The modified Gurson model accounting for the void size effect

J. Wen, Y. Huang*, K. C. Hwang, C. Liu, M. Li

*Corresponding author for this work

Research output: Contribution to journalArticle

112 Citations (Scopus)

Abstract

The Gurson model [J. Engrg. Mater. Technol. 99 (1977) 2] has been widely used to study the deformation and failure of metallic materials containing microvoids. The void volume fraction is the only parameter representing voids since the void size does not come into play in the Gurson model. Based on the Taylor dislocation model [Proc. R. Soc. (Lond.) A145 (1934) 362; J. Int. Metals 62 (1938) 307], we extend the Gurson model to account for the void size effect. It is shown that the yield surfaces for micron- and submicron-sized voids are significantly larger than that given by the Gurson model. For a voided, dilating material subject to uniaxial tension, the void size has essentially no effect on the stress-strain curve at small initial void volume fraction. However, as the initial void volume fraction increases, the void size effect may become significant.

Original languageEnglish (US)
Pages (from-to)381-395
Number of pages15
JournalInternational journal of plasticity
Volume21
Issue number2
DOIs
StatePublished - Feb 1 2005

Fingerprint

Volume fraction
Stress-strain curves
Metals

Keywords

  • Gurson model
  • Spherical microvoid
  • Taylor dislocation model
  • Void size effect
  • Yield condition

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Wen, J. ; Huang, Y. ; Hwang, K. C. ; Liu, C. ; Li, M. / The modified Gurson model accounting for the void size effect. In: International journal of plasticity. 2005 ; Vol. 21, No. 2. pp. 381-395.
@article{36ab1dad7e614d4bb7d8cc62ff931d62,
title = "The modified Gurson model accounting for the void size effect",
abstract = "The Gurson model [J. Engrg. Mater. Technol. 99 (1977) 2] has been widely used to study the deformation and failure of metallic materials containing microvoids. The void volume fraction is the only parameter representing voids since the void size does not come into play in the Gurson model. Based on the Taylor dislocation model [Proc. R. Soc. (Lond.) A145 (1934) 362; J. Int. Metals 62 (1938) 307], we extend the Gurson model to account for the void size effect. It is shown that the yield surfaces for micron- and submicron-sized voids are significantly larger than that given by the Gurson model. For a voided, dilating material subject to uniaxial tension, the void size has essentially no effect on the stress-strain curve at small initial void volume fraction. However, as the initial void volume fraction increases, the void size effect may become significant.",
keywords = "Gurson model, Spherical microvoid, Taylor dislocation model, Void size effect, Yield condition",
author = "J. Wen and Y. Huang and Hwang, {K. C.} and C. Liu and M. Li",
year = "2005",
month = "2",
day = "1",
doi = "10.1016/j.ijplas.2004.01.004",
language = "English (US)",
volume = "21",
pages = "381--395",
journal = "International Journal of Plasticity",
issn = "0749-6419",
publisher = "Elsevier Limited",
number = "2",

}

The modified Gurson model accounting for the void size effect. / Wen, J.; Huang, Y.; Hwang, K. C.; Liu, C.; Li, M.

In: International journal of plasticity, Vol. 21, No. 2, 01.02.2005, p. 381-395.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The modified Gurson model accounting for the void size effect

AU - Wen, J.

AU - Huang, Y.

AU - Hwang, K. C.

AU - Liu, C.

AU - Li, M.

PY - 2005/2/1

Y1 - 2005/2/1

N2 - The Gurson model [J. Engrg. Mater. Technol. 99 (1977) 2] has been widely used to study the deformation and failure of metallic materials containing microvoids. The void volume fraction is the only parameter representing voids since the void size does not come into play in the Gurson model. Based on the Taylor dislocation model [Proc. R. Soc. (Lond.) A145 (1934) 362; J. Int. Metals 62 (1938) 307], we extend the Gurson model to account for the void size effect. It is shown that the yield surfaces for micron- and submicron-sized voids are significantly larger than that given by the Gurson model. For a voided, dilating material subject to uniaxial tension, the void size has essentially no effect on the stress-strain curve at small initial void volume fraction. However, as the initial void volume fraction increases, the void size effect may become significant.

AB - The Gurson model [J. Engrg. Mater. Technol. 99 (1977) 2] has been widely used to study the deformation and failure of metallic materials containing microvoids. The void volume fraction is the only parameter representing voids since the void size does not come into play in the Gurson model. Based on the Taylor dislocation model [Proc. R. Soc. (Lond.) A145 (1934) 362; J. Int. Metals 62 (1938) 307], we extend the Gurson model to account for the void size effect. It is shown that the yield surfaces for micron- and submicron-sized voids are significantly larger than that given by the Gurson model. For a voided, dilating material subject to uniaxial tension, the void size has essentially no effect on the stress-strain curve at small initial void volume fraction. However, as the initial void volume fraction increases, the void size effect may become significant.

KW - Gurson model

KW - Spherical microvoid

KW - Taylor dislocation model

KW - Void size effect

KW - Yield condition

UR - http://www.scopus.com/inward/record.url?scp=5144219998&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=5144219998&partnerID=8YFLogxK

U2 - 10.1016/j.ijplas.2004.01.004

DO - 10.1016/j.ijplas.2004.01.004

M3 - Article

VL - 21

SP - 381

EP - 395

JO - International Journal of Plasticity

JF - International Journal of Plasticity

SN - 0749-6419

IS - 2

ER -