Results 11 to 20 of about 242,267 (234)
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
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
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
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
Study on Drill String Stick-slip Vibration Pattern Under Bit-Rock Interaction
Shiyou jixie, 2023 Stick-slip vibration leads to high-frequency shear stress on drill string and premature fatigue of drill string.Therefor,the torsional vibration model of drill string system considering bit-rock interaction was built by coupling the bit-rock interaction ...
Xing Xuesong +4 more
doaj
Contact dynamics from the atomic scale to nanostructured surfaces [PDF]
, 2007 The collective mechanical behavior of a multitude of small contacts affects the friction between sliding bodies on the macroscopic scale. The contacts are complicated systems involving many atoms, which are constantly deformed, ruptured and reformed.
Maier, Sabine
core +1 more source
Meikuang Anquan, 2023 For the problem of stick-slip vibration caused by hard rock formation in the process of drill bit penetrating in coal mine, and the discrete element method (DEM) was employed to study the rock cutting performance and stick-slip vibration behavior of PDC ...
Jian CHEN +6 more
doaj +1 more source
Sensing and Quantifying a New Mechanism for Vehicle Brake Creep Groan
Shock and Vibration, 2019 This paper investigates the creep groan of a vehicle’s brake experimentally, analytically, and numerically. Experimentally, the effects of acceleration on caliper and strut, noise, brake pressure, and tension are measured.
Dejian Meng +4 more
doaj +1 more source