Results 51 to 60 of about 115,932 (276)

Statistics of the contact network in frictional and frictionless granular packings [PDF]

, 2002
Simulated granular packings with different particle friction coefficient mu are examined. The distribution of the particle-particle and particle-wall normal and tangential contact forces P(f) are computed and compared with existing experimental data ...
A.S. Clarke, C. Thornton, C.h. Liu, C.S. O’Hern, D.L. Blair, D.M. Mueth, F. Radjai, F. Radjai, F. Radjai, F. Radjai, G. Løvoll, Gary S. Grest, H.M. Jaeger, J. Schafer, J.-P. Bouchaud, J.E.S. Socolar, J.G. Geng, J.G. Geng, J.P. Wittmer, James W. Landry, L. Vanel, L.E. Silbert, L.E. Silbert, Leonardo E. Silbert, M.E. Cates, N.W. Mueggenburg, O. Tsoungui, O.R. Walton, P.A. Cundall, R. Jullien, S. Torquato, S.F. Edwards, S.N. Coppersmith, T. Aste   +33 more
core   +3 more sources

Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding

Advanced Engineering Materials, EarlyView.
This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou, Mohammed Benwadih, Arnaud Gabas, Lina Kadura, Minh‐Quyen Le, Daniel Grinberg, Pierre‐Jean Cottinet   +6 more
wiley   +1 more source

Rheological Chaos of Frictional Grains

, 2016
A two-dimensional dense fluid of frictional grains is shown to exhibit time-chaotic, spatially heterogeneous flow in a range of stress values, $\sigma$, chosen in the unstable region of s-shaped flow curves.
Grob, Matthias, Heussinger, Claus, Zippelius, Annette   +2 more
core   +1 more source

Multi-contact Walking Pattern Generation based on Model Preview Control of 3D COM Accelerations [PDF]

, 2016
We present a multi-contact walking pattern generator based on preview-control of the 3D acceleration of the center of mass (COM). A key point in the design of our algorithm is the calculation of contact-stability constraints.
Caron, Stéphane, Kheddar, Abderrahmane
core   +2 more sources

Transfer of Energy and Momentum Between Magnetoactive Surface Microstructure and a Solid Object

Advanced Engineering Materials, EarlyView.
We demonstrate that magnetoactive multilamellar arrays subjected to a rotating magnetic field can function as platforms for controlled transport of physical objects. Through systematic experimental investigation, we elucidate the underlying physical mechanisms determining the upper limit of the achievable transportation speed in such magnetic “conveyor‐
Arne Geldof, Jan Kopačin, Izidor Straus, Raphael Kriegl, Gaia Kravanja, Luka Hribar, Matija Jezeršek, Mikhail Shamonin, Gašper Kokot, Irena Drevenšek‐Olenik   +9 more
wiley   +1 more source

Local contact numbers in two dimensional packings of frictional disks

, 2009
We analyze the local structure of two dimensional packings of frictional disks numerically. We focus on the fractions x_i of particles that are in contact with i neighbors, and systematically vary the confining pressure p and friction coefficient \mu. We
Henkes, Silke, Shundyak, Kostya, van Hecke, Martin, van Saarloos, Wim   +3 more
core   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Empirical Analysis of Frictional Forces in Advancing and Receding Triple‐Phase Contact Lines: Effect of Surface Roughness

Advanced Materials Interfaces
Predicting the open‐surface movement of liquids on solids requires a fundamental understanding of adhesion and the interplay of frictional forces at the moving contact line.
Sreya Sarkar, Arani Mukhopadhyay, Anish Pal, Constantine M. Megaridis   +3 more
doaj   +1 more source

Influence of Nanoparticles in Lubricant on Sliding Contact of Atomic Rough Surfaces—A Molecular Dynamics Study

Lubricants
In this work, large-scale molecular dynamics (MD) computational simulations were performed in order to explore the sliding contact responses of rough surfaces with hexadecane lubricant and added nanoparticles.
Xuan Zheng, Lihong Su, Guanyu Deng
doaj   +1 more source

Frictional contact problem in building constructions analysis

Magazine of Civil Engineering, 2020
The article discusses the contact interaction of deformable building constructions or their parts. Such interaction is realized for example at: hydraulic structures; suspension pile foundations, girder, raft, sheet piling; friction bearings and kinematic
Aleksandr Popov, Alexander Lovtsov
doaj   +1 more source