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The numerical, discrete element, Discontinuous Deformation Analysis (DDA) method was developed by Dr. Gen-hua Shi while he was working at the University of California, Berkeley, under the supervision of Prof. Richard E. Goodman in the late 1980s. Two-dimensional DDA was published in 1993 and three-dimensional DDA in 2001. Since its publication DDA has been verified, validated and applied in numerous studies worldwide and is now considered a powerful and robust method to address both static and dynamic engineering problems in discontinuous rock masses.
In this book Yossef H. Hatzor and Guowei Ma, co-chairs of the International Society for Rock Mechanics (ISRM) Commission on DDA, join Dr. Shi in authoring a monograph that presents the state of the art in DDA research. A comprehensive discussion of DDA development since its publication is provided in Chapter 1, followed by concise reviews of 2D and 3D DDA in chapters 2 and 3. Procedures to select geological and numerical input parameters for DDA are discussed in Chapter 4, and DDA validation and verification is presented in Chapter 5. Applications of DDA in underground and rock slope engineering projects are discussed in chapters 6 and 7. In Chapter 8 the novel contact theory recently developed by Dr. Shi is published in its complete form, for the first time.
This book is published within the framework of the ISRM Book Series and is the contribution of the ISRM DDA Commission to the international rock mechanics community.
List of contents
Introduction. Theory of DDA. Three Dimensional DDA. Geological Input Parameters for Realistic DDA Modeling. DDA Verification and Validation. DDA in Rock Tunneling Engineering. DDA in Rock Slope Engineering. Current Trends and Future Developments. Appendix: Manual for DDA Programs. Program DDA LINE (DL). Program DDA CUT (DC). Program DDA FORWARD (DF).
About the author
Yossef H. Hatzor
Summary
DDA is a numerical evolving method in rock mechanics practice. While the theory is covered in Shi’s book which was published in 1993, the verification, validation, and application of the method have not yet been presented in a concise form to professionals and students of rock mechanics and rock engineering. This book is intended to bridge the gap
