Computers and Concrete

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Crack propagation simulation of concrete with the regular triangular lattice model

  • Jo, Byung-Wan (Department of Civil Engineering, Hanyang University) ;
  • Tae, Ghi-Ho (Department of Civil Engineering, Bucheon University) ;
  • Schlangen, Erik (Department of Civil Engineering, Delft University Technology) ;
  • Kim, Chang-Hyun (Department of Civil Engineering, Hanyang University)
  • Received : 2004.10.06
  • Accepted : 2005.03.28
  • Published : 2005.04.25
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Abstract

This paper discusses 2D lattice models of beams for simulating the fracture of brittle materials. A simulation of an experiment on a concrete beam subjected to bending, in which two overlapping cracks occur, is used to study the effect of individual beam characteristics and different arrangements of the beams in the overall lattice. It was found that any regular orientation of the beams influences the resulting crack patterns. Methods to implement a wide range of Poisson's ratios are also developed, and the use of the lattice to study arbitrary micro-structures is outlined. The crack patterns that are obtained with lattice are in good agreement with the experimental results. Also, numerical simulations of the tests were performed by means of a lattice model, and non-integer dimensions were measured on the predicted lattice damage patterns.

Keywords

References

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