Comparison of two models of numerical simulation of low cycle fatigue of a plastic material with small grid inclusions

Temis, Joury, Azmetov, Khakim and Fleming, Bill (2013) Comparison of two models of numerical simulation of low cycle fatigue of a plastic material with small grid inclusions. Journal of Theoretical and Applied Mechanics, 51 (2). pp. 463-474. ISSN 1429-2955

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Abstract

Theory of Cells and a numerical FE method based on strain cyclic plasticity, damage model and technology of died elements were used for a prediction of the fatigue life of a metal matrix composite material. Results of calculations were compared with experimental fatigue data. It was shown that the predicted fatigue life of MMC using the method of cells was in close agreement with the experimental results for life outside of low cycle fatigue regime of 1000 cycles or less. The results obtained from the mathematical simulation procedure show that the failure occurs in several steps - the process of damage accumulation in the material and the process of crack growth. The results of prediction of time of the composite material full fracture are in good agreement with experimental data. The comparison shows that both the numerical method and the theory of cells can be used to predict fatigue life of MMC to within an acceptable degree of accuracy.

Item Type: Article
Uncontrolled Keywords: cyclic plasticity, damage accumulation model
Subjects: H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Ay Okpokam
Date Deposited: 21 Oct 2013 10:13
Last Modified: 26 Oct 2017 05:52
URI: http://nrl.northumbria.ac.uk/id/eprint/14136

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