Finite element analysis of failure response behavior of anchor bolts in concrete

Abstract

Computational failure simulations of axi-symmetric pull-out tests are presented. At the material level, a fracture energy-based plasticity formulation for concrete, the Extended Leon Model, is considered. The failure mechanism is extensively analysed. The results indicate that the biaxial compression stress state of the concrete near the reaction ring is the main responsible for the ductile behavior observed in the last part of the deformation history of the pull-out test. On the other hand, the decisive influence of the concrete compression strength on the failure behavior and on the limit load is demonstrated. Beyond these important conclusions, the results demonstrate the predictive capabilities of the material model in the framework of finite element analyses.