| 三维颗粒生成算法 |
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| 引用本文： | 刘君,耿庆东.三维颗粒生成算法[J].大连理工大学学报,2011,51(2):236-243. |
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| 作者姓名： | 刘君 耿庆东 |
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| 作者单位： | 大连理工大学海岸和近海工程国家重点实验室; |
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| 基金项目： | Program of Innovation Group of Liaoning Province(Grant No.2009T017); “973” National High Technology Research and Development Program of China Project(Grant No.2010CB731502)~~ |
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| 摘 要： | 颗粒生成是进行散粒体细观数值模拟的前提.为快速生成指定级配的颗粒并减少自由堆积过程,针对三维球形及多面体颗粒生成,改进了颗粒生成的前进面算法.其基本思想是:随机选取3种粒径,生成3个相互接触的球,3个球的球心构成初始的2个前进面;随机选取前进面和一种粒径,在前进面的外侧生成斯的球,使新球与构成前进面的3个球相切;更新前...
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| 关 键 词： | 颗粒生成 前进面 离散元法(DEM) 非连续变形分析(DDA) 散粒体 |
Three-dimensional particles generation algorithm |
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| LIU Jun,GENG Qing-dong.Three-dimensional particles generation algorithm[J].Journal of Dalian University of Technology,2011,51(2):236-243. |
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| Authors: | LIU Jun GENG Qing-dong |
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| Institution: | LIU Jun*,GENG Qing-dong State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China |
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| Abstract: | Particles generation is the pre-step of discrete element simulation of practical problems.One advancing front face(AFF) algorithm for three-dimensional sphere/polyhedron particles packing is advanced.It can be used to constructively generate a random initial packing of spheres / polyhedrons with different radii within a 3D domain.Firstly,select three radii randomly and generate three spheres which contact with each other.The centroids of the initial three spheres form two advancing front faces.Then,select a... |
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| Keywords: | particles generation advancing front face discrete element method(DEM) discontinuous deformation analysis(DDA) granular material |
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