Abstract
The material ahead of the crack tip is modelled as an assemblage of uniaxial fatigue elements [1]. It is the behaviour of these material elements which predicts the crack propagation rate for any given configuration. Fatigue damage leads to failure when the total amount of damage reaches a critical value. Each fatigue element is subjected to increasing levels of stress-strain fields as the crack tip moves towards it. The linear damage accumulation rule proposed by Miner [2] is used to evaluate the failure under this variable loading condition. The failure of an element indicates a crack initiation at the material position it occupies, and this sequence of initiations is perceived as stable crack growth on the macroscopic scale. The damage region considered is the cyclic plastic zone ahead of the crack tip.
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© 1984 Martinus Nijhoff Publishers, Dordrecht
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Ellyin, F., Fakinlede, C.O.A. (1984). Crack Tip Growth Rate Model for Cyclic Loading. In: Pindera, J.T., Krasnowski, B.R. (eds) Modelling Problems in Crack Tip Mechanics. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6198-2_14
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DOI: https://doi.org/10.1007/978-94-009-6198-2_14
Publisher Name: Springer, Dordrecht
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