Comparative Study of Smeared Cracking Models for Concrete Structures
DOI:
https://doi.org/10.5433/1679-0375.2013v34n2p211Keywords:
Concrete Structures, Finite Element Method, Constitutive ModelsAbstract
The article shows how the constitutive modeling of concrete has evolved since the initial attempts to characterize the medium cracked as continuous, moving from smeared cracking, damage and microplane models, until the current tendency to design different models according to a single theoretical framework. A generic formulation for smeared cracking models, including fixed and rotational models, as well as degradation in tension and in compression, is provided. Using this formulation, three models are generated by specifying the laws of degradation. A comparative study of models, based on computer simulations of a beam subjected to shear at four points, is presented. The results are compared, between themselves and with experimental results, providing a critical analysis of the models.
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