Numerical Ductile Tearing Simulation of Circumferential Cracked Pipe Tests under Dynamic Loading Conditions

Hyun Suk Nam, Ji Soo Kim, Ho Wan Ryu, Yun Jae Kim, Jin Weon Kim

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper presents a numerical method to simulate ductile tearing in cracked components under high strain rates using finite element damage analysis. The strain rate dependence on tensile properties and multiaxial fracture strain is characterized by the model developed by Johnson and Cook. The damage model is then defined based on the ductility exhaustion concept using the strain rate dependent multiaxial fracture strain concept. The proposed model is applied to simulate previously published three cracked pipe bending test results under two different test speed conditions. Simulated results show overall good agreement with experimental results.

Original languageEnglish
Pages (from-to)1252-1263
Number of pages12
JournalNuclear Engineering and Technology
Volume48
Issue number5
DOIs
Publication statusPublished - 2016 Oct 1
Externally publishedYes

Keywords

  • Ductile fracture
  • Finite element damage analysis
  • High strain rate condition
  • Multiaxial fracture strain locus

ASJC Scopus subject areas

  • Nuclear Energy and Engineering

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