Results 11 to 20 of about 246,272 (261)

Programmable Design and Fabrication of 3D Variable–Stiffness Structure Based on Patterned Graphene‐Heating Network

Advanced Intelligent Systems, 2023
The 3D variable–stiffness structure can realize shape programming, reconstruction, adaptation, and locking, and therefore, it has a wide design creation space. Accurate local stiffness control is of considerable significance to the design and application
Qi Wang, Lvzhou Li, Xiaolong Lu, Xu Dong, Peng Jiang, Haijun Pan, Yu Liu, Ningyi Yuan, Jianning Ding   +8 more
doaj   +1 more source

Variable stiffness actuators: The user’s point of view [PDF]

The International Journal of Robotics Research, 2015
Since their introduction in the early years of this century, variable stiffness actuators (VSA) witnessed a sustained growth of interest in the research community, as shown by the growing number of publications. While many consider VSA very interesting for applications, one of the factors hindering their further diffusion is the relatively new ...
GRIOLI, GIORGIO, S. Wolf, GARABINI, MANOLO, CATALANO, MANUEL GIUSEPPE, E. Burdet, D. G. Caldwell, R. Carloni, W. Friedl, M. Grebenstein, M. Laffranchi, D. Lefeber, S. Stramigioli, N. G. Tsagarakis, V. M. Damme, B. Vanderborght, A. Albu Schaeffer, BICCHI, ANTONIO   +16 more
openaire   +4 more sources

Heterogeneous origami-architected materials with variable stiffness

Communications Materials, 2021
Origami-inspired metamaterials are attractive for their programmable shape-shifting properties but are typically characterized by low structural rigidity.
Yasuhiro Miyazawa, Hiromi Yasuda, Hyungkyu Kim, James H. Lynch, Kosei Tsujikawa, Takahiro Kunimine, Jordan R. Raney, Jinkyu Yang   +7 more
doaj   +1 more source

Twisted Rubber Variable-Stiffness Artificial Muscles

Soft Robotics, 2020
Variable-stiffness artificial muscles are important in many applications including running and hopping robots, human-robot interaction, and active suspension systems. Previously used technologies include pneumatic muscles, layer and granular jamming, series elastic actuators, and shape memory polymers. All these are limited in terms of cost, complexity,
Helps, Tim, Taghavi, Majid, Wang, Sihan, Rossiter, Jonathan   +3 more
openaire   +4 more sources

Conceptual mechanical design of antagonistic variable stiffness joint based on equivalent quadratic torsion spring

Science Progress, 2020
The variable stiffness joint is a kind of flexible actuator with variable stiffness characteristics suitable for physical human–robot interaction applications.
Jishu Guo
doaj   +1 more source

Variable Stiffness Composites: Optimal Design Studies [PDF]

Journal of Composites Science, 2020
This research work has two main objectives, being the first related to the characterization of variable stiffness composite plates’ behavior by carrying out a comprehensive set of analyses. The second objective aims at obtaining the optimal fiber paths, hence the characteristic angles associated to its definition, that yield maximum fundamental ...
Marques, Filipe Eduardo Correia, Mota, A. F., Loja, M.A.R.   +2 more
openaire   +2 more sources

Analysis of Variable-Stiffness Characteristics of Variable-Stiffness Elastic Actuator

, 2023
In order to improve the stiffness of the flexible robot,this paper proposes a variable-stiffness elastic actuator to improve the rigidity of flexible robots. The actuator integrates the working principles of a pneumatic drive, wedge structure, and particle blockage. the tensile stiffness of the actuator is nonlinearly negatively correlated with the air
He Peng, Xia Wang, Dexu Geng, Wenzhi Xu
openaire   +1 more source

A Variable Stiffness Actuator Based on Leaf Springs: Design, Model and Analysis

Actuators, 2022
In order to adapt to complex and changeable mechanical conditions and make the deformable mechanisms perform well statically and dynamically, variable stiffness joints have been studied extensively.
Yifan Lu, Yifei Yang, Yuan Xue, Jun Jiang, Qiang Zhang, Honghao Yue   +5 more
doaj   +1 more source

Modeling and design of energy efficient variable stiffness actuators [PDF]

, 2010
In this paper, we provide a port-based mathematical framework for analyzing and modeling variable stiffness actuators. The framework provides important insights in the energy requirements and, therefore, it is an important tool for the design of energy ...
Carloni, R., Stramigioli, S., Visser, L.C., Ünal, R.   +3 more
core   +2 more sources

Amputee perception of prosthetic ankle stiffness during locomotion

Journal of NeuroEngineering and Rehabilitation, 2018
Background Prosthetic feet are spring-like, and their stiffness critically affects the wearer’s stability, comfort, and energetic cost of walking. Despite the importance of stiffness in ambulation, the prescription process often entails testing a limited
Max K. Shepherd, Alejandro F. Azocar, Matthew J. Major, Elliott J. Rouse   +3 more
doaj   +1 more source