Results 51 to 60 of about 2,247,567 (328)

Bond tilting and sliding friction in a model of cell adhesion

, 2007
As a simple theoretical model of a cell adhering to a biological interface, we consider a rigid cylinder moving in a viscous shear flow near a wall. Adhesion forces arise through intermolecular bonds between receptors on the cell and their ligands on the
Jensen, O. E.; id_orcid, Reboux, S., Richardson, Giles, Jensen, O.E., Richardson, G.   +4 more
core   +1 more source

Shear thickening of dense suspensions: The role of friction [PDF]

Physics of Fluids, 2019
Shear thickening of particle suspensions is caused by a transition between lubricated and frictional contacts between the particles. Using three-dimensional (3D) numerical simulations, we study how the interparticle friction coefficient (μm) influences the effective macroscopic friction coefficient (μ) and hence the microstructure and rheology of dense
Vishnu Sivadasan, Eric Lorenz, Alfons G. Hoekstra, Daniel Bonn   +3 more
openaire   +3 more sources

Shear Controls Frictional Aging by Erasing Memory

Physical Review Letters, 2020
We simultaneously measure the static friction and the real area of contact between two solid bodies. These quantities are traditionally considered equivalent, and under static conditions both increase logarithmically in time, a phenomenon coined aging. Here we show that the frictional aging rate is determined by the combination of the aging rate of the
Sam Dillavou, Shmuel M. Rubinstein
openaire   +3 more sources

SKIN FRICTION BETWEEN UNDISTURBED OVER CONSOLIDATED SILTY CLAY SOILS AND CONCRETE

Journal of Engineering
Up to date, in many foundation design problems (especially for piles foundation), the shear strength (skin friction) between soil and construction materials of the foundation was usually estimated or correlated without any direct methods for measurement.
Azad Abbas Ahmed, Zuhair Kadhim JahanGer   +1 more
doaj   +1 more source

Thermodynamics and kinetics of boundary friction [PDF]

, 2011
A deterministic theory describing the behavior of an ultrathin lubricant film between two atomically-smooth solid surfaces is proposed. For the description of lubricant state the parameter of excess volume arising due to chaotization of solid medium ...
Metlov, L.S., Ляшенко, Яків Олександрович, Khomenko, Oleksii Vitaliiovych, Хоменко, Алексей Витальевич, Хоменко, Олексій Віталійович, Ляшенко, Яков Александрович, Liashenko, Yakiv Oleksandrovych   +6 more
core  

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

Mechanical Model for Shear Friction Capacity of Concrete at Construction Joints

Advances in Materials Science and Engineering, 2018
This study examined the reliability and limitations of code equations for determining the shear friction strength of a concrete interface with construction joints.
Seung-Jun Kwon, Keun-Hyeok Yang, Ju-Hyun Mun   +2 more
doaj   +1 more source

Experimental Study on Interface Frictional Characteristics between Sand and Steel Pipe Jacking

Applied Sciences, 2023
In order to study the variation law of shear frictional characteristics of the steel pipe jacking and sand interface under different working conditions, the shear stress–strain curve between five different particle sizes of sand and steel pipe jacking ...
Zhe Mei, Anfeng Xiao, Jiahao Mei, Jinqiu Hu, Peng Zhang   +4 more
doaj   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Calculating shear friction using an effective coefficient of friction [PDF]

PCI Journal, 2008
This paper examines the current formulas used for the calculation of the effective coefficient of friction μ e in PCI Design Handbook: Precast and Prestressed Concrete. It is not a commentary on the underlying methodology, but an examination of the original test data compared with these equations.
openaire   +1 more source