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Issue:
Concrete Mesoscopic Model Based on Quadtree Mesh Refinement Technology
Author(s):
DING Shengyong
,
SHAO Guojian
,
LI Ang
,
LI Feng
Pages:
375
-
379
Year:
2015
Issue:
3
Journal:
Journal of Building Materials
Keyword:
concrete
;
mesoscopic model
;
quadtree structure
;
mesh refinement
;
Abstract:
在建立混凝土细观模型常用的背景网格法基础土,基于平衡四叉树网格加密技术对混凝土的界面过渡区进行局部网格加密,给出了更为合理的反映界面过渡区组分的混凝土细观模型,并探讨了网格加密的程序化实施方案.所给出的混凝土细观模型可直接对界面单元赋予相对应的材料参数,改善了背景网格法中界面过渡区网格的锯齿状缺陷,能够更准确地反映界面过渡区的几何形态和材料性质.最后,通过数值算例证明了所提方法的合理性和可行性.
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