Results 61 to 70 of about 56,073 (234)

Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots

Advanced Robotics Research, EarlyView.
A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun, Liang Zhang, Jianwen Zeng, Xuefeng Wang   +3 more
wiley   +1 more source

On Cattaneo–Christov heat flux in the flow of variable thermal conductivity Eyring–Powell fluid

Results in Physics, 2017
Here Cattaneo–Christov heat flux model is employed for heat transfer in the stagnation point flow due to stretching cylinder. This consideration modifies the Fourier’s law of heat conduction through thermal relaxation time.
Tasawar Hayat, Muhammad Ijaz Khan, Muhammad Waqas, Ahmed Alsaedi   +3 more
doaj   +1 more source

On a nonlinear elasticity problem with friction and Sobolev spaces with variable exponents

Fixed Point Theory and Algorithms for Sciences and Engineering, 2022
We consider a nonlinear elasticity problem in a bounded domain, its boundary is decomposed in three parts: lower, upper, and lateral. The displacement of the substance, which is the unknown of the problem, is assumed to satisfy the homogeneous Dirichlet ...
Mahdi Boukrouche, Boubakeur Merouani, Fayrouz Zoubai   +2 more
doaj   +1 more source

A constitutive law for dense granular flows

, 2006
A continuum description of granular flows would be of considerable help in predicting natural geophysical hazards or in designing industrial processes. However, the constitutive equations for dry granular flows, which govern how the material moves under ...
A Daerr, A Lemaître, C Ancey, C Josserand, D Ertas, D Fenistein, D Howell, DC Drucker, DM Mueth, F Da Cruz, GDR MiDi group, On dense granular flows, HM Jaeger, I Goldhirsch, I Iordanoff, IS Aranson, L Bocquet, LE Silbert, LS Mohan, O Pouliquen, O Pouliquen, O Pouliquen, Olivier Pouliquen, P Jop, P Mills, Pierre Jop, RI Tanner, SB Savage, SB Savage, T Börzsönyi, V Kumaran, Y Forterre, Yoël Forterre   +31 more
core   +6 more sources

A multi-level interface model for damaged masonry [PDF]

, 2013
The aim of the present work is to propose a new micro-mechanical model in the context of the deductive approach used to derive interface models. This model, based on a previous study introduced previously by A. Rekik and F.
Lebon, Frédéric, Raffa, Maria Letizia, Sacco, Elio, Welemane, Hélène   +3 more
core   +3 more sources

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Velocity and Temperature Dependence of Steady‐State Friction of Natural Gouge Controlled by Competing Healing Mechanisms

Geophysical Research Letters
The empirical rate‐ and state‐dependent friction law is widely used to explain the frictional resistance of rocks. However, the constitutive parameters vary with temperature and sliding velocity, preventing extrapolation of laboratory results to natural ...
Shiying Nie, Sylvain Barbot
doaj   +1 more source

The Effect of Grading Index on Two-dimensional Stress and Strain Distribution of FG Rotating Cylinder Resting on a Friction Bed Under Thermomechanical Loading [PDF]

Journal of Stress Analysis, 2019
This paper presents two-dimensional stress and strain behavior of a FG rotating cylindrical shell subjected to internal-external pressure, surface shear stresses due to friction, an external torque, and constant temperature field.
M. Omidi bidgoli, A. Loghman, M. Arefi
doaj   +1 more source

Advancing Energy Materials by In Situ Atomic Scale Methods

Advanced Energy Materials, Volume 15, Issue 11, March 18, 2025.
Progress in in situ atomic scale methods leads to an improved understanding of new and advanced energy materials, where a local understanding of complex, inhomogeneous systems or interfaces down to the atomic scale and quantum level is required. Topics from photovoltaics, dissipation losses, phase transitions, and chemical energy conversion are ...
Christian Jooss, Michael Seibt, Martin Wenderoth, Oliver Bünermann, Ole Bunjes, Till Domröse, Christian Eckel, Francesca Falorsi, Christoph Flathmann, Monica Kolek Martinez de Azagra, Matthias Krüger, Jonas Lindner, Tobias Meyer, Claus Ropers, Ulrich Ross, Kai Rossnagel, Sreeju Sreekantan Nair Lalithambika, Simone Techert, Georg A. Traeger, Cynthia Volkert, R. Thomas Weitz, Alec M. Wodtke   +21 more
wiley   +1 more source

A Review of Numerical Techniques for Frictional Contact Analysis

Lubricants
This review analyzes numerical techniques for frictional contact problems, highlighting their strengths and limitations in addressing inherent nonlinearities and computational demands.
Govind Vashishtha, Sumika Chauhan, Riya Singh, Manpreet Singh, Ghanshyam G. Tejani   +4 more
doaj   +1 more source