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Title: Mesoscale modeling of concrete under dynamic split tension
Authors: Zhou, XQ
Xia, Y 
Keywords: Concrete
Interfacial transition zone (ITZ)
Mesoscale model
Split tension
Issue Date: 2013
Source: Journal of earthquake and tsunami, 2013, v. 7, no. 3, 1350028 How to cite?
Journal: Journal of Earthquake and Tsunami 
Abstract: In this paper, a mesoscale model is adopted to simulate concrete behavior under dynamic split tension. The concrete material is assumed to comprise coarse aggregates, mortar matrix, and an interfacial transition zone (ITZ). In the mesh generation process, random coarse aggregate particles are generated from a certain aggregate size distribution and then placed into the mortar matrix with ITZ between the coarse aggregate edge and the mortar matrix. Different aggregate shapes, such as circular, oval, and polygons are modeled to analyze the gravel and crushed stone aggregates. Numerical simulation is used to model the dynamic damage responses of a typical cylinder concrete specimen and a cube specimen under split tension. Velocity boundary is added as the dynamic loading. Reasonable tensile stress-strain relationships are obtained at the macroscale level; and the detailed stress wave distribution and the crack pattern are obtained at the mesoscale level. These numerical results agree well with conventional experimental results. It also shows that cracks are affected by aggregate distribution.
ISSN: 1793-4311
DOI: 10.1142/S1793431113500280
Rights: Electronic version of an article published as Journal of Earthquake and Tsunami, 7(03), 1350028), DOI: 10.1142/S1793431113500280 © World Scientific Publishing Company 2013
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