한국콘크리트학회:학술대회논문집 (Proceedings of the Korea Concrete Institute Conference)
- 한국콘크리트학회 2004년도 춘계 학술발표회 제16권1호
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- Pages.462-465
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- 2004
A Study on Mesh Sensitivity of 3-D Homoginized Crack Model for Concrete Fracture Analysis
- Nam Jin Won (School of Civil and Environmental Eng., Yonsei University) ;
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Song Ha Won
(School of Civil and Environmental Eng., Yonsei University) ;
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Byun Keun Joo
(School of Civil and Environmental Eng., Yonsei University) ;
- Bang Choon Suk (Korea Railroad Research Institute)
- 발행 : 2004.05.01
초록
Since quasi-brittle materials like concrete show strain localization behavior accompanied by strain softening, a numerical drawback such as mesh sensitivity is appeared in the finite element analysis. In this paper, the so-called homogenized crack model which was introduced for three dimensional finite element analysis of fracture in concrete is studied for the mesh size dependence problem in fracture analysis. A homogenized crack element having a velocity discontinuity. is averaged to remove the mesh sensitivity in finite element analysis of concrete fracture. Numerical examples show that softening behavior of concrete fracture is successfully predicted without mesh sensitivity using the homogenized crack model.
키워드