Anisotropic Damage Mechanics Modeling of Concrete under Biaxial Fatigue Loading

DOI: 10.4236/ojce.2015.51002   PDF   HTML   XML   3,121 Downloads   3,820 Views   Citations


An anisotropic damage mechanics model is presented to describe the behavior and failure of concrete under biaxial fatigue loading. Utilizing the approach of bounding surfaces, the limit surface becomes a special case when the number of loading cycles is set to one. By increasing the number of loading cycles, the strength of concrete gradually decreases and the limit surface is allowed to contract and form new curves representing residual strengths. The magnitude of loading, load range, and the load path are known to influence the fatigue life and hence are addressed in this formulation. In this paper, a strength softening function is proposed in order to address the reduction in the strength of concrete due to fatigue. Separate softening functions are also proposed to account for the deformation characteristics in concrete under cyclic loading. Numerical simulations predicted by the model in both uniaxial and biaxial stress paths show a good correlation with the experimental data available in the literature.

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Saboori, A. , Yazdani, S. and Tolliver, D. (2015) Anisotropic Damage Mechanics Modeling of Concrete under Biaxial Fatigue Loading. Open Journal of Civil Engineering, 5, 8-16. doi: 10.4236/ojce.2015.51002.

Conflicts of Interest

The authors declare no conflicts of interest.


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