Results 51 to 60 of about 1,882,013 (251)

Modelling lubricated revolute joints in multibody mechanical systems [PDF]

open access: yesProceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, 2004
This work deals with the modelling of lubricated revolute joints in multibody mechanical systems. In most machines and mechanisms, the joints are designed to operate with some lubricant fluid. The high pressures generated in the lubricant fluid act to keep the journal and the bearing apart.
Flores, Paulo   +3 more
openaire   +2 more sources

Origami‐Inspired Structural Design for Aquatic‐Terrestrial Amphibious Robots

open access: yesAdvanced Robotics Research, EarlyView.
This work presents a lightweight amphibious origami robot actuated by a single shape memory alloy wire. A rigid foldable origami structure with displacement amplification enables efficient terrestrial crawling and aquatic swimming. The addition of fan‐shaped units allows controllable turning in both environments.
Weiqi Liu   +5 more
wiley   +1 more source

Finite Element Modelling Method and Dynamic Characteristics of the Revolute Joints of a Simply Supported Bar During Dynamic Buckling

open access: yesShock and Vibration
The explicit dynamic finite element method (FEM) has been successfully employed for simulating the buckling response of beam or bar structures under axial impact.
Sai Liu, Weigui Zhang
doaj   +1 more source

Dead Matter, Living Machines: Repurposing Crustaceans' Abdomen Exoskeleton for Bio‐Hybrid Robots

open access: yesAdvanced Science, EarlyView.
Crustacean exoskeletons, repurposed from food waste, are engineered into sustainable bending actuators combining biotic structure with synthetic control. The augmented exoskeletons achieve rapid and robust motion with lightweight body and can be used as part of robotic manipulators, grippers and swimmers.
Sareum Kim, Kieran Gilday, Josie Hughes
wiley   +1 more source

Fuzzy adaptive state-feedback control for a revolute-prismatic-revolute robot manipulator

open access: yesCogent Engineering, 2019
In this work, a fuzzy adaptive state-feedback control is designed for the stabilization of a three-degree of freedom revolute-prismatic-revolute (RPR) robot manipulator.
N. Nejadkourki, M. J. Mahmoodabadi
doaj   +1 more source

Optimal dimensional synthesis of force feedback lower arm exoskeletons [PDF]

open access: yes, 2008
This paper presents multi-criteria design optimization of parallel mechanism based force feedback exoskeletons for human forearm and wrist. The optimized devices are aimed to be employed as a high fidelity haptic interfaces.
Patoglu, Volkan   +3 more
core   +1 more source

Torque‐Transmitting Architected Metamaterials for Flexible and Extendable Tubular Robotics

open access: yesAdvanced Intelligent Systems, EarlyView.
Soft and continuum robots commonly rely on fluid, tendon, or rod‐based power transmissions, to control robotic form and actuation. This study presents an architected structure, based on patterned straight‐line mechanisms, that enables simultaneous bending, extending, and torsionally rigid (BETR) transmission.
Sawyer Thomas, Aman Garg, Jeffery Lipton
wiley   +1 more source

Modeling and Control of the Automated Radiator Inspection Device [PDF]

open access: yes, 1991
Many of the operations performed at the Kennedy Space Center (KSC) are dangerous and repetitive tasks which make them ideal candidates for robotic applications. For one specific application, KSC is currently in the process of designing and constructing a
Dawson, Darren
core   +1 more source

Folding Assembly by Means of Dual-Arm Robotic Manipulation

open access: yes, 2016
In this paper, we consider folding assembly as an assembly primitive suitable for dual-arm robotic assembly, that can be integrated in a higher level assembly strategy.
Almeida, Diogo, Karayiannidis, Yiannis
core   +1 more source

Crater Observing Bioinspired Rolling Articulator (COBRA)

open access: yesAdvanced Intelligent Systems, EarlyView.
Crater Observing Bio‐inspired Rolling Articulator (COBRA) is a modular, snake‐inspired robot that addresses the mobility challenges of extraterrestrial exploration sites such as Shackleton Crater. Incorporating snake‐like gaits and tumbling locomotion, COBRA navigates both uneven surfaces and steep crater walls.
Adarsh Salagame   +4 more
wiley   +1 more source

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