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Rock Mechanics and Rock Engineering

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01.11.2013 | Original Paper

Kinetic Energy Dissipation and Convergence Criterion of Discontinuous Deformations Analysis (DDA) for Geotechnical Engineering

verfasst von: Qinghui Jiang, Yifeng Chen, Chuangbing Zhou, Man-chu Ronald Yeung

Erschienen in: Rock Mechanics and Rock Engineering | Ausgabe 6/2013

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Abstract

The discontinuous deformation analysis (DDA) is a numerical method for modeling discontinuous deformation behaviour of jointed rocks. In this paper, two basic problems are discussed related to kinetic energy dissipation and the convergence criterion for the DDA method when it is applied to geotechnical engineering. In view of the fact that the deformation and progressive failure can be treated as a quasi-static process with low kinetic energy dissipation rates, this paper introduces a viscous damping component to absorb discrete blocks’ kinetic energy, establishes the global equations of motion of the discrete block system that take damping effects into account, investigates the energy dissipation mechanism when solving a static or quasi-static problem, and defines the convergence criteria of displacement, kinetic energy and unbalanced force for DDA solutions when the system arrives at a stable state.

Vorheriger Artikel A Numerical Study on Wave Transmission Across Multiple Intersecting Joint Sets in Rock Masses with UDEC

Nächster Artikel Gouge Particle Evolution in a Rock Fracture Undergoing Shear: a Microscopic DEM Study

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Titel: Kinetic Energy Dissipation and Convergence Criterion of Discontinuous Deformations Analysis (DDA) for Geotechnical Engineering
verfasst von: Qinghui Jiang
Yifeng Chen
Chuangbing Zhou
Man-chu Ronald Yeung
Publikationsdatum: 01.11.2013
Verlag: Springer Vienna
Erschienen in: Rock Mechanics and Rock Engineering / Ausgabe 6/2013
Print ISSN: 0723-2632
Elektronische ISSN: 1434-453X
DOI: https://doi.org/10.1007/s00603-012-0356-5

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