Numerical analysis of stress intensity factor and T-stress in pipeline of steel P264GH submitted to loading conditions

被引：6

作者：

Moustabchir, Hassane ^{[1
]}

Arbaoui, Jamal ^{[2
]}

Zitouni, Azari ^{[3
]}

Hariri, Said ^{[4
]}

Dmytrakh, Ihor ^{[5
]}

机构：

[1] Équipe Science et Ingénierie des Matériaux (ESIM), Département de Physique, Université My Ismaïl, Errachidia

[2] ENSTA Bretagne, LBMS, DFMS, Brest Cedex

[3] LaBPS, Université Paul Verlaine Metz, Ecole Nationale D'Ingénieurs de Metz, Metz

[4] TPCIM, Ecole des Mines de Douai, Douai Cedex

[5] Karpenko Physico-Mechanical Institute, National Academy of Sciences of Ukraine, Lviv

来源：

Journal of Theoretical and Applied Mechanics (Poland) | 2015年 / 53卷 / 03期

关键词：

Finite Element Method (FEM); Stress Difference Method (SDM); Stress Intensity Factor (SIF); T-stress; Volumetric method;

D O I：

10.15632/jtam-pl.53.3.665

中图分类号：

学科分类号：

摘要：

Stress singularities occur at crack tips, corners and material interfaces. The stress intensity factors and T-stresses are coefficients of structural components where the active stress singular and first regular stress terms, respectively, are denoted by William's eigen function expansion series. A finite element analysis by CASTEM 2000 have been undertaken in order to determine the evolution of the T-stress and stress intensity factor terms in mode I for an arc of pipeline specimens with an external surface crack. A stress difference method described by Moustabchir et al. (2012) are adapted and, in the following step, the volumetric method is then embedded to compute the SIFs and T-stress near the crack tip. Different crack geometries combined with different length-to-thickness ratios are examined for the T-stress and stress-intensity factor. The revisited stress difference method employed here shows to be an accurate and robust scheme for evaluating the T-stress/SIFs in an arc of the pipeline.

引用

页码：665 / 672

页数：7

共 16 条

[1]

Ayatollah M.R., Pavier M.J., Smith D.J., Determination of T-stress from finite element analysis for mode i and mixed mode I/II loading, International Journal of Fracture, 91, pp. 283-298, (1998)

[2]

CASTEM, (2000)

[3]

Du Z.-Z., Hancock J.W., The effect of non-singular stresses on crack-tip constraint, Journal of the Mechanics and Physics of Solids, 39, pp. 555-567, (1991)

[4]

Fett T., A Green's function for T-stresses in an edge cracked rectangular plate, Engineering Fracture Mechanics, 57, pp. 365-373, (1997)

[5]

Hadj Meliani M., Azari Z., Pluvinage G., Matvienko Yu.G., The effective T-stress estimation and crack paths emanating from U-notches, Engineering Fracture Mechanics, 77, pp. 1682-1692, (2010)

[6]

Jayadevan K.R., Thaulow C., Ostby E., Berg B., Skallerud B., Holthe K., Nyhus B., Structural integrity of pipelines: T-stress by line-spring, Fatigue and Fracture of Engineering Materials and Structures, 28, pp. 467-488, (2005)

[7]

Kim J.-H., Paulino G.H., T-stress, mixed-mode stress intensity factors, and crack initiation angles in functionally graded materials: A unified approach using the interaction integral method, Computer Methods in Applied Mechanics and Engineering, 192, pp. 1463-1494, (2003)

[8]

Lu K., Meshii T., Three-dimensional T-stresses for three-point-bend specimens with large thickness variation, Engineering Fracture Mechanics, 116, pp. 197-203, (2014)

[9]

Mostafavi M., Smith D.J., Pavier M.J., Reduction of measured toughness due to out-of-plane constraint in ductile fracture of aluminium alloy specimens, Fatigue and Fracture of Engineering Materials and Structures, 33, pp. 724-739, (2010)

[10]

Moustabchir H., Azari Z., Hariri S., Dmytrakh I., Three-dimensional t-stress to predict the directional stability of crack propagation in a pipeline with external surface crack, Key Engineering Materials, 498, pp. 31-41, (2012)

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