Results 41 to 50 of about 384,608 (182)

Effect of potato contact parameters on seed metering performance using discrete element method

open access: yesSpanish 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

Effect of Friction on Dense Suspension Flows of Hard Particles

open access: yes, 2017
We use numerical simulations to study the effect of particle friction on suspension flows of non-Brownian hard particles. By systematically varying the microscopic friction coefficient $\mu_p$ and the viscous number $J$, we build a phase diagram that ...
DeGiuli, E., Trulsson, M., Wyart, M.
core   +1 more source

Friction analysis of kinetic schemes: the friction coefficient [PDF]

open access: yesBiochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1995
Friction analysis is proposed as the application of general control analysis to single enzymes to describe the control of elementary kinetic steps on the overall catalytic rate. For each transition, a friction coefficient is defined that measures the sensitivity of the turnover rate to the free energy of the transition state complex of the transition ...
openaire   +3 more sources

Calibration of discrete element simulation parameters for different kinds of rice grains

open access: yesShipin yu jixie
ObjectiveTo 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

Automated Determination of Friction Coefficient

open access: yesMűszaki Tudományos Közlemények, 2020
Abstract The presented research is designed to meet a particular challenge facing the industry. Its aim is to automate the process of friction coefficient determination, using a method that enables quick and easy repeatability of measurements developed by S.C. Plasmaterm S.A in Târgu Mureş.
Farmos, Rudolf László   +3 more
openaire   +2 more sources

The coefficient of friction of individual potatoes and various handling materials - Short communication

open access: yesResearch in Agricultural Engineering, 2012
The dynamic coefficient of friction of single potatoes was determined on mild steel, rubber and plastic, for tubers in each of four conditions: dry and dirty, wet and dirty, clean and wet and clean and dry.
C.F.H. Bishop   +3 more
doaj   +1 more source

Force autocorrelation function in linear response theory and the origin of friction

open access: yes, 2008
Vanishing of the equilibrium Green-Kubo fluctuation expression for the friction coefficient of a massive particle moving in a finite-volume liquid is usually interpreted as an unphysical consequence of the finite volume. Here I show that it is a physical
Petravic, Janka
core   +1 more source

Numerical and analytical modeling of orthogonal cutting : The link between local variables and global contact characteristics [PDF]

open access: yes, 2011
The response of the tool–chip interface is characterized in the orthogonal cutting process by numerical and analytical means and compared to experimental results. We study the link between local parameters (chip temperature, sliding friction coefficient,
CHERIGUENE, Rachid   +2 more
core   +5 more sources

The dependence of the dry friction threshold on rupture dynamics

open access: yes, 2011
The static friction coefficient between two materials is considered to be a material constant. We present experiments demonstrating that the ratio of shear to normal force needed to move contacting blocks can, instead, vary systematically with ...
Ben-David, Oded, Fineberg, Jay
core   +1 more source

Magnetic non-contact friction from domain wall dynamics actuated by oscillatory mechanical motion [PDF]

open access: yes, 2019
Magnetic friction is a form of non-contact friction arising from the dissipation of energy in a magnet due to spin reorientation in a magnetic field.
Laurson, Lasse, Rissanen, Ilari
core   +2 more sources

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