Abstract
This paper reports the study of stress intensity factors (SIF) of three edge cracks in a finite plate under bending moments. The goal of this paper was to analyze the three edge crack interactions under such loading. Several studies can be found in literature discussing on mode I SIF. However, most of these studies obtained the SIFs using tensile force. Lack of SIF reported discussing on the SIFs obtained under bending moments. ANSYS finite element program was used to develop the finite element model where singular elements were used to model the cracks. Different crack geometries and parameters were utilized in order to characterize the SIFs. According to the present results, crack geometries played a significant role in determining the SIFs and consequently induced the crack interaction mechanisms.
Highlights
Parallel edge cracks are one of the most common flaws especially in industrial failures (Daud et al, 2011)
It is showed that the stress intensity factor (SIF) increased when the cracks become deeper
It is found that the effects of crack eccentricities are played an important role in increasing the SIFs
Summary
Parallel edge cracks are one of the most common flaws especially in industrial failures (Daud et al, 2011). This paper discusses three parallel cracks in a sheet with finite width where the sheets are subjected to the bending moment. According to the literature survey (Ismail et al, 2012), most of the work conducted to analyze the crack with the assumption that only a single crack can be used to represent such problems. In many cases the multiple cracks can be carried out and must be studied to increase the safety factor of the component structure (Lam and Phua, 1991). This paper discusses three parallel cracks in a sheet with finite width. This sheet is subjected to bending moment in the longitudinal direction remote from the cracks.
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