Results 21 to 30 of about 241,502 (294)
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
Study on suppressing of stick-slip using dynamic vibration absorber
Nihon Kikai Gakkai ronbunshu, 2019 This study discussed design criteria for suppressing stick-slip using dynamic vibration absorber. First, a simplified analytical model that can quantify the effect of the dynamic vibration absorber on the occurrence and nonoccurrence conditions of stick ...
Satoru MAEGAWA, Fumihiro ITOIGAWA
doaj +1 more source
EnergiesThe critical factors that affect bottomhole stick–slip vibrations during vertical drilling operations are thoroughly investigated and analyzed in this research.
Chinedu Ejike +4 more
doaj +1 more source
Study of the influences of rotary table speed on stick-slip vibration of the drilling system
Petroleum, 2015 Stick-slip vibration presents one of the major causes of drilling problems, such as premature tool failures, low drilling efficiency and poor wellbore quality.
Liping Tang +4 more
doaj +1 more source
Modelling the tuned criticality in stick-slip friction during metal cutting [PDF]
, 2015 Cutting is a ubiquitous process in nature and man-made systems. Here we demonstrate that, based on morphological patterns observed in experiments, the friction behaviour of metal cutting exhibits a criticality with cutting speed as a tuned parameter. The
Wang, Q (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. +4 more
core +1 more source
Entrainment and Synchronization of Stick – Slip Oscillators [PDF]
, 2016 This work investigates the entrainment and synchronisation in stick – slip oscillators. A spring – mass placed on a uniformly moving belt in the presence of friction is taken as the model and a cubic Stirbeck friction curve is considered. The entrainment
Eldhose, P.B. +2 more
core +1 more source
The effect of laser surface texturing to inhibit stick-slip phenomenon in sliding contact
Advances in Mechanical Engineering, 2019 Stick-slip phenomenon in some mechanical structures, especially in machine tools, should be eliminated or inhibited, otherwise the vibration will occur and the position error will inevitably be obtained. In this study, different kinds of surface textures
Hao Wang +6 more
doaj +1 more source