Column collapse of granular rods

Trepanier, Melissa; Franklin, Scott

doi:10.1103/physreve.82.011308

Cited by 61 publications

(52 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, the stability of piles is crucially dependent upon the aspect ratio of long objects. Ensembles of very long rods exhibit a solid-like shape stability [62,88].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Granular materials composed of shape-anisotropic grains

2013

View full text Add to dashboard Cite

Granulate physics has made considerable progress during the past decades in the understanding of static and dynamic properties of large ensembles of interacting macroscopic particles, including the modeling of phenomena like jamming, segregation and pattern formation, the development of related industrial applications or traffic flow control. The specific properties of systems composed of shape-anisotropic (elongated or flattened) particles have attracted increasing interest in recent years. Orientational order and self-organization are among the characteristic phenomena that add to the special features of granular matter of spherical or irregular particles. An overview of this research field is given.Final version published in Soft Matter,

show abstract

“…For example, the stability of piles is crucially dependent upon the aspect ratio of long objects. Ensembles of very long rods exhibit a solid-like shape stability [62,88].…”

Section: Discussionmentioning

confidence: 99%

“…Trepanier and Franklin studied the collapse of heaps of elongated grains [88]. They varied two different aspect ratios (particle length/diameter and pile height/radius).…”

Section: Stress Anisotropymentioning

confidence: 99%

Granular materials composed of shape-anisotropic grains

2013

View full text Add to dashboard Cite

show abstract

“…Among the studies attempting to address the puzzle, generally most researches deal with spherical grains [2][3][4], and several studies have focused on the aspherical grains, such as ellipsoids [5,6] or rods [7,8], which have induced qualitatively new features of the volume fraction of granular piles [9,10], the orientation order and coordination number [11,12], stress distribution [13] and propagation [14] in granular piles, and the jamming transition [15,16]. Whatever grains are used in investigating the packing properties, nearly all researches have focused on individual grains.…”

Section: Introductionmentioning

confidence: 99%

Bottom stresses of static packing of granular chains

Wen¹,

Wang²,

Hao³

et al. 2015

Physica A: Statistical Mechanics and its Applications

View full text Add to dashboard Cite

h i g h l i g h t s• Bottom stress of a granular chains column is measured precisely and reproducibly.• Scaling behavior of the stress saturation curves agrees with the Janssen model. • Saturation mass is shown as a nonmonotonic function of the chain length.• A transition of the saturation mass is found at the persistence length of chains. • Entanglements as a possible explanation for nonmonotonic behavior are presented. a b s t r a c tWe experimentally measure the static stress at the bottom of a granular chains column with a precise and reproducible method. The relation, between the filling mass and the apparent mass converted from the bottom stress, is investigated on various chain lengths. Our measurements reconfirm that the scaling behavior of the stress saturation curves is in accord with the theoretical expectation of the Janssen model. Additionally, the saturation mass is displayed as a nonmonotonic function of the chain length, where a distinguishing transition of the saturation mass is found at the persistence length of the granular chain. We repeat the measurement with another measuring methodology and a silo with different size, respectively, the position of the peak maintains robust. In order to understand the transition of the saturation mass, the friction coefficient and the volume fraction of granular chains are also measured, from which Janssen parameter can be calculated. Finally, we preliminarily measure the bottom stress for two distinct packing structures of long chains, find the effect of the entanglements on the bottom stress, and argue that the entanglements might be responsible for the transition of the saturation mass.

show abstract

“…Indeed the shape of the grains [2,13,14] and the contact anisotropy [8] have been recently used to help crossing the jamming transition and to increase the stability/rigidity of granular systems. Different particle shapes, such as long and thin rods [15], staples [4], Z-shaped [6] and starshaped [2,5] particles have been shown to bring additional rigidity to 3D packings, compared with spherical shapes [16].…”

Section: Introductionmentioning

confidence: 99%

Structure of hexapod 3D packings: understanding the global stability from the local organization

et al. 2017

View full text Add to dashboard Cite

Abstract.Aggregates of non-convex particles have shown to be particularly stable which makes them good candidates to design new lightweight and reversible structures. However, few is known about the fundamental reason of their stability. In this paper we presents a novel experimental method to investigate the local structure of piles made of hexapod particles. This method is based on X-ray scanning and on an accurate homemade particle detection code. It permits to get the position and orientation of each particle as well as to detect their contact points. Measurement of the coordination numbers, statistics of the contact positions and local density evaluation for different packing configurations show a good agreement with the previous studies carried out at the global scale and permits to explain the main local mechanisms leading to stable structures.

show abstract

Column collapse of granular rods

Cited by 61 publications

References 20 publications

Granular materials composed of shape-anisotropic grains

Granular materials composed of shape-anisotropic grains

Bottom stresses of static packing of granular chains

Structure of hexapod 3D packings: understanding the global stability from the local organization

Contact Info

Product

Resources

About