Determination of parameters of a tangential contact force model for viscoelastic spheroids (fruits) using a rheometer device

被引：28

作者：

Dintwa, E ^{[1
]}

Van Zeebroeck, M ^{[1
]}

Tijskens, E ^{[1
]}

Ramon, H ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Lab Landbouwwerktuigkunde, B-3001 Louvain, Belgium

来源：

BIOSYSTEMS ENGINEERING | 2005年 / 91卷 / 03期

关键词：

D O I：

10.1016/j.biosystemseng.2005.04.005

中图分类号：

S2 [农业工程];

学科分类号：

0828 [农业工程];

摘要：

This paper describes a method to experimentally determine the parameters of a tangential contact force model for spherical viscoelastic objects using a rheometer. The tangential contact force model is a necessary component of a discrete element model to simulate various granular matter systems. In this study, the discrete element model is being applied to simulate postharvest unit operations for fruits or similar agricultural produce. In the first part of the paper, a description of the contact force model is developed by extending the existing models for tangential contact of elastic spheres to include a viscous component. The second part describes the experiments performed and the associated results. The parameters under investigation are the material elastic shear modulus, the material viscosity and the friction coefficient. (c) 2005 Silsoc Research Institute. All rights reserved Published by Elsevier Ltd.

引用

页码：321 / 327

页数：7

共 27 条

[1]

AKYURT M, 1972, T ASAE, V15, P766

[2]

Model for collisions in granular gases [J].

Brilliantov, NV ;

Spahn, F ;

Hertzsch, JM ;

Poschel, T .

PHYSICAL REVIEW E, 1996, 53 (05) :5382-5392

[3]

CHEN P, 1972, T ASAE, V15, P1103

[4]

DEBAERDEMAEKER JG, 1976, T ASAE, V19, P346

[5]

DERESIEWICZ H, 1954, J APPL MECH, V21, P327

[6]

THE COX-MERZ RULE EXTENDED - A RHEOLOGICAL MODEL FOR CONCENTRATED SUSPENSIONS AND OTHER MATERIALS WITH A YIELD STRESS [J].

DORAISWAMY, D ;

MUJUMDAR, AN ;

TSAO, I ;

BERIS, AN ;

DANFORTH, SC ;

METZNER, AB .

JOURNAL OF RHEOLOGY, 1991, 35 (04) :647-685

[7]

Fung YC., 1994, 1 COURSE CONTINUUM M

[8]

Golacki K., 2001, ELECT J POLISH AGR U, V4

[9]

Hamann D. D., 1970, Transactions. American Society of Agricultural Engineers, V13, P893

[10]

HERTZSCH JM, 1995, J PHYS II, V5, P1725, DOI 10.1051/jp2:1995210

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