Energy equipartition in two-dimensional granular systems with spherical intruders

被引：47

作者：

Szelengowicz, I. ^{[1
]}

Hasan, M. A. ^{[2
]}

Starosvetsky, Y. ^{[3
]}

Vakakis, A. ^{[2
]}

Daraio, C. ^{[1
]}

机构：

[1] CALTECH, Grad Aerosp Labs, Pasadena, CA 91125 USA

[2] Univ Illinois, Dept Mech Sci & Engn, Urbana, IL 61822 USA

[3] Technion Israel Inst Technol, Fac Mech Engn, IL-3200 Haifa, Israel

来源：

PHYSICAL REVIEW E | 2013年 / 87卷 / 03期

基金：

美国国家科学基金会;

关键词：

SOLITARY WAVES; PROPAGATION; SOLITONS; CHAINS; BEADS;

D O I：

10.1103/PhysRevE.87.032204

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We study the effects of a line of spherical interstitial particles (or intruders) placed between two adjacent uncompressed chains of larger particles in a square packing of spheres, using experiments and numerical simulations. We excite one of the chains of particles adjacent to the intruders with an impact and show how energy is transmitted across the system until equipartition is reached from the excited (or impacted) chain to the absorbing (or adjacent) chain. The coupling of the two chains, although a purely two-dimensional effect, is modeled by a simplified one-and-a-half-dimensional system in which transverse motions of the particles are neglected. DOI: 10.1103/PhysRevE.87.032204

引用

页数：5

共 35 条

[1]

Boechler N, 2011, NAT MATER, V10, P665, DOI [10.1038/nmat3072, 10.1038/NMAT3072]

[2] Solitary waves in a chain of beads under Hertz contact [J].