文章基本信息

标题：DISCRETE LATTICE ELEMENT APPROACH FOR ROCK FAILURE MODELING
其他标题：DISKRETNI PRISTUP ZA MODELIRANJE SLOMA U STIJENI
本地全文：下载
作者：Mijo Nikolić ; Mijo Nikolić ; Adnan Ibrahimbegovic 等
期刊名称：e-GFOS
电子版ISSN：1847-8948
出版年度：2017
卷号：14
页码：1-7
DOI：10.13167/2017.14.1
语种：English
出版社：Faculty of Civil Engineering Osijek
摘要：This paper presents the ‘discrete lattice model’, or, simply, the ‘lattice model’, developed for rock failure modeling. The main difficulties in numerical modeling, namely, those related to complex crack initiations and multiple crack propagations, their coalescence under the influence of natural disorder, and heterogeneities, are overcome using the approach presented in this paper. The lattice model is constructed as an assembly of Timoshenko beams, representing the cohesive links between the grains of the material, which are described by Voronoi polygons. The kinematics of the Timoshenko beams are enhanced by the embedded strong discontinuities in their axial and transversal directions so as to provide failure modes I, II, and III. The model presented is suitable for meso-scale rock simulations. The representative numerical simulations, in both 2D and 3D settings, are provided in order to illustrate the model’s capabilities.
其他摘要：U ovome radu predstavljen je diskretni rešetkasti model razvijen za simuliranje sloma u stijeni. Poteškoće koje se javljaju u numeričkim modelima kontinuuma, kao što su inicijacija pukotine, propagacija više pukotina, njihovo srastanje i utjecaj heterogen
关键词：discrete model;lattice model;embedded strong discontinuity
其他关键词：diskretni model;rešetkasti model;jaki diskontinuitiet