FraMCoS 7 2010 Jeju, South Korea

The response of concrete structure under dynamic loadings: tools for seismic effects and impacts

The causes of the non linear behavior of concrete until failure are numerous and complex, pa ticularly for non monotonic and rapid loadings. We present here a model coupling damage and plasticity in- cluding several effects: development and closure of…

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Year 2010
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Abstract

The causes of the non linear behavior of concrete until failure are numerous and complex, pa ticularly for non monotonic and rapid loadings. We present here a model coupling damage and plasticity in- cluding several effects: development and closure of cracks, damping, compaction, strain rate effects, ... The idea being to describe with the same tool a wide variety of problems, the model is of explicit form, what makes possible its implementation into explicit numerical scheme well adapted to the treatment of fast dy- namic problems. In this context the F.E. “Abaqus explicit” code is used and the model has been successfully applied during the past few years to model a large range of complex reinforced concrete structures subjected to severe loadings. In this paper the main model concepts are presented and some examples of numerical simulations are given and compared to experimental data. The applications proposed in this paper are mainly related to seismic loading and to impact. The results show the relevance of the modeling used, which really allows making some real numerical experiments very useful for complex structures and extreme loadings.