What is it about?
The focus of this research was on determining the cracking behavior when parameter such as the biaxiality ratio was varied. The crack propagation under mixed-mode loading was simulated by means of finite element method. The stress intensity factors have been calculated by the linear elastic fracture mechanics approach using fracture analysis code-2D (Franc2D). The crack growth under opening mode-I was considered because the crack growth occurs mainly along the direction where the mode-I stress component becomes the maximum. The numerical integration of Paris’ equation was carried out. The effect of normal and transverse applied load (σ x, and σ y, respectively) on crack propagation was presented. It was found that the fatigue crack growth was faster at a smaller biaxial stress ratio (λ), i.e., higher σ y on the horizontal crack plan. Moreover, fatigue strength values decrease as λ decreases. The results confirm the use of fracture mechanics approach in biaxial fracture.
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Why is it important?
The using of Franc2D to simulate biaxial conditions. Hence, stress intensity factor was calculated for the first time using a 2D FE code Franc2D.
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This page is a summary of: Mixed-Mode Crack Propagation in Cruciform Joint using Franc2D, Journal of Failure Analysis and Prevention, April 2016, Springer Science + Business Media, DOI: 10.1007/s11668-016-0094-1.
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