A mesoscale modelling perspective of cracking process and fracture energy under high strain rate tension
conference paper
This paper presents a numerical modelling study on the simulation of the cracking process and fracture energy in concrete under high strain rate. To capture the stress wave effect and the damage evolution at the meso-length scale, both a homogeneous model with a millimetre-resolution mesh and an explicit heterogeneous mesoscale model with random polygon aggregates are employed. The tendency of development of a) discrete multiple cracks, and b) spread tensile damage across adjacent element layers, in the high strain rate tension regime is scrutinised. This phenomenon generally gives rise to an increase in the dynamic fracture energy, which is consistent with experimental observations. Relative comparison between the homogeneous and heterogeneous mesoscale simulations suggests a sensible effect of the mesoscopic heterogeneity in the dynamic fracture process.
Topics
ConcreteDynamic tensionFracture energyHigh strain rateMesoscale modelDynamic fracture processDynamic tensionExperimental observationHigh strain ratesMeso-scale modelsMesoscale modellingMesoscale simulationMesoscopic heterogeneityConcrete buildingsConcrete constructionCracksFracture energyStrain rateConcretes
TNO Identifier
478203
ISBN
9788494100413
Source title
8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS-8 2013, Toledo, Spain, 11-14 March 2013 / Edited by J.G.M. Van Mier, G. Ruiz, C. Andrade, R.C. Yu and X.X. Zhang
Pages
942-952
Files
To receive the publication files, please send an e-mail request to TNO Repository.