Results 41 to 50 of about 4,441 (262)

Soft Robotic Snake with Variable Stiffness Actuation [PDF]

, 2017
In this paper, we present a prototype of a 3D printed snake-like robot for search and rescue applications, inspired by biological snake anatomy and locomotion. Unlike traditional robotics, this design takes advantage of soft materials to create a robot that is resilient to shock impacts, such as from falling debris or unsound flooring, and that can ...
Ryan Draper, Jane Sheard, Matt Troughton, Martin F. Stoelen   +3 more
openaire   +1 more source

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

Advanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

Improving the stiffness of mechanical layer jamming cable-driven soft actuators through design optimization and frame reinforcement

Mechanical Engineering Journal
Soft cable-driven actuators offer flexibility and adaptability but often lack stiffness, limiting their application in tasks requiring high load capacity. A variable stiffness mechanism has been developed to change the stiffness as needed to increase the
Chinvudh UAHCHINKUL, Satoshi MURAMATSU, Katsuhiko INAGAKI   +2 more
doaj   +1 more source

Unidirectional variable stiffness hydraulic actuator for load-carrying knee exoskeleton

International Journal of Advanced Robotic Systems, 2017
This article presents the design and experimental testing of a unidirectional variable stiffness hydraulic actuator for load-carrying knee exoskeleton.
Jun Zhu, Yu Wang, Jinlin Jiang, Bo Sun, Heng Cao   +4 more
doaj   +1 more source

A Magnetically-Actuated Coiling Soft Robot With Variable Stiffness

IEEE Robotics and Automation Letters, 2023
Soft and flexible magnetic robots have gained significant attention in the past decade. These robots are fabricated using magnetically-active elastomers, are capable of large deformations, and are actuated remotely thus allowing for small robot size. This combination of properties is appealing to the minimally invasive surgical community, potentially ...
Lloyd, Peter, Thomas, Theodosia Lourdes, Venkiteswaran, Venkatasubramanian Kalpathy, Pittiglio, Giovanni, Chandler, James H., Valdastri, Pietro, Misra, Sarthak, Lloyd, Peter Robert   +7 more
openaire   +4 more sources

Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method

Advanced Engineering Materials, EarlyView.
A novel compression–torsion metamaterial is engineered using inclined rods and symmetry breaking. To optimize its torsional performance, the golden section method is employed. The mechanical response of the metamaterial is validated through both numerical analysis and experimental validation.
Amirhossein Hassani, Sara Bagherifard
wiley   +1 more source

Additive Manufacturing of Alumina‐Reinforced Elastomers

Advanced Engineering Materials, EarlyView.
Vat‐photopolymerized elastomers reinforced with platelet‐shaped alumina exhibited preferential orientation, reduced porosity, and significantly enhanced mechanical performance. A 3 wt% platelet loading increased tensile strength from 12.4 to 45.7 MPa, highlighting the critical role of filler morphology in elastomeric VPP composites.
Majid Barzegar Keyvani, Zongwen Fu, Robert Göstl, Hamed Shokri, Carmine Putignano, Gianluca Percoco, Bilal Gökce   +6 more
wiley   +1 more source

Preliminary Design and Control of an Ankle Rehabilitation Robot With Variable Stiffness Actuator

IEEE Access
Intrinsic robotic compliance is crucial for enhancing the safety of physical human-robot interaction. This study proposes a variable stiffness ankle rehabilitation robot for rehabilitation training.
Laibin Luo, Zhe Wei, Yao Sun, Wenxin Zhang, Jie Zhou   +4 more
doaj   +1 more source

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

Advanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees, Timothy Harte, Bhagya Dharmasiri, Y. Athulya Wickramasingha, David J. Hayne, Daniel J. Eyckens, Luke C. Henderson   +6 more
wiley   +1 more source

Design and Dynamic Modeling of Variable Stiffness Joint Actuator Based on Archimedes Spiral

IEEE Access, 2018
Traditional rigid actuators are not applicable to robot applications involving explosive actions. Solutions suggested by previous studies have mainly focused on the concept of stiffness variation, its design and verification, and the explosive actions of
Wei Wang, Yanwei Zhao, Yangmin Li
doaj   +1 more source