| 远方,刁可.非均匀脆性材料数值试验CA计算模型[J].计算力学学报,2010,27(2):375~378 |
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| 非均匀脆性材料数值试验CA计算模型 |
| CA simulation model for numerical test of heterogeneous brittle material |
| 投稿时间：2008-10-16 |
| DOI：10.7511/jslx20102033 |
| 中文关键词: 多重随机等效空间桁架模型 数值仿真试验 非均匀脆性材料 自动元胞机 |
| 英文关键词:multiple random equivalent space truss model numerical test heterogeneous brittle material cellular automata |
| 基金项目:国家自然科学基金(50279047);浙江省自然科学基金(Y104413)资助项目. |
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| 中文摘要: |
| 以自动元胞机CA(Cellular Automata)理论为基础,提出了一种CA计算模型,模拟混凝土、岩石等非均匀脆性材料的开裂过程,研究分析材料的变形性质和力学性能。文中给出了空间随机杆件方向余弦常量,推导了等效杆件截面面积计算公式,并通过数值试验证明了方法的有效性。 |
| 英文摘要: |
| Based on cellular automata (CA) theory, a CA simulation model named multiple random equivalent space truss model (MRETM-3D) is developed for simulation of fracture process of heterogeneous brittle material, such as concrete, geological materials and etc. The factors of direction cosine of equivalent truss member are given and the formula to determine the cross-sectional areas of the truss members is presented in the paper. Two examples of numerical test are carried out allowing completely diverse views of concrete modeling. |
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