TITLE:
Mesoscale Modeling of Hooked-End Steel Fiber Reinforced Concrete under Uniaxial Compression Using Cohesive Elements
AUTHORS:
Junjie Feng, Guansheng Yin, Zhu Liu, Jianhong Liang, Yunjie Zhang, Congge Wen
KEYWORDS:
Fiber Reinforced Concrete, Uniaxial Compression, Cohesive Zone Model, Failure Mode, Stress-Strain Curve
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.9 No.11,
November
23,
2021
ABSTRACT: Based on the cohesive zone model, the 2D mesostructures were developed for numerical studies of multi-phase hooked-end steel fiber reinforced concrete under uniaxial compression. The zero-thickness cohesive interface elements were inserted within the mortar, on interfaces of mortar and aggregates and interfaces of mortar and fibers to simulate the failure process of fiber reinforced concrete. The results showed that the numerical results matched well the experimental results in both failure modes and stress-strain behavior. Hooked-end steel fiber reinforced concrete exhibited ductile failure and maintained integrity during a whole failure process. Compared with normal concrete, HES fiber reinforced concrete was greater stiffness and compressive strength; the descending branch of the stress-strain curve was significantly flatter; the residual stress was higher.