Rate Dependent Behavior of Reinforced Concrete Using Irregular Lattice Model

P. H. Tsou, Y. J. Nam, S. H. Yoon, Y. M. Lim

Research output: Contribution to journalConference article

Abstract

In this study, a numerical approach using irregular lattice model is developed to simulate failure behavior of reinforcement concrete(RC) at high strain rates of loading. In the irregular lattice model, the material domain is discretized by the Delaunay/Voronoi dual tessellation with their lattice connectivity of spring sets. Generally, cementitious materials have rate dependency on their mechanical properties with different rates of loading. During the numerical analysis, in order to achieve this material characteristic, a rheological unit with a combination of springs and dashpots is introduced into the rigid-body-spring elements of the lattice model. The material response in every time step is obtained based on the time integration scheme. To model the reinforcement within the matrix, a semi-discrete typed approach is adopted into the lattice model, in which the stiffness of a reinforcement is transformed into a corresponding spring set of concrete element.

Original languageEnglish
Article number112008
JournalIOP Conference Series: Materials Science and Engineering
Volume431
Issue number11
DOIs
Publication statusPublished - 2018 Nov 15
Event14th International Conference on Concrete Engineering and Technology, CONCET 2018 - Kuala Lumpur, Malaysia
Duration: 2018 Aug 82018 Aug 9

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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