Computers and Concrete

  • 제1권4호
  • /
  • Pages.433-455
  • /
  • 2004
  • /
  • 1598-8198(pISSN)
  • /
  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Numerical simulations of localization of deformation in quasi-brittle materials within non-local softening plasticity

  • Bobinski, J. (Civil Engineering Department, Gdansk University of Technology) ;
  • Tejchman, J. (Civil Engineering Department, Gdansk University of Technology)
  • 투고 : 2004.01.05
  • 심사 : 2004.11.10
  • 발행 : 2004.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

The paper presents results of FE-calculations on shear localizations in quasi-brittle materials during both an uniaxial plane strain compression and uniaxial plane strain extension. An elasto-plastic model with a linear Drucker-Prager type criterion using isotropic hardening and softening and non-associated flow rule was used. A non-local extension was applied in a softening regime to capture realistically shear localization and to obtain a well-posed boundary value problem. A characteristic length was incorporated via a weighting function. Attention was focused on the effect of mesh size, mesh alignment, non-local parameter and imperfections on the thickness and inclination of shear localization. Different methods to calculate plastic strain rates were carefully discussed.

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