Fracture mechanics assessment for different notch sizes using finite element analysis based on ductile failure simulation

Keun Hyung Bae, Jun Young Jeon, Jae Jun Han, Hyun Suk Nam, Dae Young Lee, Yun-Jae Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In this study, notch defects are evaluated using fracture mechanics. To understand the effects of notch defects, FE analysis is conducted to predict the limit load and J-integral for middle-cracked and single-edge cracked plates with various sizes of notch under tension and bending. As the radius of the notch increases, the energy release rate also increases, although the limit load remains constant. The values of fracture toughness(JIC) of SM490A are determined for various notch radii through FE simulation instead of conducting an experiment. As the radius of the notch increases, the energy release rate also increases, together with a more significant increase in fracture toughness. To conclude, as the notch radius increases, the resistance to crack propagation also increases.

Original languageEnglish
Pages (from-to)693-701
Number of pages9
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume40
Issue number8
DOIs
Publication statusPublished - 2016 Aug 1

Keywords

  • Damage simulation
  • Notch C(T)
  • Notch defect
  • Notch effect
  • Virtual testing method

ASJC Scopus subject areas

  • Mechanical Engineering

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