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Three-Dimensional Study of Fatigue Crack Growth in a Rotating Disc

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  • Eskandari Hadi

    (Abadan Institute of Technology, Petroleum University of Technology,Abadan, Iran)

  • Nami Mohammad Rahim

    (School of Mechanical Engineering, Dept. of Solid Mechanics, Shiraz University, Shiraz, Iran)

Abstract

The problem of fatigue-crack-growth in a rotating disc at different crack orientation angles is studied by using an automated numerical technique, which calculates the stress intensity factors on the crack front through the three-dimensional finite element method. Paris law is used to develop the fatigue shape of initially semi-elliptical surface crack. Because of needs for the higher mesh density and accuracy near the crack, the sub-modeling technique is used in the analysis. The distribution of SIF’s along the crack front at each step of growth is studied and the effect of crack orientation on the rate of crack-growth is investigated. The calculated SIF’s are reasonable and could be used to predict the probable crack growth rates in fracture mechanics analysis and can help engineers to consider in their designing and to prevent any unwanted failure of such components.

Suggested Citation

  • Eskandari Hadi & Nami Mohammad Rahim, 2013. "Three-Dimensional Study of Fatigue Crack Growth in a Rotating Disc," International Journal of Manufacturing, Materials, and Mechanical Engineering (IJMMME), IGI Global, vol. 3(2), pages 45-62, April.
    • Handle: RePEc:igg:jmmme0:v:3:y:2013:i:2:p:45-62
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