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Title: Rigid body rotation and block internal discretization in DDA analysis
Authors: Cheng, YM 
Zhang, YH
Issue Date: 2000
Publisher: John Wiley & Sons
Source: International journal for numerical and analytical methods in geomechanics, 2000, v. 24, no. 6, p. 567-578 How to cite?
Journal: International journal for numerical and analytical methods in geomechanics 
Abstract: In the original formulation of DDA by Shi, a linear displacement function term is used. This has the limitations of uncontrolled block and stress distortion due to rigid body rotation. In the present paper, the authors propose a new iterative method which can avoid the distortion due to the rotation even when the rotation or number of time-step is large. Furthermore, the authors propose a simple internal discretization scheme which is applicable for both concave and convex polygon which is particularly important for a large block. The stress and strain distribution with a large block can be obtained with ease under this scheme. The numerical examples as shown have demonstrated the advantages of the present proposal in DDA analysis.
ISSN: 0363-9061
EISSN: 1096-9853
DOI: 10.1002/(SICI)1096-9853(200005)24:6<567
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