Results 121 to 130 of about 113,834 (330)

Velocity dependence of joint friction in robotic manipulators with gear transmissions [PDF]

, 2005
This paper analyses the problem of modelling joint friction in robotic manipulators with gear transmissions at joint velocities varying from close to zero until their maximum appearing values.
Aarts, Ronald, Jonker, Ben, Waiboer, Rob
core   +2 more sources

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

Advanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia, Rogelio Ortigosa, Jesús Martínez‐Frutos, Daniel Garcia‐Gonzalez   +3 more
wiley   +1 more source

Influence of Lubrication Cycle Parameters on Hydrodynamic Linear Guides through Simultaneous Monitoring of Oil Film Pressure and Floating Heights

Lubricants
Hydrodynamic linear guides in machine tools offer a high load capacity and excellent damping characteristics, improving stability, precision, and vibration reduction.
Burhan Ibrar, Volker Wittstock, Joachim Regel, Martin Dix   +3 more
doaj   +1 more source

Supersonic transport lubrication system investigation, phase 2 Periodical report [PDF]

Evaluation tests of ball bearings, face seals, and lubricants for use on Mach 3 aircraft gas turbine engine ...
Rhoads, W. L.
core   +1 more source

Lubrication model of a knee prosthesis, with non newtonian fluid and porous rough material [PDF]

, 2009
Tibial component of knee prostheses, made of ultra high molecular weight polyethylene (UHMWPE), experiences a high degree of wear and may be expected to last twelve years on average.
Berli, Marcelo Eduardo, Campana, Diego Martin, Di Paolo, José, Ubal, Sebastian   +3 more
core  

Durable Electro‐Photothermal Superhydrophobic Coatings Based on Liquid‐Like Functionalization of Nanoparticles: Improved Water Repellency and Droplet Rebound

Advanced Materials Interfaces, EarlyView.
Multi‐walled carbon nanotubes (CNTs) are functionalized with liquid‐like linear polydimethylsiloxane (LPDMS) brushes and conventional solid‐like alkyl brushes, then incorporated into a resin and spray‐coated onto substrates. The resulting surfaces exhibit distinct water‐repellent behaviors.
Amirhossein Jalali Kandeloos, Tanja Eder, Youven Benseghir, Michael R. Reithofer, Manuel Luitz, Jia Min Chin   +5 more
wiley   +1 more source

A novel lubricating method of oil pump with self-adaptive adjustment function for transmission

Scientific Reports
At present, the lubrication of transmission in vehicles cannot be adjusted according to driving conditions, especially vehicles’ speed, resulting in low lubrication efficiency and high energy loss.
Yangfeng Cao, Dazhou Liu, Peng Zhang, Hao Zhou, Shengdun Zhao   +4 more
doaj   +1 more source

Multi‐Material Gradient Printing Using Meniscus‐enabled Projection Stereolithography (MAPS)

Advanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
MAPS is a new vat‐free printing technique that utilizes programmed delivery of resin droplets with custom formulations to enable multi‐material gradient printing of 3D structures with user‐defined variations in mechanical stiffness, opacity, surface energy, cell densities, and magnetic properties. Abstract Light‐based additive manufacturing methods are
Puskal Kunwar, Arun Poudel, Ujjwal Aryal, Rui Xie, Zachary J. Geffert, Haven Wittmann, Daniel Fougnier, Tsung Hsing Chiang, Mathew M. Maye, Zhen Li, Pranav Soman   +10 more
wiley   +1 more source

A Sleeve Alters the Pressure‐Stretch Curve of a Hyperelastic Balloon to Enable Pre‐Programmed Sequencing

Advanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
This article demonstrates that encasing a hyperelastic balloon in an inextensible sleeve greatly increases its burst pressure. This simple mechanical behavior can be used to produce an asymmetric inflation‐deflation sequence for coupled balloons with different thicknesses so they could serve as a soft robot's rear and front anchors when driven from a ...
Ifat Gertler, Katherine J. Kuchenbecker
wiley   +1 more source

Development of a Simulation System with Integrated In Situ Monitoring Capabilities for the Lubrication State of Rolling Elements in Space Control Moment Gyro Bearings

Lubricants
As a core actuator for attitude control in spacecraft, the lubrication state of the bearing rolling elements in the Control Moment Gyro (CMG) critically determines the operational lifetime and control accuracy of the overall assembly.
Zhaoliang Dou, Zhuangzhuang Du, Saihang Zhou, Gang Zhou, Shaohua Zhang, Lu Gao, Ye Yang, Fengbin Liu   +7 more
doaj   +1 more source