Print Email Facebook Twitter A mesoscale modelling perspective of cracking process and fracture energy under high strain rate in tension Title A mesoscale modelling perspective of cracking process and fracture energy under high strain rate in tension Author Weerheijm, J. Lu, Y. Xu, J. Faculty Civil Engineering and Geosciences Department Structural Engineering Date 2013-03-10 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 millimetreresolution 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 concretedynamic tensionhigh strain ratefracture energymesoscale model To reference this document use: http://resolver.tudelft.nl/uuid:474d8991-7e57-49e9-80aa-a71066cb884a Publisher Cimne ISBN 978-84-941004-0-6 Source FraMCos-8: Proceedings of the 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, Toledo, Spain, 10-14 March 2013 Part of collection Institutional Repository Document type conference paper Rights (c) 2013 The Authors Files PDF Lu.pdf 2.33 MB Close viewer /islandora/object/uuid:474d8991-7e57-49e9-80aa-a71066cb884a/datastream/OBJ/view