Simulation of inelastic damage in reinforced concrete structures using adaptive methods

A finite element procedure for geometrically and materially nonlinear damage analysis of reinforced concrete shells is presented. On material point level a layered model is introduced, The concrete model employed includes elsato-plastic behaviour with damage evolution description beyond cracking point. A smeared approach for the modelling of the rebars includes linear isotropic hardening beyond yield point. The finite rotation shell theory furnishes tile background for the formulation of a powerful isoparametric assumed-strain finite element. The quality of the obtained damage prediction is controlled by a Babuska/Rheinboldt residual error indicator, Based on this error measure an adaptive mesh refinement technique and appropriate transfer algorithms for the history dependent state variables are developed.