In this work, the effects of detonation loadings on concrete based structures are analysed. For accurate modelling, appropriate and reliable material models for reinforced concrete and fibre reinforced concrete are required for the numerical simulations which should complement and/or substitute experiments. These material models must have the ability to characterise the effects of wave propagations in heterogeneous materials. The material models for steel fibre reinforced concrete and reinforced concrete bond have been developed and implemented in a hydrocode. Due to the classical theory of thermodynamics, material laws are additively disparted into a hydrostatic component and a deviatoric component. In doing so, the material dependent constitutive equations are splitted in an equation of state for the compressive material behaviour, and, a strength model for the deviatoric material behaviour. The constitutive equations are affiliated on the basis of a fully three dimensional continuum based elastic-plastic damage theory. The new constitute equations are modularly formulated and consider the effects of strength increase due to strain-rates, a damage evolution due to material plasticising, and, consequentially a degradation of stiffness and strength. Additionally, the material parameters of the reinforcing steel according to the German code regulations DIN 488 have been evaluated and implemented in a known material law of metals.
«In this work, the effects of detonation loadings on concrete based structures are analysed. For accurate modelling, appropriate and reliable material models for reinforced concrete and fibre reinforced concrete are required for the numerical simulations which should complement and/or substitute experiments. These material models must have the ability to characterise the effects of wave propagations in heterogeneous materials. The material models for steel fibre reinforced concrete and reinforced...
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