Results 11 to 20 of about 1,070,708 (345)

Parameter Selection of Four-Cylinder Diesel Torsional Vibration Dampers

Механика машин, механизмов и материалов, 2021
Torsional vibration dampers in modern internal combustion engines are used to reduce alternating shear stresses leading to fatigue failure of the crankshaft, as well as to diagnose the crankshaft, reduce oil consumption, increase the mechanical ...
Mikhail A. Klesso, Alexander A. Nikishev, Andrey V. Predko, Alexander N. Petruchenko   +3 more
doaj   +1 more source

Reducing critical effects of torsional vibrations induced by PDC bits during rock destruction

Известия высших учебных заведений: Геология и разведка, 2022
Introduction. Torsional vibrations caused by drilling using a polycrystalline diamond compact (PDC) bit are analysed using wellbore data obtained under various drilling modes. The drilling caused by torsional vibrations are analysed.
B. A. Ovezov, K. O. Shcherbakova, L. R. Kalendarova, P. A. Romanov, D. A. Kuznetsova   +4 more
doaj   +1 more source

Hybrid sliding PID controller for torsional vibrations mitigation in rotary drilling systems

, 2021
During the drilling process, the drilling system devices can be exposed to several types of phenomena incited by lateral, axial, and torsional vibrations. The latter can lead to severe damages if they are not efficiently controlled and quickly mitigated.
C. Mendil, M. Kidouche, M. Z. Doghmane
semanticscholar   +1 more source

Phase-Controlled Thyristor Sub-Synchronous Damper Converter for a Liquefied Natural Gas Plant

Energies, 2021
In electrified liquefied natural gas (LNG) plants variable frequency drives (VFDs) interact with turbine-generator (TG) units creating torsional vibrations known as sub-synchronous torsional interactions (SSTIs). Torsional vibrations can be dangerous for
Lorenzo Bongini, Rosa Anna Mastromauro, Daniele Sgrò, Fabrizio Malvaldi   +3 more
doaj   +1 more source

Mechanism Analysis and Suppression Strategy of Torsional Vibrations of DFIG Shaft System Considering Torque Control of Wind Turbine

Zhongguo dianli, 2022
The shafting model of the doubly-fed induction generator (DFIG) can be equivalent to the wind turbine mass connected to the generator mass via the flexible shaft, and the shaft system has great flexibility and low damping and encounters torsional ...
Sujuan SUN, Qiantao HUO, Lixin SUN, Liang GUO, Rui WANG, Xiangmei KONG   +5 more
doaj   +1 more source

Mathematical modeling of torsional vibrations of the wheel-motor unit of mains diesel locomotive UZTE16M [PDF]

E3S Web of Conferences, 2023
The article considers methods for studying torsional vibrations of the wheel-motor block of a diesel locomotive UZTE16M. The diesel locomotives in question were modernized at the structural enterprise “O’ztemiryo’lmashta’mir” (Machine building and repair
Mamaev Sherali, Anna Anna, Tursunov Shukurali, Nigmatova Dilnoza, Tursunov Tokhir   +4 more
doaj   +1 more source

Optimization of torsional vibration damper of cranktrain system using a hybrid damping approach

Engineering Science and Technology, an International Journal, 2021
The focus of this research is to develop the optimum design of torsional vibration damper using hybrid damping approach to decrease the torsional vibrations in the cranktrain system of internal combustion engines (ICE).
Haşmet Çağrı SEZGEN, Mustafa TINKIR
doaj   +1 more source

Alfven seismic vibrations of crustal solid-state plasma in quaking paramagnetic neutron star [PDF]

, 2010
Magneto-solid-mechanical model of two-component, core-crust, paramagnetic neutron star responding to quake-induced perturbation by differentially rotational, torsional, oscillations of crustal electron-nuclear solid-state plasma about axis of magnetic ...
Bastrukov, S., Chang, H. -K., Molodtsova, I., Takata, J., Xu, R. X.   +4 more
core   +2 more sources

Asymptotic analysis of geometrically nonlinear vibrations of long plates

Учёные записки Казанского университета: Серия Физико-математические науки, 2020
In this paper, we performed an asymptotic analysis for equations of the classical plate theory with the von K´arma´n strains under the assumption that the width of the plate is small compared with its length.
B. Affane, A.G. Egorov
doaj   +1 more source

Investigation of the dynamic stability of bending-torsional deformations of the pipeline

Журнал Средневолжского математического общества, 2021
Nonlinear mathematical models are proposed that describe the dynamics of a pipeline with a fluid flowing in it: a) the model of bending-torsional vibrations with two degrees of freedom; b) the model describing flexural-torsional vibrations taking into ...
Velmisov Petr A., Tamarova Yuliya A., Pokladova Yuliya V.   +2 more
doaj   +1 more source