A model of edge-to-edge contact for three-dimensional discontinuous deformation analysis

A model of edge-to-edge contact for three-dimensional discontinuous deformation analysis
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用于三维不连续变形分析的边对边接触模型

DOI:
10.1016/j.compgeo.2006.11.001
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发表时间:
2007-05
影响因子:
5.3
通讯作者:
Sun N
Sun N
中科院分区:
工程技术2区
文献类型:
--
作者:
Jiang QH;Yeung MR;Sun N

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三维非连续变形分析(3DDDA)的关键是一个严格的接触理论,管理许多三维块体的相互作用。这样的理论必须提供判断接触类型和接触位置的方法以及接触子矩阵的公式。这种接触理论的一部分是边对边接触模型。本文详细介绍了一种用于三维DDA的边-边接触模型,包括边-边接触类型的检测、第一入射面的判断和互穿准则。接触子矩阵的推导采用矢量分析和罚函数法。这种边到边的接触模型已被实施到3D DDA计算机程序中。三个算例验证了模型的合理性和三维DDA处理大运动和多块体交互的能力。
The key to three-dimensional discontinuous deformation analysis (3D DDA) is a rigorous contact theory that governs the interaction of many three-dimensional blocks. Such a theory must provide ways to judge contact types and contact locations and also formulas for contact submatrices. A part of this contact theory is an edge-to-edge contact model. This paper presents the details of an edge-to-edge contact model to be used in 3D DDA, including the detection of edge-to-edge contact type, judging of the first entrance faces, and the criteria for inter-penetration. Contact submatrices are derived by vector analysis and the penalty function method. This edge-to-edge contact model has been implemented into a 3D DDA computer program. Three test cases demonstrate the reasonableness of the model and the capability of 3D DDA to deal with large movements and multi-block interaction.
DOI: 10.1016/0148-9062(88)92293-0
发表时间: 1988-06-01
期刊: INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES & GEOMECHANICS ABSTRACTS
影响因子: --
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