Results 31 to 40 of about 246,272 (261)

Efficient computation of inverse dynamics and feedback linearization for VSA-based robots [PDF]

open access: yes, 2016
We develop a recursive numerical algorithm to compute the inverse dynamics of robot manipulators with an arbitrary number of joints, driven by variable stiffness actuation (VSA) of the antagonistic type.
BUONDONNO, GABRIELE, DE LUCA, Alessandro
core   +1 more source

Buckling Cascade of Thin Plates: Forms, Constraints and Similarity [PDF]

open access: yes, 1999
We experimentally study compression of thin plates in rectangular boxes with variable height. A cascade of buckling is generated. It gives rise to a self-similar evolution of elastic reaction of plates with box height which surprisingly exhibits ...
A Pocheau   +7 more
core   +1 more source

Variable Volumetric Stiffness Fluid Mount Design

open access: yesShock and Vibration, 2004
Passive fluid mounts are commonly used in the automotive and aerospace applications to isolate the cabin from the engine noise and vibration. Due to manufacturing and material variabilities, no two identical fluid mount designs act the same.
Nader Vahdati, Mehdi Ahmadian
doaj   +1 more source

A Stiffness-Adjustable Hyperredundant Manipulator Using a Variable Neutral-Line Mechanism for Minimally Invasive Surgery [PDF]

open access: yes, 2013
In robotic single-port surgery, it is desirable for a manipulator to exhibit the property of variable stiffness. Small-port incisions may require both high flexibility of the manipulator for safety purposes, as well as high structural stiffness for ...
Cheng, Shanbao   +3 more
core   +1 more source

Variable stiffness element by granular jamming (Stiffness enhancement by a wrinkle-free outer membrane)

open access: yesNihon Kikai Gakkai ronbunshu, 2017
A flexible bag containing particles becomes rigid when the air inside the element is evacuated. Variable stiffness elements using granular jamming have been used for haptic displays and robotic orthoses helped by the soft and lightweight body.
Yuma KITAGAWA, Takashi MITSUDA
doaj   +1 more source

Dynamic response of a damaging masonry wall [PDF]

open access: yes, 2017
A nonlocal damage-plastic model is adopted to describe the nonlinear structural response of masonry structures. The model, based on a macromechanical approach, accounts for strength and stiffness degradation with hysteretic dissipation typically ...
Cristina Gatta   +2 more
core   +1 more source

A Pneumatic Particle-Blocking Variable-Stiffness Actuator

open access: yesSensors, 2023
In order to improve the stiffness of flexible robots, this paper proposes a variable-stiffness elastic actuator. The actuator integrates the working principles of a pneumatic drive, wedge structure, and particle blockage.
He Peng, Xia Wang, Dexu Geng, Wenzhi Xu
doaj   +1 more source

Stiffness modeling of a variable stiffness compliant link

open access: yesMechanism and Machine Theory, 2020
Abstract Recently, a variable stiffness robotic link based on the rotating beam concept has been developed for applications in physical human robot interaction. A substantial challenge for design of such links is the modeling of stiffness behavior to permit stiffness control.
Tyler Morrison, Hai-Jun Su
openaire   +2 more sources

COMP–PMEPA1 axis promotes epithelial‐to‐mesenchymal transition in breast cancer cells

open access: yesMolecular Oncology, EarlyView.
This study reveals that cartilage oligomeric matrix protein (COMP) promotes epithelial‐to‐mesenchymal transition (EMT) in breast cancer. We identify PMEPA1 (protein TMEPAI) as a novel COMP‐binding partner that mediates EMT via binding to the TSP domains of COMP, establishing the COMP–PMEPA1 axis as a key EMT driver in breast cancer.
Konstantinos S. Papadakos   +6 more
wiley   +1 more source

Concept for design of variable stiffness damper [PDF]

open access: yes, 1967
Damping mechanism, containing polymeric-like materials is applicable to a wide range of shock and vibration. The polymeric-like material changes from a relatively stiff material to a relatively soft, rubbery material in the region of their glass ...
Lohr, J. J.
core   +1 more source

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