Some potentials of discontinuous deformation analysis method

Y. Y. Jiao, X. L. Zhang, S. L. Wang, J. Zhao

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

Discontinuous deformation analysis (DDA) proposed by Shi (1988) is a discontinuum-based method for simulating the discontinuous deformation behavior of a jointed rock mass. DDA adopts the implicit algorithm and establishes the simultaneous equilibrium equations by minimizing the total potential energy of the entire block system. Stepwise approach is used to accumulate small displacements and deformations of the blocks to large ones. The contacts are treated by using the penalty method. Because DDA keeps the advantageous features of both FEM and explicit DEM, it has been considered one of the more promising discontinuum methods in rock mechanics and has been widely applied in rock engineering analysis. This paper investigates the potential application areas of DDA method. The original DDA algorithm has been modified and applied to simulate shock wave propagation and rock failure process. The results of numerical examples show fair agreement with field or indoor test data, indicating that the modified DDA method has a powerful capability in solving many difficult rock mechanics problems.

Original languageEnglish
Title of host publicationProceedings of the International Young Scholars' Symposium on Rock Mechanics - Boundaries of Rock Mechanics Recent Advances and Challenges for the 21st Century
Pages889-893
Number of pages5
Publication statusPublished - 26 Nov 2008
Externally publishedYes
EventInternational Young Scholars' Symposium on Rock Mechanics - Boundaries of Rock Mechanics Recent Advances and Challenges for the 21st Century - Beijing, China
Duration: 28 Apr 20082 May 2008

Publication series

NameProceedings of the International Young Scholars' Symposium on Rock Mechanics - Boundaries of Rock Mechanics Recent Advances and Challenges for the 21st Century

Conference

ConferenceInternational Young Scholars' Symposium on Rock Mechanics - Boundaries of Rock Mechanics Recent Advances and Challenges for the 21st Century
CountryChina
CityBeijing
Period28/04/082/05/08

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