Application of cohesive zone model to large scale circumferential through-wall and 360° surface cracked pipes under static and dynamic loadings

Ji Hee Moon, Youn Young Jang, Nam Su Huh, Do Jun Shim, Kyoungsoo Park

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

This paper presents ductile fracture simulation of full-scale cracked pipe for nuclear piping materials using the cohesive zone model (CZM). The main objective of this study is to investigate the applicability of CZM to predict ductile fracture of cracked pipes with various crack shapes and under quasi-static/dynamic loadings. The transferability of the traction-separation (T-S) curve from a small-scale specimen to a full-scale pipe is demonstrated by simulating small- and full-scale tests. T-S curves are calibrated by comparing experimental data of compact tension specimens with finite element analysis results. The calibrated T-S curves are utilized to predict the fracture behavior of cracked pipes. Three types of full-scale pipe tests are considered: pipe with circumferential through-wall crack under quasi-static/dynamic loadings, and with 360° internal surface crack under quasi-static loading. Computational results using the calibrated T-S curves show a good agreement with experimental data, demonstrating the transferability of the T-S curves from small-scale specimen.

Original languageEnglish
Pages (from-to)974-987
Number of pages14
JournalNuclear Engineering and Technology
Volume53
Issue number3
DOIs
Publication statusPublished - 2021 Mar

Bibliographical note

Publisher Copyright:
© 2020 Korean Nuclear Society

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering

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