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 & Materials
EBP - Explosions, Ballistics & Protection
TS - Technical Sciences
Defence Research
Architecture and Building
Defence, Safety and Security
Concrete
Dynamic tension
Fracture energy
High strain rate
Mesoscale model
Dynamic fracture process
Dynamic tension
Experimental observation
High strain rates
Meso-scale models
Mesoscale modelling
Mesoscale simulation
Mesoscopic heterogeneity
Concrete buildings
Concrete construction
Cracks
Fracture energy
Strain rate
Concretes
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