混凝土材料裂纹尖端损伤带尺寸特性<sup>*</sup>

混凝土材料裂纹尖端损伤带尺寸特性^*

基金项目: * 国家教委留学回国人员科研基金

Shanghai Institute of Applied Mathematics & Mechanics, Shanghai University, Shanghai 200072, P.R. China

摘要: 本文采用作者研究各向异性材料裂纹尖端塑性区特性的分析方法,研究了混凝土材料裂纹尖端损伤带尺寸特性.基于单轴应力假定,考虑了混凝土材料的非线性软化特性等影响,提出用两种分析模型:即能量模型和断裂模型来分别讨论.最后,还对这些模型作了比较.
- 混凝土材料 /
- 裂纹尖端 /
- 损伤带 /
- 非线性软化特性
Abstract: This paper presents a comprehensive derivation of fracture process zone size which closely parallels similar work in fracture of metals and anisotropic solids but is adapted to conrete. Some nonlinear mechanics models of concrete materials will be discussed by using uniaxial stress assumptions. For uniaxial stress assumption, energy model and fracture model will be presented for nonlinear softening models. Finally, a comparison of those models is provided.
- concrete /
- crack tip /
- damage zone /
- nonlinear softening model

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