Shear lid motion in DEM shear calibration and the effect of particle rearrangement on the internal friction angle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F22%3A10250780" target="_blank" >RIV/61989100:27350/22:10250780 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27730/22:10250780

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0032591022003114" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0032591022003114</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.powtec.2022.117417" target="_blank" >10.1016/j.powtec.2022.117417</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Shear lid motion in DEM shear calibration and the effect of particle rearrangement on the internal friction angle

Popis výsledku v původním jazyce

Shear cell tests are now commonly applied in particulate calibration procedures for the discrete element method. Usually, only the shear stresses at the shear plane in the particle bed are examined in short-time instances. This work aimed to find the regularities between the internal friction angle, the vertical position of the shear lid, and the rearrangements of particles in the layers during the shear test with the time instance duration of tens to hundreds of seconds. The Schulze RST Ring Shear Tester was used to compare real experiments to numerical DEM models of non-cohesive materials. The shear tests were investigated for different contact models and DEM input parameters. We also simultaneously monitored the overall specimen stiffness, material dilatancy during calibration, and shear stress. Particle bed stiffness increases with increasing shear modulus and coefficient of static friction for two contact models. The internal friction angle, which is a bulk property of the material determined by a set of particle properties, determines the ability (or resistance) to make displacements of rigid non-deformable particles in the shear testing process. The angle of the resultant of the vector of particle motion in space from the horizontal plane correlates with the angle of internal friction (at each location of the shear cell).

Název v anglickém jazyce

Shear lid motion in DEM shear calibration and the effect of particle rearrangement on the internal friction angle

Popis výsledku anglicky

Shear cell tests are now commonly applied in particulate calibration procedures for the discrete element method. Usually, only the shear stresses at the shear plane in the particle bed are examined in short-time instances. This work aimed to find the regularities between the internal friction angle, the vertical position of the shear lid, and the rearrangements of particles in the layers during the shear test with the time instance duration of tens to hundreds of seconds. The Schulze RST Ring Shear Tester was used to compare real experiments to numerical DEM models of non-cohesive materials. The shear tests were investigated for different contact models and DEM input parameters. We also simultaneously monitored the overall specimen stiffness, material dilatancy during calibration, and shear stress. Particle bed stiffness increases with increasing shear modulus and coefficient of static friction for two contact models. The internal friction angle, which is a bulk property of the material determined by a set of particle properties, determines the ability (or resistance) to make displacements of rigid non-deformable particles in the shear testing process. The angle of the resultant of the vector of particle motion in space from the horizontal plane correlates with the angle of internal friction (at each location of the shear cell).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Powder technology

ISSN

0032-5910

e-ISSN

1873-328X

Svazek periodika

403

Číslo periodika v rámci svazku

May 2022

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

117417

Kód UT WoS článku

000798215100003

EID výsledku v databázi Scopus

2-s2.0-85129424812