Results 111 to 120 of about 114,140 (286)

Influence of Rolling Friction Coefficient on Inter-Particle Percolation in a Packed Bed by Discrete Element Method

Archives of Metallurgy and Materials, 2016
Rolling friction representing the energy dissipation mechanism with the elastic deformation at the contact point could act directly on particle percolation.
Zhou Heng, Luo Zhiguo, Zhang Tao, You Yang, Li Haifeng, Zou Zongshu   +5 more
doaj   +1 more source

TreeSpider: In‐Canopy Exploration With Tether‐Based Aerial Modular Arms

Advanced Robotics Research, EarlyView.
A tethered drone with perching arms and a 360° ring enables unprecedented maneuverability within dense forest canopies. By dynamically adjusting tether length and decoupling pitch from the frame, it navigates between branches, senses multiple trees, and interacts physically with foliage.
Luca Romanello, Tian Lan, Salaheldin Hassan, Maximilian Leutschafft, Erdem Ekinci, Sophie F. Armanini, Mirko Kovac, Basaran Bahadir Kocer   +7 more
wiley   +1 more source

KINEMATICS FRICTION PAIR FOR EXAMPLE NEEDLE BEARINGS [PDF]

Scientific Journal of Silesian University of Technology. Series Transport, 2014
The present study concerns certain phenomena that take place in the needle roller bearing. The friction that generates the anti-torque of a friction pair is the major factor that influences the needle bearing’s wear. In the needle bearing there occur two
Jerzy NACHIMOWICZ, Robert KORBUT
doaj  

Role of friction in asymmetrical rolling [PDF]

, 2013
Розглянуті методи визначення коефіцієнта тертя при прокатуванні стосовно умов несиметричного прокатування на валках різного діаметру, що обертаються з однаковими кутовими швидкостями.
Gogaev, K., Radchenko, A., Гогаев, К. А., Радченко, А. К.   +3 more
core  

A State‐Adaptive Koopman Control Framework for Real‐Time Deformable Tool Manipulation in Robotic Environmental Swabbing

Advanced Robotics Research, EarlyView.
This work presents a state‐adaptive Koopman linear quadratic regulator framework for real‐time manipulation of a deformable swab tool in robotic environmental sampling. By combining Koopman linearization, tactile sensing, and centroid‐based force regulation, the system maintains stable contact forces and high coverage across flat and inclined surfaces.
Siavash Mahmoudi, Amirreza Davar, Dongyi Wang   +2 more
wiley   +1 more source

A Reasoned Attempt to Mitigate Vibrations in Nonlinear Flexible Systems Influenced by Tractive–Elastic Rolling Contact Friction Through Input Shaping: A Case Study on a Trolley–Pipe Benchmark Transport System

Actuators
The well-regarded feedforward control strategy known as Input Shaping is aimed at improving the dynamic response of flexible mechanical systems by reducing overshoot and residual vibration amplitude.
Gerardo Peláez, Pablo Izquierdo, Gustavo Peláez, Higinio Rubio   +3 more
doaj   +1 more source

Modelling friction in cold rolling

The cold rolling process is an essential step in the production chain of high quality steel strip that is used in applications such as automotive, packaging or construction. Cold rolling models are of crucial importance for setup of the cold rolling mill, defect analysis, development of new steel grades or for design of new rolling mills.
openaire   +2 more sources

History of ball bearings [PDF]

The familiar precision rolling-element bearings of the twentieth century are products of exacting technology and sophisticated science. Their very effectiveness and basic simplicity of form may discourage further interest in their history and development.
Dowson, D., Hamrock, B. J.
core   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Theoretical investigation and experimental validation of wear in conjugate rolling friction pairs of two-dimensional piston pumps

Advances in Mechanical Engineering
The two-dimensional piston pump stands as an optimal power component within pump-controlled hydraulic systems due to its utilization of a rolling friction pair.
Chao Lu, Hongxue Zhou, Zhen Wang, Dianrong Gao   +3 more
doaj   +1 more source