The mesh density effect on stress intensity factor calculation using ABAQUS XFEM

Kim, Ji Su; Lee, Hyun Jae; Kim, Yun Jae; Kim, Yong Beum

doi:10.1007/s12206-019-0931-8

Cited by 9 publications

(4 citation statements)

References 10 publications

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“…Note that the edges of cracks are designed to be located within the elements to avoid nonconvergence 50 . The approximate enrichment radius around the crack tip is twice the element size, that is, 1 mm, as suggested by Kim et al 51 Figure 5E shows the morphology of C2 ‐ Base in XFEM and the position of channel B3, which happens to be located at the mid‐point of the simplified profile of C2 ‐ Base .…”

Section: Resultsmentioning

confidence: 99%

Full‐scale testing of near‐neutral pH stress corrosion cracking growth behavior of a vintage X52 oil pipe

Sun,

Yan,

Bibby

et al. 2024

Fatigue Fract Eng Mat Struct

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This study presents an experimental investigation conducted on a 40‐year‐old vintage X52 oil pipe segment to assess the growth behavior of near‐neutral pH stress corrosion cracking (SCC). Six cracks were introduced on the pipe specimen, each of which was associated with a unique combination of metallurgical and environmental condition. SCC growth was evident in two base metal cracks respectively exposed to C2 and NS4. Stress intensity factors at the two cracks were evaluated using extended finite element method. Near‐neutral pH environment effects were observed to have a more pronounced effect on the stress intensity factor threshold for growth than on the growth rate. Higher stress levels and aging likely contribute to the difference in growth rates of different cracks. Electrochemical analysis suggests the corrosion‐crack propagation interplay, with a faster corrosion in the NS4 solution than that in the C2 solution consistent with the observed slower crack growth in NS4.

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Section: Resultsmentioning

confidence: 99%

Full‐scale testing of near‐neutral pH stress corrosion cracking growth behavior of a vintage X52 oil pipe

Sun,

Yan,

Bibby

et al. 2024

Fatigue Fract Eng Mat Struct

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“…To simulate crack extension in Abaqus [23] using XFEM, damage sprouting and evolution [24] were considered. In this study, the maximum principal stress criterion [25] was used for damage sprouting.…”

Section: H(mentioning

confidence: 99%

Multi-Scale Model Crack Extension Study Based on XFEM

Liu¹,

Chen²

2023

Preprint

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The link of fracture analysis of large ships is an essential part of the structural safety of ships. However, the finite element analysis of large structure according to the traditional method not only has high requirements on the computer, but also the influence of the mesh encryption at special locations makes further requirements on the accuracy of the ship. In this paper, based on the extended finite element method (XFEM) and the multi-point constraint method (MPC), the dynamic crack expansion process of the rectangular plate containing cracks under the multi-scale model is comparatively studied by using ABAQUS simulation software Finally, the applicability of the method is verified by applying the multi-scale model of ship nodes. The results show that the computational effort of the multi-scale model is significantly reduced with the same accuracy and allowable error, which proves the accuracy and efficiency of the method.

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“…Journal Pre-proof is defined using the enrichment radius R enr as illustrated in Figure 3. Kim et al [34] recommend a normalized enrichment radius R enr /( √ 3L e ) ≥ 2 which corresponds to an enrichment of at least two elements near the crack tip. When the X-FEM model has been solved, the level set values in the nodes surrounding the cracks and crack tips, the SIF solutions (Mode I, II and III) for all contour integrals along the crack front and the coordinates of the X-FEM integration points are extracted.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

“…Therefore the K eq distribution is smoothed. Good results can be obtained by fitting a 5 th degree polynomial to the K eq distribution, but in many cases a 3 rd degree polynomial is sufficient [34].…”

Section: X-fem Data Extraction and Processingmentioning

confidence: 99%

An X-FEM based framework for 3D fatigue crack growth using a B-spline crack geometry description

Hectors

Waele

2022

Engineering Fracture Mechanics

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The mesh density effect on stress intensity factor calculation using ABAQUS XFEM

Cited by 9 publications

References 10 publications

Full‐scale testing of near‐neutral pH stress corrosion cracking growth behavior of a vintage X52 oil pipe

Full‐scale testing of near‐neutral pH stress corrosion cracking growth behavior of a vintage X52 oil pipe

Multi-Scale Model Crack Extension Study Based on XFEM

An X-FEM based framework for 3D fatigue crack growth using a B-spline crack geometry description

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