Results 21 to 30 of about 16,165 (285)

THE DIAGNOSTICS OF VISCOTIC DUMPERS OF TORSIONAL VIBRATIONS [PDF]

open access: yesScientific 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   +1 more source

On the scattering of torsional elastic waves from axisymmetric defects in coated pipes [PDF]

open access: yes, 2012
This is the post-print version of the Article - Copyright @ 2012 ElsevierLong range ultrasonic testing is now a well established method for examining in-service degradation in pipelines.
Mudge, P, Zlatev, Z, Kirby, R
core   +1 more source

Homologous basic helix–loop–helix transcription factors induce distinct deformations of torsionally-stressed DNA: a potential transcription regulation mechanism

open access: yesQRB Discovery, 2022
Changing torsional restraints on DNA is essential for the regulation of transcription. Torsional stress, introduced by RNA polymerase, can propagate along chromatin facilitating topological transitions and modulating the specific binding of transcription
Johanna Hörberg   +2 more
doaj   +1 more source

Study on Rock-Breaking Mechanisms of Multi-Dimensional Impact Cutting Based on PDC Cutter Numerical Simulation

open access: yesShiyou jixie, 2023
The development and application of the torsional impact drilling model improve the efficiency of breaking rocks along the wellbore circumference.To enhance the rock-breaking efficiency of the compound impact drilling and the optimal torsional-axial ...
Qi Yue   +5 more
doaj  

Mitigation of Torsional Vibrations in a Modular Drivetrain with Interleaving Control

open access: yesMachines, 2022
In order to meet requirements in machine design, modularity is often brought forward as a way to cope with load variations and adaptability of the architecture.
David van Os   +4 more
doaj   +1 more source

Effectiveness of flange plates on torsional behaviors of ultra-high-performance fiber-reinforced concrete hollow beams

open access: yesDevelopments in the Built Environment, 2023
This study investigates the effectiveness of flanges with various types of stirrup and cross-sectional dimensions on the torsional behaviors of ultra-high-performance fiber-reinforced concrete (UHPFRC) hollow beams.
Jiale Zhou   +4 more
doaj   +1 more source

Simulation on compound percussive drilling: Estimation based on multidimensional impact cutting with a single cutter

open access: yesEnergy Reports, 2021
In the present study, a 3D FEM of compound percussive system considering a loading–unloading cycle was employed to simulate the dynamic single-cutter-rock interaction.
Yumei Li   +4 more
doaj   +1 more source

Impact of Aggregated PV on Subsynchronous Torsional Interaction [PDF]

open access: yes2020 47th IEEE Photovoltaic Specialists Conference (PVSC), 2020
This paper investigates induced oscillation (specifically subsynchronous torsional interactions) in power systems arising from photovoltaic (PV) power modulation. Time domain simulations of a modified IEEE first-benchmark system are presented and analyzed.
Rasel Mahmud, Andy Hoke, Jonathan White
openaire   +1 more source

Development and Field Test of the Same-Frequency Different-Phase Compound Impact Tool

open access: yesShiyou jixie, 2023
A same-frequency different-phase compound impact tool was developed to improve the rock-breaking efficiency of PDC bits in hard formations, increase the penetration depth of cutters, and eliminate the “stick-slip” phenomenon of the downhole bit.The ...
Ye Daohui   +5 more
doaj  

Calibration of the torsional and lateral spring constants of cantilever sensors

open access: yes, 2014
Financial support from the EPSRC (EP/K000411/1) and the University of St. Andrews under an Impact Acceleration Account (EP/K503940/1) are gratefully acknowledged.A method suitable for the calibration of the spring constants of all torsional and lateral ...
Hähner, Georg, Parkin, John David
core   +1 more source

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