A Strain Rate Dependent Computational Model of Ductile Damage for C(T) Specimen

H. S. Nam, J. Y. Jeon, J. S. Kim, J. W. Kim, Yun Jae Kim

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

This paper is based on a ductile failure simulation under dynamic loading conditions using finite element (FE) analyses. This paper proposed to implement fracture simulation based on the energy based numerical ductile fracture model. The energy based numerical ductile fracture model is determined to be incremental damage in terms of stress triaxiality (σme) and fracture strain energy (Wf) for dimple fracture from tensile test result with FE analyses technique. Since dynamic loading effect is especially important to assess crack-like defect components, this work propose the integrated model which combines quasi-static with dynamic loading effect. In order to validate energy based numerical ductile fracture model in dynamic loading conditions, this paper compares FE results with test results. The tensile properties for SA 508 Gr. 1a carbon steel were examined over a wide range of strain rates. Five different strain rate tensile test results are fitted by Johnson-Cook model. Also, two types of notch tensile tests were examined under four different strain rates. The energy based numerical ductile fracture model criterion was calibrated by FE analyses with strain rate dependent tensile and notch test results. The calibrated damage model predicts CT test result. Simulated results agree well with experimental data.

Original languageEnglish
Pages (from-to)861-867
Number of pages7
JournalProcedia Engineering
Volume130
DOIs
Publication statusPublished - 2015 Jan 1
Externally publishedYes
Event14th International Conference on Pressure Vessel Technology, 2015 - Shanghai, China
Duration: 2015 Sep 232015 Sep 26

Fingerprint

Strain rate
Ductile fracture
Strain energy
Tensile properties
Carbon steel
Cracks
Defects

Keywords

  • Ductile fracture
  • Fracture simulation
  • High strain condition

ASJC Scopus subject areas

  • Engineering(all)

Cite this

A Strain Rate Dependent Computational Model of Ductile Damage for C(T) Specimen. / Nam, H. S.; Jeon, J. Y.; Kim, J. S.; Kim, J. W.; Kim, Yun Jae.

In: Procedia Engineering, Vol. 130, 01.01.2015, p. 861-867.

Research output: Contribution to journalConference article

Nam, H. S. ; Jeon, J. Y. ; Kim, J. S. ; Kim, J. W. ; Kim, Yun Jae. / A Strain Rate Dependent Computational Model of Ductile Damage for C(T) Specimen. In: Procedia Engineering. 2015 ; Vol. 130. pp. 861-867.
@article{51588dcf8f394403b15ef47bf232b3a4,
title = "A Strain Rate Dependent Computational Model of Ductile Damage for C(T) Specimen",
abstract = "This paper is based on a ductile failure simulation under dynamic loading conditions using finite element (FE) analyses. This paper proposed to implement fracture simulation based on the energy based numerical ductile fracture model. The energy based numerical ductile fracture model is determined to be incremental damage in terms of stress triaxiality (σm/σe) and fracture strain energy (Wf) for dimple fracture from tensile test result with FE analyses technique. Since dynamic loading effect is especially important to assess crack-like defect components, this work propose the integrated model which combines quasi-static with dynamic loading effect. In order to validate energy based numerical ductile fracture model in dynamic loading conditions, this paper compares FE results with test results. The tensile properties for SA 508 Gr. 1a carbon steel were examined over a wide range of strain rates. Five different strain rate tensile test results are fitted by Johnson-Cook model. Also, two types of notch tensile tests were examined under four different strain rates. The energy based numerical ductile fracture model criterion was calibrated by FE analyses with strain rate dependent tensile and notch test results. The calibrated damage model predicts CT test result. Simulated results agree well with experimental data.",
keywords = "Ductile fracture, Fracture simulation, High strain condition",
author = "Nam, {H. S.} and Jeon, {J. Y.} and Kim, {J. S.} and Kim, {J. W.} and Kim, {Yun Jae}",
year = "2015",
month = "1",
day = "1",
doi = "10.1016/j.proeng.2015.12.212",
language = "English",
volume = "130",
pages = "861--867",
journal = "Procedia Engineering",
issn = "1877-7058",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - A Strain Rate Dependent Computational Model of Ductile Damage for C(T) Specimen

AU - Nam, H. S.

AU - Jeon, J. Y.

AU - Kim, J. S.

AU - Kim, J. W.

AU - Kim, Yun Jae

PY - 2015/1/1

Y1 - 2015/1/1

N2 - This paper is based on a ductile failure simulation under dynamic loading conditions using finite element (FE) analyses. This paper proposed to implement fracture simulation based on the energy based numerical ductile fracture model. The energy based numerical ductile fracture model is determined to be incremental damage in terms of stress triaxiality (σm/σe) and fracture strain energy (Wf) for dimple fracture from tensile test result with FE analyses technique. Since dynamic loading effect is especially important to assess crack-like defect components, this work propose the integrated model which combines quasi-static with dynamic loading effect. In order to validate energy based numerical ductile fracture model in dynamic loading conditions, this paper compares FE results with test results. The tensile properties for SA 508 Gr. 1a carbon steel were examined over a wide range of strain rates. Five different strain rate tensile test results are fitted by Johnson-Cook model. Also, two types of notch tensile tests were examined under four different strain rates. The energy based numerical ductile fracture model criterion was calibrated by FE analyses with strain rate dependent tensile and notch test results. The calibrated damage model predicts CT test result. Simulated results agree well with experimental data.

AB - This paper is based on a ductile failure simulation under dynamic loading conditions using finite element (FE) analyses. This paper proposed to implement fracture simulation based on the energy based numerical ductile fracture model. The energy based numerical ductile fracture model is determined to be incremental damage in terms of stress triaxiality (σm/σe) and fracture strain energy (Wf) for dimple fracture from tensile test result with FE analyses technique. Since dynamic loading effect is especially important to assess crack-like defect components, this work propose the integrated model which combines quasi-static with dynamic loading effect. In order to validate energy based numerical ductile fracture model in dynamic loading conditions, this paper compares FE results with test results. The tensile properties for SA 508 Gr. 1a carbon steel were examined over a wide range of strain rates. Five different strain rate tensile test results are fitted by Johnson-Cook model. Also, two types of notch tensile tests were examined under four different strain rates. The energy based numerical ductile fracture model criterion was calibrated by FE analyses with strain rate dependent tensile and notch test results. The calibrated damage model predicts CT test result. Simulated results agree well with experimental data.

KW - Ductile fracture

KW - Fracture simulation

KW - High strain condition

UR - http://www.scopus.com/inward/record.url?scp=84964078927&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84964078927&partnerID=8YFLogxK

U2 - 10.1016/j.proeng.2015.12.212

DO - 10.1016/j.proeng.2015.12.212

M3 - Conference article

AN - SCOPUS:84964078927

VL - 130

SP - 861

EP - 867

JO - Procedia Engineering

JF - Procedia Engineering

SN - 1877-7058

ER -