Energy-based numerical modeling of the strain rate effect on fracture toughness of SA508 Gr. 1a

Hyun Suk Nam, Yun-Jae Kim, Jin Weon Kim, Jong Sung Kim

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This article presents an energy-based method to simulate ductile tearing under dynamic loading conditions. The strain rate-dependent material properties are characterized by the Johnson-Cook-type model. The damage model is defined based on the multi-axial fracture strain energy concept. The proposed damage model is applied to simulate the fracture toughness test of SA508 Gr. 1a under four different test speeds. Simulated results show a good overall agreement with the experimental results.

Original languageEnglish
Pages (from-to)177-189
Number of pages13
JournalJournal of Strain Analysis for Engineering Design
Volume52
Issue number3
DOIs
Publication statusPublished - 2017 Apr 1

Keywords

  • Ductile fracture
  • finite element damage analysis
  • high strain rate condition
  • multi-axial fracture strain energy locus
  • strain rate effect

ASJC Scopus subject areas

  • Modelling and Simulation
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

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