Fracture Process Zone of a Concrete Fracture Specimen

1989 ◽  
pp. 199-204 ◽  
Author(s):  
J. J. Du ◽  
A. S. Kobayashi ◽  
N. M. Hawkins
Keyword(s):  
Fracture Process ◽  
Fracture Process Zone ◽  
Process Zone ◽  
Concrete Fracture ◽  
Fracture Specimen

A Comparison of Cohesive Crack Model and Crack Band Model in Concrete Fracture

2012 ◽  
Vol 170-173 ◽  
pp. 3375-3380
Author(s):  
Liang Wu ◽  
Ze Li ◽  
Shang Huang
Keyword(s):  
Fracture Process ◽  
Fracture Process Zone ◽  
Process Zone ◽  
Crack Opening ◽  
Cohesive Crack ◽  
Band Model ◽  
Crack Model ◽  
Concrete Fracture ◽  
Cohesive Crack Model ◽  
Crack Band

The cohesive crack model and the crack band model are two convenient approaches in concrete fracture analysis. They can describe in full the fracture process by the different manner: The entire fracture process zone is lumped into the crack line and is characterized in the form of a stress-displacement law which exhibits softening; or the inelastic deformations in the fracture process zone are smeared over a band of a certain width, imagined to exist in front of the main crack. The correlation of the two models is developed based on a characteristic width of crack band. The analysis shows that they can yield about the same results if the crack opening displacement in the cohesive crack model is taken as the fracturing strain that is accumulated over the width of the crack band model. Some basic problems are also discussed in finite element analysis.

Concrete Fracture Process Zone Characterization with Fiber Optics

2001 ◽  
Vol 127 (5) ◽  
pp. 494-502 ◽  
Author(s):  
E. Denarié ◽  
V. E. Saouma ◽  
A. Iocco ◽  
D. Varelas
Keyword(s):  
Fiber Optics ◽  
Fracture Process ◽  
Fracture Process Zone ◽  
Process Zone ◽  
Concrete Fracture

Fracture Process Zone for Mode I Concrete Fracture

1991 ◽  
pp. 332-337 ◽  
Author(s):  
Z. K. Guo ◽  
A. S. Kobayashi ◽  
N. M. Hawkins
Keyword(s):  
Fracture Process ◽  
Fracture Process Zone ◽  
Process Zone ◽  
Mode I ◽  
Concrete Fracture

Further studies on fracture process zone for mode I concrete fracture

1993 ◽  
Vol 46 (6) ◽  
pp. 1041-1049 ◽  
Author(s):  
Zhi Kai Guo ◽  
Albert S. Kobayashi ◽  
Neil M. Hawkins
Keyword(s):  
Fracture Process ◽  
Fracture Process Zone ◽  
Process Zone ◽  
Mode I ◽  
Concrete Fracture

scholarly journals Mesoscale modelling of size effect on the evolution of fracture process zone in concrete

2021 ◽  
Vol 245 ◽  
pp. 107559 ◽  
Author(s):  
Rongxin Zhou ◽  
Yong Lu ◽  
Li-Ge Wang ◽  
Han-Mei Chen
Keyword(s):  
Size Effect ◽  
Fracture Process ◽  
Fracture Process Zone ◽  
Process Zone ◽  
Mesoscale Modelling

Analysis of Energy Balance When Using Cohesive Zone Models to Simulate Fracture Processes

2002 ◽  
Vol 124 (4) ◽  
pp. 440-450 ◽  
Author(s):  
C. Shet ◽  
N. Chandra
Keyword(s):  
Cohesive Energy ◽  
Cohesive Zone ◽  
Strain Energy ◽  
Fracture Process ◽  
Fracture Process Zone ◽  
Process Zone ◽  
Elastic Strain Energy ◽  
Inelastic Strain ◽  
External Work ◽  
Cohesive Zone Models

Cohesive Zone Models (CZMs) are being increasingly used to simulate fracture and fragmentation processes in metallic, polymeric, and ceramic materials and their composites. Instead of an infinitely sharp crack envisaged in fracture mechanics, CZM presupposes the presence of a fracture process zone where the energy is transferred from external work both in the forward and the wake regions of the propagating crack. In this paper, we examine how the external work flows as recoverable elastic strain energy, inelastic strain energy, and cohesive energy, the latter encompassing the work of fracture and other energy consuming mechanisms within the fracture process zone. It is clearly shown that the plastic energy in the material surrounding the crack is not accounted in the cohesive energy. Thus cohesive zone energy encompasses all the inelastic energy e.g., energy required for grainbridging, cavitation, internal sliding, surface energy but excludes any form of inelastic strain energy in the bounding material.

Sign in / Sign up

Export Citation Format

Share Document