Advanced constitutive models implemented in the finite element system ATENA serve as rational tools to explain the behavior of connection between steel and concrete. Three nonlinear material models available in ATENA are described: crack band model based on fracture energy, fracture-plastic model with non-associated plasticity and microplane material model. Nonlinear simulation using these advanced constitutive models can be efficiently used to support and extend experimental investigations and to predict behavior of structures and structural details.
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