Results 61 to 70 of about 4,537 (232)

Drag Reduction Control for Torsion and Oscillation in Top Drive System Slide Drilling

Shiyou jixie, 2018
The domestic technology of drag reduction control for torsion and oscillation in top drive system (TDS) slide drilling is not yet mature. The torque limit and torsion angle during drilling are still set by experience, which is inconsistent with the ...
Li Qian, Ji Guodong, Zhang Hui, Ge Yunhua, Wang Bo, Cui Meng   +5 more
doaj  

Development of Thrust, Torque, and Power Estimation Model, and Prediction Performance of Earth Pressure Balance Tunnel Boring Machine in Mixed-Face Strata

Applied Sciences
In this paper, a theoretical estimation model of TBM thrust, torque, and power in the rock–soil interface (RSI) of mixed ground is developed, including a new force model for the drag cutter that accounts for chamber pressure and soil friction.
Shufang Zhai, Yingjie Song, Hao Tian
doaj   +1 more source

A new drag and lift correlation for spherocylinders from fully resolved Immersed Boundary Method

AIChE Journal, EarlyView.
Abstract Many industrial processes deal with non‐spherical particles, e.g., mineral mining and biomass conversion. It is crucial to understand the particles' hydrodynamics to control and optimize these processes. To extend the current state‐of‐the‐art from arrays of spherical particles to spherocylindrical particles, we performed extensive particle ...
A. H. Huijgen, Y. Sterkenburgh, Y. Tang, N. G. Deen, M. W. Baltussen   +4 more
wiley   +1 more source

Experimental investigation of drag loss and plate separation behavior of wet clutches under external forces

Results in Engineering
Understanding the drag loss behavior of wet clutches is crucial for the development of low-loss clutch systems. For non-horizontal installation positions and non-stationary applications, external forces caused by the inclination or vehicle dynamics act ...
Lukas Pointner-Gabriel, Simon Flamm, Max Menzel, Katharina Voelkel, Karsten Stahl   +4 more
doaj   +1 more source

Design, Control, and Clinical Applications of Magnetic Actuation Systems: Challenges and Opportunities

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This review aims to provide a broad understanding for interdisciplinary researchers in engineering and clinical applications. It addresses the development and control of magnetic actuation systems (MASs) in clinical surgeries and their revolutionary effects in multiple clinical applications.
Yingxin Huo, Lidong Yang, Tiantian Xu, Dong Sun   +3 more
wiley   +1 more source

Towards Advanced Intelligent and Perceptive Soft Grippers

Advanced Intelligent Systems, EarlyView.
Implementing soft yet strong and intelligent soft grippers request innovative and creative solutions in designing soft bodies and seamlessly integrating actuated systems with hierarchical sensing. This review systematically analyses soft grippers with a deep understanding of core components, from fundamental design principles to actuation and sensing ...
Haneul Kim, Hayeon Shin, Seik Park, Changbeom Shim, Seonggun Joe   +4 more
wiley   +1 more source

Optimization Design of Low Drag Torque Parameters of High-speed Wet Clutches

Jixie chuandong
In order to reduce the drag torque under high speed conditions, the equivalent radius is introduced into the traditional low speed torque model of a wet clutch with track vehicle, and the calculation model of the drag torque with radial groove is derived.
Wang Yuxi, Zhao Junsheng, Li Xueming, Gao Weidong, Gong Ke   +4 more
doaj  

Development of High Efficiency Dog Clutch with One-Way Mechanism for Stepped Automatic Transmissions

International Journal of Automotive Engineering, 2019
In order to reduce drag losses and a clutch actuator load, the new dog clutch system for stepped automatic transmission is developed. Transmitting torque is converted to the engaging force because rotating shaft and dog clutch are connected with the ...
Isamu Shiotsu, Hirofumi Tani, Masanobu Kimura, Yu Nozawa, Atsushi Honda, Motoki Tabuchi, Hirotsugu Yoshino, Kentaroh Kanzaki   +7 more
doaj   +1 more source

Cteno‐Bot: An Untethered Metachronally Swimming Robot With Magnetoactive Propulsors

Advanced Intelligent Systems, EarlyView.
We present Cteno‐bot, an untethered ctenophore‐inspired robot which swims using metachronally coordinated appendages. A single mechanism controls up to 216 magnetoactive propulsors via a dynamically varying magnetic field. We show that the swimming speed of the robot can be increased without a corresponding increase in power requirement, simply by ...
David J. Peterman, Margaret L. Byron
wiley   +1 more source

Key Technology for Drilling Speed and Efficiency Improvement on Chenghai 2-2 Artificial Island of Dagang Oilfield

Shiyou jixie, 2019
To address the problems of difficult trajectory control, high torque and drag and serious regional lost circulation on Bohai 2-2 artificial island of Dagang Oilfield, based on the analysis of drilling difficulties, targeting the well trajectory control ...
Wang Jianlong, Xu Jingguo, Du Qiang, Jin Haifeng, Cheng Dong, Zheng Feng, Li Ruiming   +6 more
doaj