Computers and Concrete

  • 제15권5호
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  • Pages.709-733
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  • 2015
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A damage model formulation: unilateral effect and RC structures analysis

  • Pituba, Jose J.C. (Department of Civil Engineering, Campus Catalao, Federal University of Goias)
  • 투고 : 2014.04.19
  • 심사 : 2014.11.30
  • 발행 : 2015.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

This work deals with a damage model formulation taking into account the unilateral effect of the mechanical behaviour of brittle materials such as concrete. The material is assumed as an initial elastic isotropic medium presenting anisotropy, permanent strains and bimodularity induced by damage evolution. Two damage tensors governing the stiffness in tension or compression regimes are introduced. A new damage tensor in tension regimes is proposed in order to model the diffuse damage originated in prevails compression regimes. Accordingly with micromechanical theory, the constitutive model is validate when dealing with unilateral effect of brittle materials, Finally, the proposed model is applied in the analyses of reinforced concrete framed structures submitted to reversal loading. The numerical results have shown the good performance of the modelling and its potentialities to simulate practical problems in structural engineering.

키워드

과제정보

연구 과제 주관 기관 : CNPq (National Council for Scientific and Technological Development)

참고문헌

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