Section 38
Chapter 37,079

Implementation of the finite element method in the three-dimensional discontinuous deformation analysis 3D-DDA

Grayeli, R.; Hatami, K.

International Journal for Numerical and Analytical Methods in Geomechanics 32.15


ISSN/ISBN: 0363-9061
DOI: 10.1002/nag.704
Accession: 037078932

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A modified three-dimensional discontinuous deformation analysis (3D-DDA) method is derived using four-noded tetrahedral elements to improve the accuracy of current 3D-DDA algorithm in practical applications. The analysis program for the modified 3D-DDA method is developed in a C++ environment and its accuracy is illustrated through comparisons with several analytical solutions that are available for selected problems. The predicted solutions for these problems using the modified 3D-DDA approach all show satisfactory agreement with the corresponding analytical results. Results presented in this paper demonstrate that the modified 3D-DDA method with discontinuous modeling capabilities offers a useful computational tool to determine stresses and deformations in practical problems involving fissured elastic media with reasonable accuracy. Abstract Copyright (2008), Wiley Periodicals, Inc.

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