Intensity of stress singularity for the circumferential V-shape corner front of a three-dimensional diamond-like defect
Three-dimensional diamond-like defects with circumferential V-shape corner fronts are often contained in engineering materials. In this paper, generalized stress intensity factors are calculated for this type of defect using a modified advanced finite element method. A super corner front element mod...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Online Access: | https://hdl.handle.net/10356/154094 |
| _version_ | 1824454841709101056 |
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| author | Ping, X. . Zhang, Y. X. Guo, Y. B. Xiao, Z. M. Jalde, J. Chen, M. C. |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Ping, X. . Zhang, Y. X. Guo, Y. B. Xiao, Z. M. Jalde, J. Chen, M. C. |
| author_sort | Ping, X. . |
| collection | NTU |
| description | Three-dimensional diamond-like defects with circumferential V-shape corner fronts are often contained in engineering materials. In this paper, generalized stress intensity factors are calculated for this type of defect using a modified advanced finite element method. A super corner front element model in the global coordinates is established to capture the stress singularities along the circumferential corner front. Three-dimensional numerical series eigen-solutions in the element have been transformed from asymptotic expressions in the local curvilinear coordinates. The element is suitable for a sharp V-shape corner with arbitrary opening and inclination angle. Singular stress fields near various shapes of diamond-like defects are systematically investigated. The interaction of an embedded defect with free surface or another identical defect is also investigated. The numerical results can be used as stress intensity parameters to predict fatigue strength at circumferential corner front of a diamond-like defect. |
| first_indexed | 2025-02-19T03:28:43Z |
| format | Journal Article |
| id | ntu-10356/154094 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:28:43Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1540942021-12-31T14:08:42Z Intensity of stress singularity for the circumferential V-shape corner front of a three-dimensional diamond-like defect Ping, X. . Zhang, Y. X. Guo, Y. B. Xiao, Z. M. Jalde, J. Chen, M. C. School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Circumferential Corner Front Diamond-Like Defect Three-dimensional diamond-like defects with circumferential V-shape corner fronts are often contained in engineering materials. In this paper, generalized stress intensity factors are calculated for this type of defect using a modified advanced finite element method. A super corner front element model in the global coordinates is established to capture the stress singularities along the circumferential corner front. Three-dimensional numerical series eigen-solutions in the element have been transformed from asymptotic expressions in the local curvilinear coordinates. The element is suitable for a sharp V-shape corner with arbitrary opening and inclination angle. Singular stress fields near various shapes of diamond-like defects are systematically investigated. The interaction of an embedded defect with free surface or another identical defect is also investigated. The numerical results can be used as stress intensity parameters to predict fatigue strength at circumferential corner front of a diamond-like defect. Agency for Science, Technology and Research (A*STAR) The authors acknowledge the support of National Natu-ral Science Foundation of China under grantno. 51975411 and 51365013, the Natural Foundation of Tianjin, China, under grantno. 18JCYBJC88500, and the Personnel Training Plan forYoung and Middle-aged Innovation Talents in Universi-ties in Tianjin, China. The work was finished when X. CPing visited Prof. Z.M. Xiao at School of Mechanical andAerospace Engineering in Nanyang Technological Uni-versity as a visiting Scholar. The support of SingaporeA*STAR SERC AME Programmatic Fund for the“Struc-tural Metal Alloys Programme”(project WBSM4070307.051) is also acknowledged. 2021-12-16T00:54:05Z 2021-12-16T00:54:05Z 2020 Journal Article Ping, X. .., Zhang, Y. X., Guo, Y. B., Xiao, Z. M., Jalde, J. & Chen, M. C. (2020). Intensity of stress singularity for the circumferential V-shape corner front of a three-dimensional diamond-like defect. Fatigue and Fracture of Engineering Materials and Structures, 43(4), 802-817. https://dx.doi.org/10.1111/ffe.13189 8756-758X https://hdl.handle.net/10356/154094 10.1111/ffe.13189 2-s2.0-85078659811 4 43 802 817 en BSM4070307.051 Fatigue and Fracture of Engineering Materials and Structures © 2020 Wiley Publishing Ltd. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering Circumferential Corner Front Diamond-Like Defect Ping, X. . Zhang, Y. X. Guo, Y. B. Xiao, Z. M. Jalde, J. Chen, M. C. Intensity of stress singularity for the circumferential V-shape corner front of a three-dimensional diamond-like defect |
| title | Intensity of stress singularity for the circumferential V-shape corner front of a three-dimensional diamond-like defect |
| title_full | Intensity of stress singularity for the circumferential V-shape corner front of a three-dimensional diamond-like defect |
| title_fullStr | Intensity of stress singularity for the circumferential V-shape corner front of a three-dimensional diamond-like defect |
| title_full_unstemmed | Intensity of stress singularity for the circumferential V-shape corner front of a three-dimensional diamond-like defect |
| title_short | Intensity of stress singularity for the circumferential V-shape corner front of a three-dimensional diamond-like defect |
| title_sort | intensity of stress singularity for the circumferential v shape corner front of a three dimensional diamond like defect |
| topic | Engineering::Mechanical engineering Circumferential Corner Front Diamond-Like Defect |
| url | https://hdl.handle.net/10356/154094 |
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