Effect of rolling friction on wall pressure, discharge velocity and outflow of granular material from a flat-bottomed bin

Balevičius, Robertas; Sielamowicz, Irena; Mróz, Z.; Kačianauskas, Rimantas

doi:10.1016/j.partic.2012.07.002

Cited by 45 publications

(19 citation statements)

References 64 publications

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“…And at this time the over-pressure occurred in the height of 100 mm. Over-pressure is the pressure when the material discharging is larger than the material is stable at some height, and it is also observed by other researchers [18][19][20][21]. This over-pressure is very dangerous for hopper, so it should be carefulness when design hopper.…”

Section: Effect Of Friction Coefficient On the Pressurementioning

confidence: 79%

Discrete element method modeling of corn-shaped particle flow in rectangular hopper

Jin

Wang

et al. 2010

Front. Archit. Civ. Eng. China

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Discrete element method (DEM) was developed to simulate the corn-shaped particles flow in the hopper. The corn-shaped particle was described by four overlapping spheres. Contact force and gravity force were considered when establishing the model. In addition, flowing characteristic of particles in the hopper was studied. The effect of friction coefficient on the wall pressure, voidage and velocity distribution was analyzed. The results show that the discharge rate decreases with the friction coefficient increasing; and the "over-pressure" phenomenon occurs in the discharging process for two different friction coefficients. The voidage also increases as the friction coefficient increasing. And the velocity distribution is more uniformity and is closer to the mass flow with the friction coefficient deceasing.

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Section: Effect Of Friction Coefficient On the Pressurementioning

confidence: 79%

Discrete element method modeling of corn-shaped particle flow in rectangular hopper

Jin

Wang

et al. 2010

Front. Archit. Civ. Eng. China

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“…Relying on these fundamental works, Cundall and Strack [4] pioneered for introducing the numerical discrete element method (DEM), where the granular material has been treated as a conglomeration of solid particles undergoing a time-dependent dynamic motion subjected to the resultant action of forces, including the contact tractions and contact torques, according to second and third Newton's laws within the rigid boundary domain. The method has been recognized as a powerful modeling approach specifying direct introspection of the particle micro-properties at steady or transient deformation states without any a priori global assumptions, usually required for the continuum-based modeling [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Modeling of combined slip and finite sliding at spherical grain contacts

Balevičius

Mróz

2018

Granular Matter

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The present paper is aimed at developing the analytical description of the interaction of two contacting spheres for several classes of slip and sliding trajectories, typical in the experimental testing. The analysis accounts for memory effects in the slip regime and configurational effects in the sliding regime, expressed in terms of an active loading surface and memory surfaces within the space of contact forces. Analytical relations for contact response are derived for linear and piecewise-linear motion trajectories of the sphere. The problem of multiple contact interaction of the sphere moving over the regularly packed granular bed is also considered analytically. It is demonstrated that the dual contact activation-separation processes occur within the combined slip-sliding modes, essentially affecting the distribution of contact tractions. The results obtained are relevant for the class of contact problems requiring analysis of interaction of slip and sliding displacements, in particular in testing grain contact interaction aimed at specification of elastic, frictional and wear parameters.

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“…Segundo Balevičius et al (2012) o comportamento de rolamento pode ser descrito por uma abordagem padrão que combina o torque de rolamento com o ângulo de rotação. Realisticamente, a dinâmica do rolamento puro de corpos deformáveis é bastante complicada e não é claramente compreendida, apesar desse comportamento ter sido extensivamente estudado tanto por abordagens teóricas quanto experimentais.…”

Section: Coeficiente De Atrito De Rolamentounclassified

“…Geralmente, o rolamento é acoplado com deslizamento por fricção e é um fenômeno muito complexo, onde o papel dos parâmetros de rolamento ainda se apresenta em discussão na literatura (BALEVIČIUS et al, 2012). Por conseguinte, ainda é necessária a calibração dos parâmetros dos modelos de contato através de trabalhos experimentais e a partir de simulações numéricas, afim de descrever os fenômenos exibidos pelos materiais granulares em nível macroscópico (BALEVIČIUS et al, 2012).…”

Section: Coeficiente De Atrito De Rolamentounclassified

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Estudo da segregação de material granular em tambor rotatório empregando a abordagem numérica Lagrangeana

Brandao¹

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Effect of rolling friction on wall pressure, discharge velocity and outflow of granular material from a flat-bottomed bin

Cited by 45 publications

References 64 publications

Discrete element method modeling of corn-shaped particle flow in rectangular hopper

Discrete element method modeling of corn-shaped particle flow in rectangular hopper

Modeling of combined slip and finite sliding at spherical grain contacts

Estudo da segregação de material granular em tambor rotatório empregando a abordagem numérica Lagrangeana

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