A stress-based model for shear ductile fracture

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Abstract

A stress-based model is developed to describe shear ductile fracture of lightweight metals. The proposed function couples the effect of the maximum shear stress and the stress triaxiality on fracture limits of metals during plastic deformation. Effect of the maximum shear stress in the proposed fracture model is correlated with the influence of the Lode parameter on fracture limits. The proposed fracture model is applied to depict the fracture locus of AA2024-T351. The predicted fracture locus is compared with experimental results of the alloy. The comparison demonstrates that the proposed fracture model reasonably characterizes the fracture stress in various loading conditions of compression, shear and tension.

Original languageEnglish
Title of host publicationAdvances in Engineering Plasticity and its Application IX
EditorsJeong Whan Yoon, Heung Nam Han, Beom Soo Kang, Young-Suk Kim
PublisherTrans Tech Publications Ltd
Pages3-8
Number of pages6
ISBN (Print)9783035713626
DOIs
StatePublished - 2019
Event14th Asia-Pacific Symposium on Engineering Plasticity and its Applications, AEPA 2018 - Seogwipo-si, Korea, Republic of
Duration: 2 Dec 20187 Dec 2018

Publication series

NameKey Engineering Materials
Volume794 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference14th Asia-Pacific Symposium on Engineering Plasticity and its Applications, AEPA 2018
Country/TerritoryKorea, Republic of
CitySeogwipo-si
Period2/12/187/12/18

Keywords

  • Aluminum alloy
  • Lightweight metal
  • Lode parameter
  • Shear ductile fracture
  • Stress triaxiality

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