경계형 모델을 사용한 초고강도 섬유보강 콘크리트거더의 파괴역학적 해석Fracture Simulation of UHPFRC Girder with the Interface Type Model
- Other Titles
- Fracture Simulation of UHPFRC Girder with the Interface Type Model
- Authors
- 궈이홍; 한상묵
- Issue Date
- 2010
- Publisher
- 한국전산구조공학회
- Keywords
- tensile hardening; UHPFRC; fracture simulation; LCP; 인장경화; 초고강도 섬유보강 콘크리트; 파괴역학; 선형 상보법; tensile hardening; UHPFRC; fracture simulation; LCP
- Citation
- 한국전산구조공학회논문집, v.23, no.1, pp 81 - 94
- Pages
- 14
- Journal Title
- 한국전산구조공학회논문집
- Volume
- 23
- Number
- 1
- Start Page
- 81
- End Page
- 94
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/23017
- ISSN
- 1229-3059
2287-2302
- Abstract
- This paper deals with the fracture simulation of UHPFRC girder with the interface type model. Based on the existing numerical simulation of quasi-brittle fracture in normal strength concrete, constitutive modeling for UHPFRC I-girder has been improved by including a tensile hardening at the failure surface. The finite element formulation is based on a triangular unit, constructed from constant strain triangles, with nodes along its sides and neither at the vertex nor the center of the unit. Fracture is simulated through a hardening/softening fracture constitutive law in tension, a softening fracture constitutive law in shear as well as in compression at the boundary nodes, with the material within the triangular unit remaining linear elastic. LCP is used to formulate the path-dependent hardening-softening behavior in non-holonomic rate form and a mathematical programming algorithm is employed to solve the LCP. The piece-wise linear inelastic yielding-failure/failure surface is modeled with two compressive caps, two Mohr-Coulomb failure surfaces, a tensile yielding surface and a tensile failure surface. The comparison between test results and numerical results indicates this method effectively simulates the deformation and failure of specimen.
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- Appears in
Collections - Department of Civil Engineering > 1. Journal Articles
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