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Publications associées (28)

Behaviour of stiffened extended shear tab connections under gravity induced shear force

Dimitrios Lignos

Stiffened extended shear tab connections (either in full-depth or partial-depth configurations) are widely used to connect simply supported beams to the web of supporting girders or columns. Full-scale laboratory tests of stiffened extended shear tab conne ...

2018

Energy analysis of a DEAP based cylindrical actuator coupled with a radial negative stiffness spring

Yves Perriard, Yoan René Cyrille Civet, Jonathan André Jean-Marie Chavanne

The main problem to obtain considerable deformation with dielectric electro-active polymer based technology is the electrical breakdown. A simple solution consists in pre-stretching the elastomer before activating it which cancels the snap-through effect a ...

Spie-Int Soc Optical Engineering2017

JammJoint: A Variable Stiffness Device Based on Granular Jamming for Wearable Joint Support

Auke Ijspeert, Jamie Paik, Simon Lukas Hauser, Matthew Aaron Robertson

In robotics, controlling the stiffness of the joints that contribute to the robots’ degree of freedom dictates the adaptability, versatility, and safety of the whole system.We can achieve variable stiffness or impedance in a robotic system purely by the co ...

2017

Apparatus for treating excess intraocular fluid

Nikolaos Stergiopoulos, Constantinos Stergiopulos

Apparatus and methods are provided for treating diseases that produce elevated intraocular pressures, such as glaucoma, wherein the device operates on the principles of a Starling resistor, and includes a housing, a deformable structure and a spring mounte ...

2017

Variable Stiffness Device and Method of Manufacturing the Same

Dario Floreano, Stefano Mintchev, Alice Tonazzini

A variable stiffness device, including a core including a low melting point alloy, an encapsulation surrounding the core, the encapsulation made of an elastic material and sealing the core, and a heating device arranged around the encapsulation, configured ...

2017

Series Elastic Actuation for Assistive Orthotic Devices: Case Study of Pneumatic Actuator

Hannes Bleuler, Mohamed Bouri, Jonathan Olivier, Amalric Louis Ortlieb

Wearable assistive robotics is a modern field where intelligent actuated systems work in collaboration with the body to replace a lost limb, to enhance performances (e.g. carrying load, walking, running, jumping) or to train or rehabilitate specific activi ...

Springer-Verlag Berlin2016

Structure of the T4 baseplate and its function in triggering sheath contraction

Henning Paul-Julius Stahlberg, Petr Leiman, Mikhail Shneyder, Ricardo Cesar Guerrero Ferreira, Christopher Browning, Nicholas Michael Ian Taylor

Several systems, including contractile tail bacteriophages, the type VI secretion system and R-type pyocins, use a multiprotein tubular apparatus to attach to and penetrate host cell membranes. This macromolecular machine resembles a stretched, coiled spri ...

Nature Publishing Group2016

Modeling, Characterization and Control of a Novel Torsional Shape Memory Alloy (SMA) Actuator

Jamie Paik, Zhenishbek Zhakypov, Jian-Lin Huang

Thermally activated shape memory alloy (SMA) actuators are direct-driven and produce high power density with design versatility. However, beyond their linear actuation in spring forms there is little variety and their application in robotics is limited by ...

Institute of Electrical and Electronics Engineers2016