Computers and Concrete

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Computational simulations of concrete behaviour under dynamic conditions using elasto-visco-plastic model with non-local softening

  • Marzec, Ireneusz (Faculty of Civil and Environmental Engineering, Gdansk University of Technology) ;
  • Tejchman, Jacek (Faculty of Civil and Environmental Engineering, Gdansk University of Technology) ;
  • Winnicki, Andrzej (Institute of Building Materials and Structures, Cracow University of Technology)
  • Received : 2014.07.21
  • Accepted : 2014.11.15
  • Published : 2015.04.25
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Abstract

The paper presents results of FE simulations of the strain-rate sensitive concrete behaviour under dynamic loading at the macroscopic level. To take the loading velocity effect into account, viscosity, stress modifications and inertial effects were included into a rate-independent elasto-plastic formulation. In addition, a decrease of the material stiffness was considered for a very high loading velocity to simulate fragmentation. In order to ensure the mesh-independence and to properly reproduce strain localization in the entire range of loading velocities, a constitutive formulation was enhanced by a characteristic length of micro-structure using a non-local theory. Numerical results were compared with corresponding laboratory tests and available analytical formulae.

Keywords

Acknowledgement

Grant : Innovative ways and effective methods of safety improvement and durability of buildings and transport infrastructure in the sustainable development

Supported by : European Union

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