Predicting ductile fracture of cracked pipes using small punch test data

Jong Min Lee, Jin Ha Hwang, Yun Jae Kim, Jin Weon Kim

Research output: Contribution to journalArticlepeer-review

Abstract

This paper proposes a numerical method to simulate ductile fracture of a cracked pipe using small punch test data. The method is using FE damage analysis method based on the multi-axial fracture strain energy density model. The parameters in the damage model can be extracted solely from small punch test data, using which compact tension and circumferential through-wall cracked pipe tests are simulated. To validate the proposed method, simulation results are compared with TP316L experimental data. For the compact tension test, faster crack growth is predicted but for the pipe test, good agreement is obtained. The effect of the stress triaxiality on the prediction accuracy is discussed.

Original languageEnglish
Article number104211
JournalEuropean Journal of Mechanics, A/Solids
Volume87
DOIs
Publication statusPublished - 2021 May 1

Keywords

  • Ductile fracture simulation
  • Finite element damage analysis
  • Fracture toughness estimation
  • Small punch test
  • Stress-modified fracture strain energy density

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Physics and Astronomy(all)

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