A modified cyclic cohesive zone model for low-cycle fatigue crack initiation prediction for subsea pipelines under mode I loading

A modified cyclic cohesive zone model (CCZM) is developed for low-cycle fatigue crack initiation prediction for subsea pipelines. The traction and separation law in the model is modified by employing a piecewise function and linear softening for improving the computational convergence but maintaining the material nonlinearity. The validity of the modified model is evaluated with experimental results of two full-scale pipe specimens and also the results estimated by six published models. An engineering application is further presented to demonstrate the capability of the model and a parametric study is performed for investigating the impact of model parameters on model prediction.

• Record URL:
  • https://doi.org/10.1016/j.oceaneng.2023.114200
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S002980182300584X
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00298018
• Supplemental Notes:
  • © 2023 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Song, Zhi-Hao
  • Chen, Nian-Zhong
  • 0000-0002-7661-5269
• Publication Date: 2023-5-15

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: 114200
• Serial:
  • Ocean Engineering
  • Volume: 276
  • 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: Crack propagation; Fatigue (Mechanics); Loads; Predictive models; Underwater pipelines
• Subject Areas: Marine Transportation; Pipelines;

Filing Info

• Accession Number: 01882926
• Record Type: Publication
• Files: TRIS
• Created Date: May 23 2023 10:09AM