DETERMINATION OF JOHNSON-COOK FRACTURE STRAIN MODEL FOR AUSTENITIC STAINLESS STEEL 304

Jun Min Seo, Hune Tae Kim, Yun Jae Kim, Hiroyuki Yamada, Tomohisa Kumagai, Hayato Tokunaga, Naoki Miura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, Johnson-Cook fracture strain model considering the effect of stress triaxiality and strain rate is determined for austenitic stainless steel 304. Tensile test data of four different stress triaxiality and six different strain rate conditions are used to determine the parameters in the J-C fracture strain model. To see the effect of local variation of stress triaxiality and strain rate in the specimen, the J-C fracture models are determined in two different ways. The first case uses the initial stress triaxiality and nominal strain rate, and the second case uses the average value of local stress triaxiality and strain rate obtained from finite element analysis. The use of initial stress triaxiality gives conservative estimate of fracture strain at low stress triaxiality, and non-conservative estimate at high stress triaxiality. The use of nominal strain rate gives overall conservative estimate of fracture strain.

Original languageEnglish
Title of host publicationMaterials and Fabrication
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791886182
DOIs
Publication statusPublished - 2022
EventASME 2022 Pressure Vessels and Piping Conference, PVP 2022 - Las Vegas, United States
Duration: 2022 Jul 172022 Jul 22

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume4-B
ISSN (Print)0277-027X

Conference

ConferenceASME 2022 Pressure Vessels and Piping Conference, PVP 2022
Country/TerritoryUnited States
CityLas Vegas
Period22/7/1722/7/22

Bibliographical note

Funding Information:
Part of this work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No.NRF-2019M2D2A2048296).

Publisher Copyright:
Copyright © 2022 by ASME.

Keywords

  • Austenitic stainless steel
  • Johnson-Cook fracture strain model
  • Strain rate
  • Stress triaxiality

ASJC Scopus subject areas

  • Mechanical Engineering

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