Calculation of the Stress Intensity Factors for Elliptical Cracks Embedded in a Weld under Tensile Loading II：Double Cracks

Xiao Yu Liu; Cai Fu Qian; Hui Fang Li; Hui Zheng

doi:10.4028/www.scientific.net/AMR.217-218.1425

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Calculation of the Stress Intensity Factors for Elliptical Cracks Embedded in a Weld under Tensile Loading II：Double Cracks

Abstract:

In this paper, double embedded elliptical cracks in a weld of pressure vessels under tension was taken into consideration, and stress intensity factors at the crack tip were calculated with the emphasis on the interaction between cracks. It is found that when the distance between the double embedded elliptical cracks is larger than the major semi-axis of the ellipse, influence between the cracks can be neglected. Unlike the single embedded crack, owing to the crack interactions, the point with maximum stress intensity factor is not always at the end of the minor axis of the ellipse, it may swift to the end of major axis, especially when the ellipse is close to a circle.

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Periodical:

Advanced Materials Research (Volumes 217-218)

Pages:

1425-1429

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.217-218.1425

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Online since:

March 2011

Authors:

Xiao Yu Liu, Cai Fu Qian, Hui Fang Li, Hui Zheng

Keywords:

Double Embedded Crack, Stress Intensity Factor (SIF), Weld

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References

[1] Yong-Jun Liu, Zhu-Feng Yue: Journal of Mechanical Strength Vol. 31(2009), p.986.

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[2] Xiangqiao Yan.: Applied Mathematical Modelling Vol. 34 (2010), p.2722.

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[3] Liu Xiaoyu, Qian Caifu, Li Huifang, Zheng Hui. Calculation of the stress intensity factors for elliptical cracks embedded in a weld under tensile loading I: single crack. Previous paper.

DOI: 10.4028/www.scientific.net/amr.217-218.1419

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