The three-dimensional Discontinuous Deformation Analysis (3D DDA) and its application to rock toppling.

Momma, Keiichi; Wu, Jiunn-Liang; Ohnishi, Yuzo; Nishiyama, Satoshi

doi:10.3313/jls1964.39.48

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…Momma et al [7] and Wu et al [8] demonstrated the applicability of simulating the behaviour of a slope failure using discontinuous deformation analysis (DDA), which is a discrete numerical analysis method. In addition, case studies demonstrating the applicability of using DDA to solve different kinds of practical problems remain an essential task, although the researches of DDA have continued for two decades.…”

Section: Introductionmentioning

confidence: 99%

Applying discontinuous deformation analysis to assess the constrained area of the unstable Chiu‐fen‐erh‐shan landslide slope

2006

Num Anal Meth Geomechanics

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SUMMARYChiu-fen-erh-shan landslide is a remarkable slope failure occurred during the Chi-Chi earthquake in 1999. In November of 2002, abnormal geomorphologic features, including buckling and ground subsidence, were observed on the lower slope of the Chiu-fen-erh-shan landslide. This study attempts to assess the constrained area of a future collapsing on the slope using a dynamic discrete numerical analysis method, discontinuous deformation analysis (DDA). The simulation results show that the depression in front of the toe of the slope provides a space for arresting the whole sliding rocks when only the unstable lower slope fails. However, as the whole slope slides, the rock fragments move farther into the memorial park and can impact other facilities resulting in the enlarging of constrained area. The authority should prohibit people from entrancing the constrained area in the rainy season.

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Section: Introductionmentioning

confidence: 99%

Applying discontinuous deformation analysis to assess the constrained area of the unstable Chiu‐fen‐erh‐shan landslide slope

2006

Num Anal Meth Geomechanics

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“…A flowchart of DDA is shown in Figure 1. Previous DDA studies focused on solving problems in two dimensions (2-D) [2][3][4], but in many engineering problems, three-dimensional (3-D) effects have to be considered [5][6][7][8]. To extend the original 2-D DDA to 3-D, Shi [9,10] and Liu and Kong [11] provided basic formulations for matrices for different…”

Section: Introductionmentioning

confidence: 99%

Vertex-to-face contact searching algorithm for three-dimensional frictionless contact problems

Juang

Lin

2005

Int. J. Numer. Meth. Engng

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SUMMARYThis article presents a new vertex-to-face contact searching algorithm for the three-dimensional (3-D) discontinuous deformation analysis (DDA). In this algorithm, topology is applied to the contact rule when any two polyhedrons are close to each other. Attempt is made to expand the original contact searching algorithm from two-dimensional (2-D) to 3-D DDA. Examples are provided to demonstrate the new contact rule for vertex-to-face contacts between two polyhedrons with planar boundaries.

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Simulation of the inclined jointed rock mass behaviors in a mountain tunnel excavation using DDA

Nhan

2020

Computers and Geotechnics

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The three-dimensional Discontinuous Deformation Analysis (3D DDA) and its application to rock toppling.

Cited by 5 publications

References 3 publications

Applying discontinuous deformation analysis to assess the constrained area of the unstable Chiu‐fen‐erh‐shan landslide slope

Applying discontinuous deformation analysis to assess the constrained area of the unstable Chiu‐fen‐erh‐shan landslide slope

Vertex-to-face contact searching algorithm for three-dimensional frictionless contact problems

Simulation of the inclined jointed rock mass behaviors in a mountain tunnel excavation using DDA

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