Results 31 to 40 of about 3,971 (260)
Actuators, 2022 Torsional vibrations play a critical role in the design and operation of a mechanical or mechatronic drivetrain due to their impact on lifetime, performance, and cost.
Thijs Van der Veken +5 more
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EnergiesThe torsional, lateral, and axial vibrations that occur during drilling operations have negative effects on the drilling equipment. These negative effects can cause huge economic impacts, as the failure of drilling tools results in wasted materials, non ...
Mohamed Zinelabidine Doghmane
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Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park +5 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
THE DIAGNOSTICS OF VISCOTIC DUMPERS OF TORSIONAL VIBRATIONS [PDF]
Scientific Journal of Silesian University of Technology. Series Transport, 2014 The general problems connected with the vibrations of crankshafts with a pay particular attention to the torsional vibrations are discussed in the paper.
Wojciech HOMIK
doaj
Vojnotehnički Glasnik, 2008 U radu je prikazan tradicionalan postupak proračuna torzionih oscilacija u sistemu brodske dizel motorne propulzije. Realan sistem zamenjen je ekvivalentnim sistemom sa 19 stepeni slobode kretanja, za koji su analizirane slobodne i prinudne torzione ...
Dragan R. Trifković +2 more
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Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading
Advanced Engineering Materials, EarlyView.This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev +2 more
wiley +1 more source
Torsions, low-frequency vibrations, and vibration–torsion (“vibtor”) levels in the m-chlorotoluene cation [PDF]
The Journal of Chemical Physics, 2020 Zero-electron-kinetic-energy (ZEKE) spectra are presented for m-chlorotoluene (mClT), employing different low-lying torsional and vibration–torsional (“vibtor”) levels of the S1 state as intermediates. The adiabatic ionization energy is determined to be 71 319 cm−1 ± 5 cm−1 (8.8424 ± 0.0006 eV).
David J. Kemp +2 more
openaire +2 more sources
Vibration analysis of simultaneous drilling and reaming BHA
Journal of Petroleum Exploration and Production Technology, 2020 The drillstring used in the oil and gas exploration is a complex structure due to the different forces acting on it. One of the primary sources of drillstring vibrations is the cutting forces caused by the drill bit contact with the rock formation.
Mohammed F. Al Dushaishi +1 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A polymerizable deep eutectic solvent is reinforced with tannic acid‐modified cellulose nanofibers to construct a hierarchical dynamic eutectogel network. Synergistic covalent and reversible interactions impart ultrahigh stretchability, high ionic conductivity, broad temperature tolerance, self‐healing, and strong adhesion, enabling robust wearable ...
Huang Wu +11 more
wiley +1 more source