A dimensional analysis of scaling viscosity and velocity in DEM of constant strain rate tests on asphalt

被引：6

作者：

McDowell, G. R. ^{[1
]}

Collop, A. C. ^{[2
]}

Wu, J. W. ^{[2
]}

机构：

[1] Univ Nottingham, Nottingham Ctr Geomechan, Dept Civil Engn, Nottingham NG7 2RD, England

[2] Univ Nottingham, Nottingham Transportat Engn Ctr, Dept Civil Engn, Nottingham NG7 2RD, England

来源：

GEOMECHANICS AND GEOENGINEERING-AN INTERNATIONAL JOURNAL | 2009年 / 4卷 / 02期

关键词：

Burger's model; velocity; viscosity; DEM;

D O I：

10.1080/17486020902855704

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

This paper presents the results from discrete element modelling (DEM) of an idealised ( sand) asphalt mixture under constant strain rate ( velocity) compressive loading using the Burgers viscoelastic model. Using dimensional analysis it is shown that the effect of scaling applied velocity is the same as that of scaling both viscosities in the Burgers model by the same factor. This has been shown to be the case for a bonded aggregate, and it also has been shown to be applicable even when bond breakage occurs within the sample. This scaling method will be of great benefit in modelling tests on asphalt under different constant strain rates, simply by scaling both viscosities to minimise computational time.

引用

页码：171 / 174

页数：4

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