Validation and time step determination of discrete element modeling of flexible fibers

被引：85

作者：

Guo, Y. ^{[1
]}

Wassgren, C. ^{[2
]}

Hancock, B. ^{[3
]}

Ketterhagen, W. ^{[3
]}

Curtis, J. ^{[1
]}

机构：

[1] Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA

[2] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA

[3] Pfizer Inc, Groton, CT 06340 USA

来源：

POWDER TECHNOLOGY | 2013年 / 249卷

基金：

美国国家科学基金会;

关键词：

Flexible fiber; Discrete Element Method; Validation; Time step; DYNAMIC SIMULATION; VIBRATION; FLOWS;

D O I：

10.1016/j.powtec.2013.09.007

中图分类号：

TQ [化学工业];

学科分类号：

081705 [工业催化];

摘要：

In this paper, a flexible fiber model, based on the Discrete Element Method (DEM) and the bonded-particle model by Potyondy and Cundall (International Journal of Rock Mechanics & Mining Sciences 41 (2004) 1329-1364), is comprehensively examined by considering the cases of the bending, stretching, and twisting of a fiber under static loads and dynamic vibrations. The numerical simulation results are in good agreement with the analytical predictions from elastic thin beam theories. In addition, a time step criterion is discussed and proposed in order to ensure numerical stability and obtain correct dynamic behaviors of fibers. It is found that the time step should be less than the time it takes for an axial extensional/compressional wave to travel a single bond length. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：386 / 395

页数：10

共 19 条

[1]

Flexible ceramic nanofibermat electrospun from TiO2-SiO2 aqueous sol [J].

Biswas, Apratim ;

Park, Hyoungjun ;

Sigmund, Wolfgang M. .

CERAMICS INTERNATIONAL, 2012, 38 (01) :883-886

[2]

The destemming of grapes: Experiments and discrete element modelling [J].

Coetzee, Corne J. ;

Lombard, Stephanus G. .

BIOSYSTEMS ENGINEERING, 2013, 114 (03) :232-248

[3]

Validation of partially flexible rod model based on discrete element method using beam deflection and vibration [J].

Duong Hong Nguyen ;

Kang, Namcheol ;

Park, Junyoung .

POWDER TECHNOLOGY, 2013, 237 :147-152

[4]

Fortgang J., 2005, P 2005 IEEE ASME INT

[5]

Simulation of dynamic processes on flexible filamentous particles in the transverse section of a rotary dryer and its comparison with ideo-imaging experiments [J].

Geng, Fan ;

Li, Yimin ;

Wang, Xinyong ;

Yuan, Zhulin ;

Yan, Yaming ;

Luo, Dengshan .

POWDER TECHNOLOGY, 2011, 207 (1-3) :175-182

[6]

Gere J., 1987, MECH MAT

[7]

Effects of bending and torsion rigidity on deformation and breakage of flexible fibers: A direct simulation study [J].

Kabanemi, Kalonji K. ;

Hetu, Jean-Francois .

JOURNAL OF CHEMICAL PHYSICS, 2012, 136 (07)

[8]

Discrete particle-continuum fluid modelling of gas-solid fluidised beds [J].

Kafui, KD ;

Thornton, C ;

Adams, MJ .

CHEMICAL ENGINEERING SCIENCE, 2002, 57 (13) :2395-2410

[9]

Simulation of the motion of flexible fibers in viscous fluid flow [J].

Lindstrom, Stefan B. ;

Uesaka, Tetsu .

PHYSICS OF FLUIDS, 2007, 19 (11)

[10]

A numerical model for simulating mechanical behavior of flexible fibers [J].

Ning, ZM ;

Melrose, JR .

JOURNAL OF CHEMICAL PHYSICS, 1999, 111 (23) :10717-10726

← 1 2 →