On the spring-back and re-rounding mechanism of a plain dent on the sandwich pipe

Dent defect is a common cause of failure of the submarine pipelines, which not only leads to a reduction in the structural resistance of the submarine pipeline but also may induce the collapse of the submarine pipeline. The study aims to thoroughly investigate the dent spring-back and re-rounding characteristics of the inner and outer pipe of the sandwich pipe under lateral loading. This paper examines the sandwich pipe's dent spring-back and re-rounding processes through experiments and numerical simulations. The study shows that a higher bonding strength and a larger dent orientation angle will result in more excellent dent spring-back of the inner and outer pipes. The core layer material on the inner and outer pipe dent spring-back has a significant impact. Internal pressure improvement contributes to improving the indentation re-rounding ability of the inner and outer pipes. The larger the annular ratio, the closer the sandwich pipe inner and outer pipe dent re-rounding ability is. Finally, empirical formulas of the inner and outer pipe dent re-rounding coefficients are established, and the average errors are less than 10%. The research results can provide theoretical guidance for the safe operation of submarine pipelines containing indentations.

• Record URL:
  • https://doi.org/10.1016/j.oceaneng.2024.119491
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0029801824028294
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00298018
• Supplemental Notes:
  • © 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. Abstract reprinted with permission of Elsevier.
• Authors:
  • Wan, Feng
  • Tian, Haifeng
  • 0009-0009-0461-816X
  • Guan, Feng
  • Qi, Changxin
  • Liao, Jinqiang
• Publication Date: 2024-12-1

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 119491
• Serial:
  • Ocean Engineering
  • Volume: 313
  • Issue Number: 0
  • Publisher: Pergamon
  • ISSN: 0029-8018
  • EISSN: 1873-5258
  • Serial URL: http://www.sciencedirect.com/science/journal/00298018

Subject/Index Terms

• TRT Terms: Defects; Predictive models; Sandwich construction; Simulation; Underwater pipelines
• Subject Areas: Maintenance and Preservation; Marine Transportation; Pipelines;

Filing Info

• Accession Number: 01937093
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 18 2024 2:21PM