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A numerical method for simulating the stability of particle-packing structures is presented. The packing structures were modeled on the basis of face-centered cubic (fcc) and body-centered cubic (bcc) structures, and the stability of these structures was investigated using the distinct element method. The interaction between the particles was simplified by considering repulsive, adhesive, and damping forces, and the stability against the gravitational force was simulated. The results under a certain set of parameters showed characteristic deformation when the particles were arranged in an fcc array. Focusing on the local structure, the resulting model was divided into several domains: The bottom base, four top corners, and intermediate domains. The bottom base notably became a body-centered tetragonal (bct) structure, which corresponds to a uniaxially compressed bcc structure. Conversely, the models based on the bcc arrangement were structurally stable, as no specific deformation was observed, and a monotonously compressed bct structure was obtained. Consequently, the bcc arrangement is concluded to be more stable against uniaxial compression, such as the gravitational force, in a particle-packing system.
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篇名 Modeling and Simulation of Particle-Packing Structures and Their Stability Using the Distinct Element Method
来源期刊 建模与仿真(英文) 学科 数学
关键词 DISTINCT Element Method PARTICLE PACKING Structural STABILITY GEOMETRICAL SYMMETRY Computer Simulation
年,卷(期) jmyfzyw_2018,(4) 所属期刊栏目
研究方向 页码范围 59-70
页数 12页 分类号 O1
字数 语种
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DISTINCT
Element
Method
PARTICLE
PACKING
Structural
STABILITY
GEOMETRICAL
SYMMETRY
Computer
Simulation
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研究来源
研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
建模与仿真(英文)
季刊
2327-4018
武汉市江夏区汤逊湖北路38号光谷总部空间
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90
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0
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