Journal of Vibration and Acoustics: Recent submissions
Now showing items 841-860 of 3913
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Analytical Acoustic Power Spectrum Formulations for Rotating Monopole and Dipole Point Sources
(The American Society of Mechanical Engineers (ASME), 2016)Analytical acoustic power spectrum formulations for the rotating monopole and dipole point sources are proposed by employing the spherical harmonic series expansion method. Both the analytical acoustic power spectra and ... -
Efficient and Accurate Calculation of Discrete Frequency Response Functions and Impulse Response Functions
(The American Society of Mechanical Engineers (ASME), 2016)Modal properties of a structure can be identified by experimental modal analysis (EMA). Discrete frequency response functions (FRFs) and impulse response functions (IRFs) between response and excitation series are bases ... -
Absorption of Resonant Vibrations in Tuned Nonlinear Jointed Structures
(The American Society of Mechanical Engineers (ASME), 2016)A novel concept for the passive mitigation of forced, resonant vibrations is presented. The key to this concept is an absorption phenomenon which relies on the energy conversion from low to high frequencies by means of ... -
Sources and Propagation of Nonlinearity in a Vibration Isolator With Geometrically Nonlinear Damping
(The American Society of Mechanical Engineers (ASME), 2016)In this paper, the behavior of a single degreeoffreedom (SDOF) passive vibration isolation system with geometrically nonlinear damping is investigated, and its displacement and force transmissibilities are compared with ... -
Experimental Validation of Wave Vibration Analysis of Complex Vibrations in a Two Story Metallic Space Frame Based on the Timoshenko Bending Theory
(The American Society of Mechanical Engineers (ASME), 2016)In a space frame, there exist inand outofplane bending, axial, and torsional vibrations. The analysis of complex vibrations in such structures has relied mostly on numerical approaches. In this study, a wavebased analytical ... -
Limits of the Kelvin Voigt Model for the Analysis of Wave Propagation in Monoatomic Mass Spring Chains
(The American Society of Mechanical Engineers (ASME), 2016)In this study, the effect of energy dissipation on harmonic waves propagating in onedimensional monoatomic linear viscoelastic massspring chains is investigated. In particular, first dispersion laws in terms of wavenumber, ... -
Structural Damage Detection Using Slopes of Longitudinal Vibration Shapes
(The American Society of Mechanical Engineers (ASME), 2016)While structural damage detection based on flexural vibration shapes, such as mode shapes and steadystate response shapes under harmonic excitation, has been well developed, little attention is paid to that based on ... -
P Spice Modeling Three Dimensional Propagation of Ultrasound Diffraction Considering a Gaussian Beam Approach
(The American Society of Mechanical Engineers (ASME), 2016)In this paper, we propose a new method for simulating threedimensional (3D) ultrasonic wave propagation using PSpice like simulator. We use a onedimensional transmission line model to implement the diffraction losses. In ... -
Transverse Vibrations of Mixed Mode Cracked Nanobeams With Surface Effect
(The American Society of Mechanical Engineers (ASME), 2016)Slant edge cracked effect considering the inherent relation between surface energy and mixedmode crack propagations on the free transverse vibrations of nanobeams with surface effect is investigated. First, the slant edge ... -
Drill String Bit Whirl Simulation With the Use of Frictional and Nonholonomic Models
(The American Society of Mechanical Engineers (ASME), 2016)The problem about computer simulation of whirl vibrations of a drill bit is considered. The dynamic process is assumed to be in an incipient stage when the bit rolls on the borehole bottom without reaching the well wall. ... -
Fiber Reinforced Elastomeric Bearings for Vibration Isolation
(The American Society of Mechanical Engineers (ASME), 2016)Fiberreinforced elastomeric bearings were originally proposed as an alternative to conventional steelreinforced elastomeric bearings for seismic isolation applications. The flexible fiber reinforcement is a lightweight and ... -
A Compact Experimentally Validated Model of Magnetorheological Fluids
(The American Society of Mechanical Engineers (ASME), 2016)Magnetorheological (MR) dampers are one of the most promising devices for mitigation of vibration of engineering structures due to earthquakes and wind excitation. In this paper, a compact twocolumn model of an MR fluid ... -
Analytical Solutions to H2 and H∠Optimizations of Resonant Shunted Electromagnetic Tuned Mass Damper and Vibration Energy Harvester
(The American Society of Mechanical Engineers (ASME), 2016)When optimized, tuned mass dampers (TMDs) can effectively mitigate the vibration of the primary structure, because additional resonance and damping are introduced by the auxiliary massspringdamper system. Similar effect ... -
Preshaping Command Functions to Control the Dynamic Impacts in MEMS
(The American Society of Mechanical Engineers (ASME), 2016)The control of electrostatically actuated microsystems with openloop strategies has the potential to reduce the switching time with immediate benefits on device performances and, on the other hand, to reduce the impact ... -
Modeling and Characterization of Rotary Electrohydrostatic Actuators
(The American Society of Mechanical Engineers (ASME), 2016)Electrohydrostatic actuators are increasingly finding applications in different fields due to their numerous advantages with respect to electromechanical and conventional hydraulic systems. To understand their behavior, ... -
Effect of Placing a Probe in an Acoustic Drop Levitator
(The American Society of Mechanical Engineers (ASME), 2016)In this paper, we use computational modeling to explore the effects of placing a probe within the active volume of an acoustic levitator. A twostep computational approach is used to visualize the levitation nodes using ... -
Shock Isolation in Finite Length Dimer Chains With Linear, Cubic, and Hertzian Spring Interactions
(The American Society of Mechanical Engineers (ASME), 2016)This paper investigates the use of finite 1:1 dimer chains to mitigate the transmission of shock disturbances. Dimer chains consist of alternating light and heavy masses with interconnecting compliance. Changing the mass ... -
Numerical Integration Method for Stability Analysis of Milling With Variable Spindle Speeds
(The American Society of Mechanical Engineers (ASME), 2016)A semianalytical method is presented in this paper for stability analysis of milling with a variable spindle speed (VSS), periodically modulated around a nominal spindle speed. Taking the regenerative effect into account, ... -
Damping of Torsional Beam Vibrations by Control of Warping Displacement
(The American Society of Mechanical Engineers (ASME), 2016)Supplemental damping of torsional beam vibrations is considered by viscous bimoments acting on the axial warping displacement at the beam supports. The concept is illustrated by solving the governing eigenvalue problem for ... -
Determination of System Damping From the Response Amplitude at Resonance
(The American Society of Mechanical Engineers (ASME), 2016)A method for estimating the damping of a vibratory system from the frequency of resonance and the response amplitude at that resonant peak alone is reviewed and applied to the determination of the system loss or quality ...