Results 11 to 20 of about 241,502 (294)
Stick-slip suppression and speed tuning for a drill-string system via proportional-derivative control [PDF]
, 2020 This paper studies the problems of stick-slip mitigation and speed tuning for a lumped-parameter drill-string system by using a proportional-derivative feedback controller via path-following analysis.
Y Liu (4702669) +4 more
core +6 more sources
Surface roughness and effective stick-slip motion [PDF]
Physical Review E, 2003 The effect of random surface roughness on hydrodynamics of viscous incompressible liquid is discussed. Roughness-driven contributions to hydrodynamic flows, energy dissipation, and friction force are calculated in a wide range of parameters. When the hydrodynamic decay length (the viscous wave penetration depth) is larger than the size of random ...
Ponomarev, I. V., Meyerovich, A. E.
openaire +6 more sources
Stick–Slip Vibration Characteristics Study of the Drill String Based on PID Controller
Energies, 2023 In order to address the issue of drill string stick–slip vibration, which leads to drill bit wear and reduces the drilling velocity, we conducted a study on the characteristics of stick–slip vibration using a proportional-integral-derivative (PID ...
Baoyong Yan +3 more
doaj +1 more source
Hydraulic Conditions for Stick‐Slip Tremor Beneath an Alpine Glacier
Geophysical Research Letters, 2022 Accumulating evidence suggests that glacier basal motion can produce seismogenic stick‐slip events caused by frictional resistance at the ice‐bed interface.
Manuela Köpfli +5 more
doaj +1 more source
Test on Stick-Slip Vibration of PDC Bit in Horizontal Wells
Shiyou jixie, 2023 Stick-slip vibration can lead to PDC bit damage and downhole instrument failure,while testing is a method commonly used to study the stick-slip vibration of drill string system in horizontal wells.In the paper,a micro PDC bit was designed to conduct rock
Long Wei +6 more
doaj
Lubricants, 2022 In this study, we discussed the occurrence condition stick-slip model based on a 2DOF system, in which a 1DOF system model commonly used in stick-slip analysis was attached on an elastic foundation.
Satoru Maegawa +2 more
doaj +1 more source
Stick-slip vibration behaviors of BHA and its control method in highly-deviated wells
Alexandria Engineering Journal, 2022 Stick-slip vibration is a common phenomenon met in oil gas drilling, especially in the complex trajectory wells such as highly-deviated wells, it will cause the earlier failure of BHA (bottom hole assembly) and lower drilling efficiency.
Weiji Liu +3 more
doaj +1 more source
Stick–slip in hand guidance of palletizing robot as collaborative robot
International Journal of Advanced Robotic Systems, 2022 Stick–slip is a challenging problem in palletizing robots and constitutes one of the main problems in precision positioning control. This study analyzed the stick–slip of a four-degree-of-freedom ceiling-mounted hand-guiding collaborative robot in a ...
Yun-Ju Chuang +3 more
doaj +1 more source
Stick-slip behaviour in sliding rubber contacs [PDF]
, 2023 The stick-slip phenomena play an important role in sliding contacts. The presence of that dynamic phenomena indicates that a sliding system can be regarded as a dynamic system consisting of masses, dampers and springs.
Budi Setiyana, Budi
core +1 more source
From transmission error measurement to Pulley-Belt slip determination in serpentine belt drives : influence of tensioner and belt characteristics [PDF]
, 2009 Serpentine belt drives are often used in front end accessory drive of automotive engine. The accessories resistant torques are getting higher within new technological innovations as stater-alternator, and belt transmissions are always asked for higher ...
Dufour, Regis +3 more
core +1 more source