Study on Calculation Method of Fracture Parameters of the Tubular Based on 3D VCCT

Qing Yuan Wang; Yong Jie Liu; Xiang Guo Zeng; Hua Yan Chen

doi:10.4028/www.scientific.net/KEM.385-387.713

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 385-387Study on Calculation Method of Fracture Parameters...

Study on Calculation Method of Fracture Parameters of the Tubular Based on 3D VCCT

Abstract:

The stress intensity factor (SIF) for tubular specimens were calculated based on virtual crack closure technique （VCCT）. The effects of geomet rical factors (inner radius, wall thickness and relative crack length) and external loads on the SIF were analyzed, respectively, by use of the single-variable approach. Finally, an approximate formula for SIF of compact-tensile tubular specimens was obtained as all factors mentioned were considered, which was presented as a reference for the tubular engineering design.

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Periodical:

Key Engineering Materials (Volumes 385-387)

Pages:

713-716

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.385-387.713

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Online since:

July 2008

Authors:

Qing Yuan Wang, Yong Jie Liu, Xiang Guo Zeng, Hua Yan Chen

Keywords:

3D VCCT, Finite Element Model (FEM), Fracture Parameter, Single-Variable, Tubular Specimen

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References

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[5] [10] [15] [20] [25] 3 5 7 9 11 13 T (mm) SIF (MPam1/2) FEM fitting curve (a） Fitting curve 4/3 114. 8185/KT .

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[10] [14] [18] [22] [26] [30] 9 13 17 21 25 R (mm) SIF (MPam1/2 ) FEM fitting curve （b）Fitting curve 2/3 127. 344/KR  Fig. 9 Curves of the fitting.

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