TY - JOUR
T1 - Modelling the influence of the fibre structure on the structural behaviour of flowable fibre-reinforced concrete
AU - Sarmiento, E. V.
AU - Hendriks, M. A N
AU - Geiker, M. R.
AU - Kanstad, T.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - This paper presents a modelling approach for fibre-reinforced concrete elements in which the fibre structure is taken into account in simulating the mechanical behaviour. The fibre structure is discretized in volumes and two fibre parameters are defined for each discrete volume: the dominant fibre orientation and the fibre volume fraction. These parameters are incorporated in a numerical model that uses a single-phase material definition dependent on the fibre parameters. The first part of this paper describes the methodology and constitutive modelling. The second part addresses the simulation of two beams that exhibited large differences in bending because of uneven fibre distribution. Data on the fibre structure was obtained using Computed Tomography scanning. The modelling approach captured the large difference in the flexural response of the two beams and provided an adequate prediction of the location and propagation of the critical cracks.
AB - This paper presents a modelling approach for fibre-reinforced concrete elements in which the fibre structure is taken into account in simulating the mechanical behaviour. The fibre structure is discretized in volumes and two fibre parameters are defined for each discrete volume: the dominant fibre orientation and the fibre volume fraction. These parameters are incorporated in a numerical model that uses a single-phase material definition dependent on the fibre parameters. The first part of this paper describes the methodology and constitutive modelling. The second part addresses the simulation of two beams that exhibited large differences in bending because of uneven fibre distribution. Data on the fibre structure was obtained using Computed Tomography scanning. The modelling approach captured the large difference in the flexural response of the two beams and provided an adequate prediction of the location and propagation of the critical cracks.
KW - Fibre orientation tensor
KW - Fibre reinforced concrete
KW - Fibre volume fraction
KW - Inhomogeneity of the fibre structure
KW - Nonlinear finite element modelling
UR - http://www.scopus.com/inward/record.url?scp=84975886162&partnerID=8YFLogxK
U2 - 10.1016/j.engstruct.2016.05.053
DO - 10.1016/j.engstruct.2016.05.053
M3 - Article
AN - SCOPUS:84975886162
SN - 0141-0296
VL - 124
SP - 186
EP - 195
JO - Engineering Structures
JF - Engineering Structures
ER -