Study on Strain Localization and Progressive Failure of Concrete

콘크리트의 변형률 국소화 및 진행성 파괴에 관한 연구

  • 송하원 (연세대학교 공과대학 토목공학과) ;
  • 김형운 (연세대학교 공과대학 토목공학과) ;
  • 우승민 (연세대학교 공과대학 토목공학과)
  • Published : 1999.06.01


The progressive failure following strain localization in concrete can be analyzed effectively using finite element modeling of fracture process zone of concrete with a finite element embedded discontinuity. In this study, a finite element with embedded discontinuous line is utilized for the analysis of progressive failure in concrete. The finite element with embedded discontinuity is a kind of discrete crack element, but the difficulties in discrete crack approach such as remeshing or adding new nodes along with crack growth can be avoided. Using a discontinuous shape function for this element, the displacement discontinuity is embedded within an element and its constitutive equation is modeled from the modeling of fracture process zone. The element stiffness matrix is derived and its dual mapping technique for numerical integration is employed. Then, a finite element analysis program with employed algorithms is developed and failure analysis results using developed finite element program are verified through the comparison with experimental data and other analysis results.


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