Napredna pretraga

Pregled bibliografske jedinice broj: 1011688

Fiber-reinforced brittle material fracture models capable of capturing a complete set of failure modes including fiber pull- out


(HRZZ 9068) Rukavina, Tea; Ibrahimbegovic, Adnan; Kožar, Ivica
Fiber-reinforced brittle material fracture models capable of capturing a complete set of failure modes including fiber pull- out // Computer methods in applied mechanics and engineering, 355 (2019), 1; 157-192 doi:10.1016/j.cma.2019.05.054 (međunarodna recenzija, članak, znanstveni)


Naslov
Fiber-reinforced brittle material fracture models capable of capturing a complete set of failure modes including fiber pull- out

Autori
Rukavina, Tea ; Ibrahimbegovic, Adnan ; Kožar, Ivica

Kolaboracija
HRZZ 9068

Izvornik
Computer methods in applied mechanics and engineering (0045-7825) 355 (2019), 1; 157-192

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Short fiber-reinforced concrete (FRC)DamageEmbedded discontinuity finite element method (ED-FEM)Extended finite element method (X-FEM)Bond–slipFiber pull-out

Sažetak
In this work we propose a model that can take into account all the different failure mechanisms occurring in heterogeneous brittle composite materials such as fiber-reinforced concrete (FRC). The model kinematics is based on a judicious combination of the embedded-discontinuity finite element method (ED-FEM) and the extended finite element method (X- FEM) that can represent inelastic deformation and failure modes of three model constituents: concrete, short fibers, and the bond–slip between fiber and concrete. The general framework combining continuum damage and ED-FEM discrete approximation is used for modeling micro-cracks and macro-cracks in concrete. Fibers are taken to be linear elastic, and bond–slip is inelastic, computed along the fiber until complete pull-out, which is described by X-FEM discrete representation. The computations are performed with an incremental-iterative solution procedure and operator-split scheme that can control the fiber slip in each increment and thus easily handle softening response in fiber pull-out. The proposed model performance is illustrated through several numerical simulations. We include among them the simulation of three-point bending tests on notched specimens with fibers crossing the notch, which provide the validation of the proposed model against the experimental results.

Izvorni jezik
Engleski



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2013-11-9068 - Višeskalni model betona s identifikacijom parametara (Ivica Kožar, )

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Citati