A new cyclic cohesive zone model for fatigue damage analysis of welded vessel
A new cyclic cohesive zone fatigue damage model is proposed to address the fatigue problem spanning high and low cycle stages. The new damage model is integrated with the damage extrapolation technique to improve calculation efficiency. The model's effectiveness in regulating the low-cycle fati...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-11-01
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| Series: | Theoretical and Applied Mechanics Letters |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095034924000424 |
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| author | Changyuan Shen Xiaozhou Xia Dake Yi Zhongmin Xiao |
| author_facet | Changyuan Shen Xiaozhou Xia Dake Yi Zhongmin Xiao |
| author_sort | Changyuan Shen |
| collection | DOAJ |
| description | A new cyclic cohesive zone fatigue damage model is proposed to address the fatigue problem spanning high and low cycle stages. The new damage model is integrated with the damage extrapolation technique to improve calculation efficiency. The model's effectiveness in regulating the low-cycle fatigue evolution rate, overall fatigue damage evolution rate, and stress level at the fatigue turning point is assessed through the comparison of the S-N curves. The fatigue damage model's high precision is proved based on the minor deviation of stress at the turning point of the S-N curve from the actual scenario. Finally, the fatigue damage evolution is simulated considering the effects of pre-load pressure and welding residual stress. It is observed that laser welding induces a significant residual tensile stress, accelerating fatigue damage evolution, while compressive loading impedes fatigue damage progression. |
| format | Article |
| id | doaj-art-42d9efa2ba1b45f6a05b6dcc6d46f004 |
| institution | Kabale University |
| issn | 2095-0349 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Theoretical and Applied Mechanics Letters |
| spelling | doaj-art-42d9efa2ba1b45f6a05b6dcc6d46f0042024-12-26T08:53:03ZengElsevierTheoretical and Applied Mechanics Letters2095-03492024-11-01146100531A new cyclic cohesive zone model for fatigue damage analysis of welded vesselChangyuan Shen0Xiaozhou Xia1Dake Yi2Zhongmin Xiao3College of mechanical and engineering science, Hohai University, Nanjing 211100, ChinaCollege of mechanical and engineering science, Hohai University, Nanjing 211100, China; Corresponding authors.College of mechanical and engineering science, Hohai University, Nanjing 211100, China; Corresponding authors.School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 999002, SingaporeA new cyclic cohesive zone fatigue damage model is proposed to address the fatigue problem spanning high and low cycle stages. The new damage model is integrated with the damage extrapolation technique to improve calculation efficiency. The model's effectiveness in regulating the low-cycle fatigue evolution rate, overall fatigue damage evolution rate, and stress level at the fatigue turning point is assessed through the comparison of the S-N curves. The fatigue damage model's high precision is proved based on the minor deviation of stress at the turning point of the S-N curve from the actual scenario. Finally, the fatigue damage evolution is simulated considering the effects of pre-load pressure and welding residual stress. It is observed that laser welding induces a significant residual tensile stress, accelerating fatigue damage evolution, while compressive loading impedes fatigue damage progression.http://www.sciencedirect.com/science/article/pii/S2095034924000424Cyclic cohesive zone modelFatigue crack propagationWelding residual stressLow-cycle fatigueWelded vessel |
| spellingShingle | Changyuan Shen Xiaozhou Xia Dake Yi Zhongmin Xiao A new cyclic cohesive zone model for fatigue damage analysis of welded vessel Theoretical and Applied Mechanics Letters Cyclic cohesive zone model Fatigue crack propagation Welding residual stress Low-cycle fatigue Welded vessel |
| title | A new cyclic cohesive zone model for fatigue damage analysis of welded vessel |
| title_full | A new cyclic cohesive zone model for fatigue damage analysis of welded vessel |
| title_fullStr | A new cyclic cohesive zone model for fatigue damage analysis of welded vessel |
| title_full_unstemmed | A new cyclic cohesive zone model for fatigue damage analysis of welded vessel |
| title_short | A new cyclic cohesive zone model for fatigue damage analysis of welded vessel |
| title_sort | new cyclic cohesive zone model for fatigue damage analysis of welded vessel |
| topic | Cyclic cohesive zone model Fatigue crack propagation Welding residual stress Low-cycle fatigue Welded vessel |
| url | http://www.sciencedirect.com/science/article/pii/S2095034924000424 |
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