Revealing the Linear and Nonlinear Dynamic Behaviors of Metabeams With a Dynamic Homogenization Model
(The American Society of Mechanical Engineers (ASME), 2020)Metastructures can be designed to exhibit extraordinary properties and thus are widely applicable in various fields, such as vibration suppression, wave control, and energy harvesting. In the present work, a dynamic ... -
A Re-Examination of Various Resonances in Parametrically Excited Systems1
(The American Society of Mechanical Engineers (ASME), 2020)The dynamics of parametrically excited systems are characterized by distinct types of resonances including parametric, combination, and internal. Existing resonance conditions for these instability phenomena involve natural ... -
Investigation on Impact Response Feature of Railway Vehicles With Wheel Flat Fault Under Variable Speed Conditions
(The American Society of Mechanical Engineers (ASME), 2020)Wheel faults are the main causes of safety issues in railway vehicles. The modeling and analysis of wheel faults is crucial for determining and studying the dynamic characteristics of railway vehicles under variable speed ...