Analysis of localized fracture in 3D reinforced concrete structures using volume averaging technique

详细信息    查看全文

• 作者：S. Moallemi ; S. Pietruszczak ; ^{pietrusz@mcmaster.ca}
• 关键词：Reinforced concrete ; 3D crack propagation ; Volume averaging scheme ; Crack smoothening algorithm ; Interface law
• 刊名：Finite Elements in Analysis and Design
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：125
• 期：Complete
• 页码：41-52
• 全文大小：2261 K
• 卷排序：125

文摘

A framework for modeling of localized damage in reinforced concrete structures is outlined. The mathematical formulation of the constitutive equations governing both the homogeneous and localized deformation is provided. An embedded discontinuity approach is used to describe the propagation of damage and a general 3D scheme for tracing the crack path is incorporated, which employs a smoothening algorithm. The described methodology is implemented in FEM code and a number of boundary value problems are solved that involve modeling of reinforced concrete structures in the presence of evolving discontinuities. The predictive abilities of the framework are examined for different intensities of reinforcement and the results are compared with the experimental evidence. It is clearly demonstrated that the outlined methodology, which is simpler in implementation as compared to XFEM, is quite adequate in capturing the propagation of macrocracks in reinforced concrete domains.