Abstract
The Cohesive Crack Model (CCM) is the most commonly accepted discrete crack
approach for modelling concrete based materials. It is applied to Ultra High
Performance Fibre Reinforced Concrete (UHPFRC) in this study because it can be
easily represented as cohesive interface elements (CIE) in finite element modelling
(FEM). CCM using a bilinear traction-separation relationship is used to simulate the
load-deflection behaviour of UHPFRC test specimens. CCM based numerical
simulation of three-point bend specimens are implemented using cohesive elements
in ABAQUS FE software. Progressive crack propagation and failure mechanism of
UHPFRC test specimens are simulated in order to predict their load capacities.
Comparison of the simulation to existing experimental test results indicates that CCM
with a bilinear traction-separation curve can provide predictions of both the loaddeflection
curves and peak load of 100 and 150mm deep UHPFRC test specimens to
=/- 6 % of the average for 50 and 100mm wide beams and to =/+20% for 150mm
wide beams. Model predictions of the peak load for the 50mm wide and 50mm deep
beams were to =/-25% of the average.
| Original language | English |
|---|---|
| Pages (from-to) | 502-508 |
| Journal | Advances in Applied Ceramics |
| Volume | 113 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Nov 2014 |