基于中心差分方案的显式三维非连续变形分析法

doi:10.13722/j.cnki.jrme.2018.0084

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Abstract An explicit three-dimensional discontinuous deformation analysis(3D DDA) method based on the central difference scheme is proposed to improve the computational efficiency of the traditional 3D DDA method in solving large-scale discontinuous problems. With the explicit 3D DDA method，it is not only easier and faster to obtain the solutions，but also more convenient to achieve the efficient parallel computing. Based on the first entrance and shortest exit principle，formulae are derived to estimate the positions of entrance points during the entrance process regarding two basic entrance mode and the entrance information is determined. These contact treatment measures ensure the computational accuracy and the tempo-spatial coherence of the contact constraints. Numerical examples demonstrate that the explicit 3D DDA has sufficient computational accuracy and higher computational efficiency. The explicit 3D DDA is promising for the discontinuous numerical analysis in large scale rock engineering after achieving parallel computing.

Key words： numerical analysis three-dimensional discontinuous deformation analysis(3D DDA) central difference scheme first entrance and shortest exit principle contact transfer

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	Articles by authors
	ZHANG Hong1
	ZHANG Yingbin2
	ZHENG Lu3
	4
	WU Wei1

Cite this article:

ZHANG Hong1,ZHANG Yingbin2,ZHENG Lu3, et al. Explicit three-dimensional discontinuous deformation analysis based on a central difference scheme#br#[J]. , 2018, 37(7): 1649-1658.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2018.0084 OR http://www.rockmech.org/EN/Y2018/V37/I7/1649

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