Journal of Vibration and Acoustics: Recent submissions
Now showing items 561-580 of 3913
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Vibration Instability in a Large Motion Bistable Compliant Mechanism Due to Stribeck Friction
(The American Society of Mechanical Engineers (ASME), 2018)The present paper investigates friction-induced self-excited vibration of a bistable compliant mechanism. A pseudo-rigid-body representation of the mechanism is used containing a hardening nonlinear spring and a viscous ... -
Nonlinear Analysis and Characteristic Variation of Self-Excited Vibration in the Vertical Rotor System Due to the Flexible Support of the Journal Bearing
(The American Society of Mechanical Engineers (ASME), 2018)Various vibration problems occur in rotating machinery. Specifically, the large amplitude vibration may occur in the vertical pump using a journal bearing. In an actual vertical pump, the stator's structure supporting the ... -
Identification of the Effective Control Parameter to Enhance the Progression Rate of Vibro-Impact Devices With Drift
(The American Society of Mechanical Engineers (ASME), 2018)This paper presents an experimental study to find out an effective parameter which is useful to enhance the progression rate of drifting vibro-impact systems excited by a harmonic force. It is assumed that the system ... -
Prediction of Rotordynamic Performance of Smooth Stator-Grooved Rotor Liquid Annular Seals Utilizing Computational Fluid Dynamics
(The American Society of Mechanical Engineers (ASME), 2018)Circumferentially grooved, annular liquid seals typically exhibit good whirl frequency ratios (WFRs) and leakage reduction, yet their low effective damping can lead to instability. The current study investigates the ... -
Rotordynamic Force Coefficients of Volutes and Diffusers for Prediction of Turbomachinery Vibration
(The American Society of Mechanical Engineers (ASME), 2018)The American Petroleum Institute (API) level II vibration stability analysis for impellers requires higher fidelity models to predict the dynamic forces of the whirling impeller. These forces are in turn required to predict ... -
Limitation on Increasing the Critical Speed of a Spinning Disk Using Transverse Rigid Constraints, An Application of Rayleigh's Interlacing Eigenvalues Theorem
(The American Society of Mechanical Engineers (ASME), 2018)It can be predicted by Rayleigh's interlacing eigenvalue theorem that structural modifications of a spinning disk can shift the first critical speed of the system up to a known limit. In order to corroborate this theorem, ... -
Orbit Response Recognition During Touchdowns by Instantaneous Frequency in Active Magnetic Bearings
(The American Society of Mechanical Engineers (ASME), 2018)During touchdowns of active magnetic bearings (AMB), the violent collision between rotors and touchdown bearings (TDB) can cause damages to both parts. Orbit response recognition provides a way for the AMB controller to ... -
Acoustic Analogy for Multiphase or Multicomponent Flow
(The American Society of Mechanical Engineers (ASME), 2018)The Ffowcs Williams and Hawkings (FW-H) equation is widely used to predict sound generated from flow and its interaction with impermeable or permeable surfaces. Owing to the Heaviside function used, this equation assumes ... -
A Wave-Based Analytical Solution to Free Vibrations in a Combined Euler–Bernoulli Beam/Frame and a Two-Degree-of-Freedom Spring–Mass System
(The American Society of Mechanical Engineers (ASME), 2018)In this paper, natural frequencies and modeshapes of a transversely vibrating Euler–Bernoulli beam carrying a discrete two-degree-of-freedom (2DOF) spring–mass system are obtained from a wave vibration point of view in ... -
Sound-Induced Motion of a Nanoscale Fiber
(The American Society of Mechanical Engineers (ASME), 2018)An analysis is presented of the motion of a thin fiber, supported on each end, due to a sound wave that propagates in the direction perpendicular to its long axis. Predicted and measured results indicate that when fibers ... -
Effective Placement of a Cantilever Resonator on Flexible Primary Structure for Vibration Control Applications—Part 1: Mathematical Modeling and Analysis
(The American Society of Mechanical Engineers (ASME), 2018)In this Part 1 of a two-part series, the theoretical modeling and optimization are presented. More specifically, the effect of attachment location on the dynamics of a flexible beam system is studied using a theoretical ... -
Effective Placement of a Cantilever Resonator on Flexible Primary Structure for Vibration Control Applications—Part 2: Model Updating and Experimental Validation
(The American Society of Mechanical Engineers (ASME), 2018) -
Optimal Locations of Piezoelectric Patch on Wideband Random Point-Driven Beam for Energy Harvesting
(The American Society of Mechanical Engineers (ASME), 2018)Inspired by the phenomenon of localized response intensification in wideband random vibration, a novel procedure is proposed to determine the optimal locations of piezoelectric patch attaching on wideband random point-driven ... -
Nonlinear Parametric Reduced-Order Model for the Structural Dynamics of Hybrid Electric Vehicle Batteries
(The American Society of Mechanical Engineers (ASME), 2018)Battery packs used in electrified vehicles exhibit high modal density due to their repeated cell substructures. If the excitation contains frequencies in the region of high modal density, small commonly occurring structural ... -
Vibration Reduction of Mistuned Bladed Disks Via Piezoelectric-Based Resonance Frequency Detuning
(The American Society of Mechanical Engineers (ASME), 2018)This paper extends the resonance frequency detuning (RFD) vibration reduction approach to cases of turbomachinery blade mistuning. Using a lumped parameter mistuned blade model with included piezoelectric elements, this ... -
Vibration Analysis in the Presence of Uncertainties Using Universal Grey System Theory
(The American Society of Mechanical Engineers (ASME), 2018)The uncertainty present in many vibrating systems has been modeled in the past using several approaches such as probabilistic, fuzzy, interval, evidence, and grey system-based approaches depending on the nature of uncertainty ... -
Modeling and Analysis of Nonlinear Wave Propagation in One-Dimensional Phononic Structures
(The American Society of Mechanical Engineers (ASME), 2018)Different from elastic waves in linear periodic structures, those in phononic crystals (PCs) with nonlinear properties can exhibit more interesting phenomena. Linear dispersion relations cannot accurately predict band-gap ... -
A Frequency Domain Method for Calculating the Failure Probability of Nonlinear Systems With Random Uncertainty
(The American Society of Mechanical Engineers (ASME), 2018)A hybrid approach is proposed to evaluate the probability of unacceptable performance with respect to uncertain parameters. The evaluation of structural reliability and the solution of maximum vibration response are performed ... -
Optimal Vibration Reduction of Flexible Rotor Systems by the Virtual Bearing Method
(The American Society of Mechanical Engineers (ASME), 2018)This paper presents a new approach to optimal bearing placement that minimizes the vibration amplitude of a flexible rotor system with a minimum number of bearings. The thrust of the effort is the introduction of a virtual ... -
New Analytic Free Vibration Solutions of Rectangular Thick Plates With a Free Corner by the Symplectic Superposition Method
(The American Society of Mechanical Engineers (ASME), 2018)Seeking analytic free vibration solutions of rectangular thick plates without two parallel simply supported edges is of significance for an insight into the performances of related engineering devices and structures as ...