Pit defects due to corrosion may occur in the inner surfaces of metal liners of fiber wrapped composite cylinders during working process, which may affect their anti-fatigue performance. Finite element method was used to analyze the stress of hoop-wrapped composite cylinders with pit defects of different sizes based on element birth and death method to take the pre-stress resulted from autofrettage process into consideration. Numeral results show that stress concentration appears in the pit defects, but the portion of the liner far away from pit defects keeps the same stress level with the defect-free composite cylinder. Pit defects on liner reduce the fatigue performance of the composite cylinder. Goodman equation was utilized to calculate the equivalent alternating stress amplitude to evaluate the variation of the fatigue performance with the dimensional change of the pit defects in the inner surfaces of metal liners of hoop-wrapped composite cylinders.
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ASME 2014 Pressure Vessels and Piping Conference
July 20–24, 2014
Anaheim, California, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-4598-1
PROCEEDINGS PAPER
Fatigue Performance Analysis of Hoop-Wrapped Composite Cylinders With Pit Defects on Liner Based on Element Birth and Death Method
Guide Deng,
Guide Deng
China Special Equipment Inspection and Research Institute, Beijing, China
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Qingwan Li,
Qingwan Li
Nanjing Tech University, Nanjing, China
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Liang Sun,
Liang Sun
China Special Equipment Inspection and Research Institute, Beijing, China
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Jingxian Wang,
Jingxian Wang
Taiyuan University of Technology, Taiyuan, China
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Xiang Ling
Xiang Ling
Nanjing Tech University, Nanjing, China
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Guide Deng
China Special Equipment Inspection and Research Institute, Beijing, China
Qingwan Li
Nanjing Tech University, Nanjing, China
Liang Sun
China Special Equipment Inspection and Research Institute, Beijing, China
Jingxian Wang
Taiyuan University of Technology, Taiyuan, China
Xiang Ling
Nanjing Tech University, Nanjing, China
Paper No:
PVP2014-28740, V001T01A084; 6 pages
Published Online:
November 18, 2014
Citation
Deng, G, Li, Q, Sun, L, Wang, J, & Ling, X. "Fatigue Performance Analysis of Hoop-Wrapped Composite Cylinders With Pit Defects on Liner Based on Element Birth and Death Method." Proceedings of the ASME 2014 Pressure Vessels and Piping Conference. Volume 1: Codes and Standards. Anaheim, California, USA. July 20–24, 2014. V001T01A084. ASME. https://doi.org/10.1115/PVP2014-28740
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