Abstract
Based on the post-peak cyclic tensile behaviour of concrete, a model for the fatigue behaviour of this material is proposed. In order to verify the model, crack opening and closure of a discrete crack under cyclic loading is studied by computer simulation. Input for the model is an appropriate description for alternating stresses in the post-peak tensile region. Results of deformation-controlled uniaxial tensile tests have been used to develop a new model, which consists of continuous functions. This constitutive model was implemented in the FE-code DIANA. It is shown by numerical analysis of a beam under four-point bending, how a crack or softening zone propagates under repeated loading. The fatigue life of this beam for cyclic loading between load-levels 0 and 95 % of its maximum load bearing capacity, is predicted. The results of this preliminary analysis are promising and show good agreement with results that can usually be found in fatigue experiments.
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© 1991 Springer Science+Business Media Dordrecht
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Hordijk, D.A., Reinhardt, H.W. (1991). Growth of Discrete Cracks in Concrete under Fatigue Loading. In: Shah, S.P. (eds) Toughening Mechanisms in Quasi-Brittle Materials. NATO ASI Series, vol 195. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3388-3_33
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DOI: https://doi.org/10.1007/978-94-011-3388-3_33
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