Computers and Concrete

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A mesoscale model for concrete to simulate mechanical failure

  • Unger, Jorg F. (Institute of Structural Mechanics, Bauhaus University Weimar) ;
  • Eckardt, Stefan (Institute of Structural Mechanics, Bauhaus University Weimar) ;
  • Konke, Carsten (Institute of Structural Mechanics, Bauhaus University Weimar)
  • Received : 2009.02.16
  • Accepted : 2010.08.16
  • Published : 2011.08.25
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Abstract

In this paper, a mesoscale model of concrete is presented, which considers particles, matrix material and the interfacial transition zone (ITZ) as separate constituents. Particles are represented as ellipsoides, generated according to a prescribed grading curve and placed randomly into the specimen. In this context, an efficient separation procedure is used. The nonlinear behavior is simulated with a cohesive interface model for the ITZ and a combined damage/plasticity model for the matrix material. The mesoscale model is used to simulate a compression and a tensile test. Furthermore, the influence of the particle distribution on the loaddisplacement curve is investigated.

Keywords

References

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