Energy-conserving contact interaction models for arbitrarily shaped discrete elements

被引：114

作者：

Feng, Y. T. ^{[1
]}

Han, K. ^{[1
]}

Owen, D. R. J. ^{[1
]}

机构：

[1] Swansea Univ, Coll Engn, Civil & Computat Engn Ctr, Swansea SA2 8PP, W Glam, Wales

来源：

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 2012年 / 205卷

关键词：

Discrete element; Normal contact model; Energy conservation; Arbitrarily shaped bodies;

D O I：

10.1016/j.cma.2011.02.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work aims to establish a unified theoretical framework for normal contact of arbitrarily shaped discrete elements in discrete element modelling solely based on the energy-conservation principle for elastic contact. It will show that the normal force must be a potential field vector associated with a potential. With the construction of an appropriate potential function, a complete normal contact model, including the magnitude and direction of the normal force and the normal contact line, can be unambiguously derived for a pair of any shaped bodies. The model in its final form is simple and has a clear geometric perspective for 2D bodies. It can also recover some well-known models for bodies with simple geometric shapes. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：169 / 177

页数：9