Results 31 to 40 of about 173,346,329 (296)
FRICTION COEFFICIENT AND ELECTRIC STATIC CHARGE OF HEAD SCARF TEXTILES [PDF]
Journal of the Egyptian Society of Tribology, 2012 In the present work, friction coefficient and electrostatic charge generated from the friction of hair and head scarf of different textiles materials were measured. Test specimens of head scarf of common textile fibres such as cotton, nylon and polyester
M. K. Mohamed +2 more
doaj +1 more source
Calibration of discrete element simulation parameters for different kinds of rice grains
Shipin yu jixieObjectiveTo provide a theoretical reference for the optimal design of the polisher structure by comparing the differences in the contact parameters of different kinds of rice.MethodsUsing bench test and simulation test, and combining with MATLAB software
ZHU Linfeng +5 more
doaj +1 more source
Static and kinetic friction of rapeseed
Research in Agricultural Engineering, 2007 he present paper examines the static and kinetic coefficient of friction of rapeseed. The project utilized two methods of determination of coefficient of friction of rapeseed: according Eurocode 1 (kinetic) in direct shear test and (static) in model silo.
R. Rusinek, M. Molenda
doaj +1 more source
Journal of Manufacturing and Materials Processing, 2022 The coefficient of friction (COF) is an important parameter for mechanical engineers to consider when designing frictional connections. Previous work has shown that a surface microstructuring of the harder friction partner leads to a significant increase
Jonathan Schanner +3 more
doaj +1 more source
Quasi-static contact problem with finitely many degrees of freedom and dry friction [PDF]
, 2008 A quasi-static contact problem is considered for a non-linear elastic system with finitely many degrees of freedom. Coulomb's law is used to model friction and the friction coefficient may be anisotropic and may vary along the surface of the rigid ...
Schmid, Florian, F. Schmid
core +1 more source
TRIBOELECTRIFICATION OF POLYMERIC TEXTILES [PDF]
Journal of the Egyptian Society of Tribology, 2015 The present work investigates the possibility of having minimum electric static charge generated from the friction between the proposed polymeric composites consisting of polytetrafluoroethylene, (PTFE) and polyamide, (PA) fibres when sliding against ...
Y. AlEili, M. K. Mohamed, W. Y. Ali
doaj +1 more source
Analysis of friction among grain particles in warehousebased on finite element method
Liang you shipin ke-ji, 2019 In order to investigate the stress distribution between grain particles and the distribution of relative static friction between grain particles and silo walls, the ideal elastic-plastic constitutive relationship and Drucker-prager yield criterion were ...
LIU Shi-jie, WANG Ge-ge, GUO Yang
doaj +1 more source
Lubricants, 2023 The paper proposes the study of dry friction by means of a short eccentric rotor. The rotor was designed and realised in the laboratory. In an ideal frictionless situation, a rotor actuated by gravity will have an angular velocity which increases ...
Stelian Alaci +5 more
doaj +1 more source
Effect of potato contact parameters on seed metering performance using discrete element method
Spanish Journal of Agricultural Research, 2022 Aim of study: To study the effect of potato surface with or without sandy loam soil on seed metering performance, we investigated the motion behaviour of the potato seed particles during the seed metering process using a self-designed across-bridge ...
Linrong Shi +5 more
doaj +1 more source
FEBS Open Bio, EarlyView.In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey +4 more
wiley +1 more source