Print Email Facebook Twitter A mesoscale modelling perspective of cracking process and fracture energy under high strain rate tension Title A mesoscale modelling perspective of cracking process and fracture energy under high strain rate tension Author Lu, Y. Xu, J. Weerheijm, J. Publication year 2013 Abstract 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. Subject Mechatronics, Mechanics & MaterialsEBP - Explosions, Ballistics & ProtectionTS - Technical SciencesDefence ResearchArchitecture and BuildingDefence, Safety and SecurityConcreteDynamic tensionFracture energyHigh strain rateMesoscale modelDynamic fracture processDynamic tensionExperimental observationHigh strain ratesMeso-scale modelsMesoscale modellingMesoscale simulationMesoscopic heterogeneityConcrete buildingsConcrete constructionCracksFracture energyStrain rateConcretes To reference this document use: http://resolver.tudelft.nl/uuid:e4da9247-c869-440d-a525-93a65de0773e TNO identifier 478203 ISBN 9788494100413 Source 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, 942-952 Bibliographical note Sponsors: INSTRON; ZWICK IBERICA Equipos de Ensayos S.L.; Tonitecnik; Sistemas de Ensayo de Materiales S.A. (SEM); RUMUL Document type conference paper Files To receive the publication files, please send an e-mail request to TNO Library.