Effects of superimposed hydrostatic pressure on fracture in round bars under tension

J. Peng, P. D. Wu*, Yonggang Huang, X. X. Chen, D. J. Lloyd, J. D. Embury, K. W. Neale

*Corresponding author for this work

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The effect of superimposed hydrostatic pressure on fracture in round bars under tension is studied numerically using the finite element method based on the Gurson damage model. It is demonstrated that while the superimposed hydrostatic pressure has no noticeable effect on necking, it increases the fracture strain due to the fact that a superimposed pressure delays or completely eliminates the nucleation, growth and coalescence of microvoids or microcracks. The experimentally observed transition of the fracture surface, from the cup-cone mode under atmospheric pressure to a slant structure under high pressure, is numerically reproduced. It is numerically proved that the superimposed hydrostatic pressure has no effect on necking for a damage-free round bar under tension.

Original languageEnglish (US)
Pages (from-to)3741-3749
Number of pages9
JournalInternational Journal of Solids and Structures
Volume46
Issue number20
DOIs
StatePublished - Oct 1 2009

Fingerprint

Hydrostatic Pressure
Hydrostatic pressure
hydrostatic pressure
Damage
damage
Microcracks
microcracks
Coalescence
Nucleation
coalescing
Atmospheric pressure
Cones
atmospheric pressure
cones
finite element method
Cone
Eliminate
Finite Element Method
nucleation
slopes

Keywords

  • Damage criteria
  • Finite element
  • Fracture
  • Hydrostatic pressure

ASJC Scopus subject areas

  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

Cite this

Peng, J. ; Wu, P. D. ; Huang, Yonggang ; Chen, X. X. ; Lloyd, D. J. ; Embury, J. D. ; Neale, K. W. / Effects of superimposed hydrostatic pressure on fracture in round bars under tension. In: International Journal of Solids and Structures. 2009 ; Vol. 46, No. 20. pp. 3741-3749.
@article{e9946d7fae78442f9a849dc9720c8890,
title = "Effects of superimposed hydrostatic pressure on fracture in round bars under tension",
abstract = "The effect of superimposed hydrostatic pressure on fracture in round bars under tension is studied numerically using the finite element method based on the Gurson damage model. It is demonstrated that while the superimposed hydrostatic pressure has no noticeable effect on necking, it increases the fracture strain due to the fact that a superimposed pressure delays or completely eliminates the nucleation, growth and coalescence of microvoids or microcracks. The experimentally observed transition of the fracture surface, from the cup-cone mode under atmospheric pressure to a slant structure under high pressure, is numerically reproduced. It is numerically proved that the superimposed hydrostatic pressure has no effect on necking for a damage-free round bar under tension.",
keywords = "Damage criteria, Finite element, Fracture, Hydrostatic pressure",
author = "J. Peng and Wu, {P. D.} and Yonggang Huang and Chen, {X. X.} and Lloyd, {D. J.} and Embury, {J. D.} and Neale, {K. W.}",
year = "2009",
month = "10",
day = "1",
doi = "10.1016/j.ijsolstr.2009.07.001",
language = "English (US)",
volume = "46",
pages = "3741--3749",
journal = "International Journal of Solids and Structures",
issn = "0020-7683",
publisher = "Elsevier Limited",
number = "20",

}

Effects of superimposed hydrostatic pressure on fracture in round bars under tension. / Peng, J.; Wu, P. D.; Huang, Yonggang; Chen, X. X.; Lloyd, D. J.; Embury, J. D.; Neale, K. W.

In: International Journal of Solids and Structures, Vol. 46, No. 20, 01.10.2009, p. 3741-3749.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of superimposed hydrostatic pressure on fracture in round bars under tension

AU - Peng, J.

AU - Wu, P. D.

AU - Huang, Yonggang

AU - Chen, X. X.

AU - Lloyd, D. J.

AU - Embury, J. D.

AU - Neale, K. W.

PY - 2009/10/1

Y1 - 2009/10/1

N2 - The effect of superimposed hydrostatic pressure on fracture in round bars under tension is studied numerically using the finite element method based on the Gurson damage model. It is demonstrated that while the superimposed hydrostatic pressure has no noticeable effect on necking, it increases the fracture strain due to the fact that a superimposed pressure delays or completely eliminates the nucleation, growth and coalescence of microvoids or microcracks. The experimentally observed transition of the fracture surface, from the cup-cone mode under atmospheric pressure to a slant structure under high pressure, is numerically reproduced. It is numerically proved that the superimposed hydrostatic pressure has no effect on necking for a damage-free round bar under tension.

AB - The effect of superimposed hydrostatic pressure on fracture in round bars under tension is studied numerically using the finite element method based on the Gurson damage model. It is demonstrated that while the superimposed hydrostatic pressure has no noticeable effect on necking, it increases the fracture strain due to the fact that a superimposed pressure delays or completely eliminates the nucleation, growth and coalescence of microvoids or microcracks. The experimentally observed transition of the fracture surface, from the cup-cone mode under atmospheric pressure to a slant structure under high pressure, is numerically reproduced. It is numerically proved that the superimposed hydrostatic pressure has no effect on necking for a damage-free round bar under tension.

KW - Damage criteria

KW - Finite element

KW - Fracture

KW - Hydrostatic pressure

UR - http://www.scopus.com/inward/record.url?scp=68149091424&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=68149091424&partnerID=8YFLogxK

U2 - 10.1016/j.ijsolstr.2009.07.001

DO - 10.1016/j.ijsolstr.2009.07.001

M3 - Article

VL - 46

SP - 3741

EP - 3749

JO - International Journal of Solids and Structures

JF - International Journal of Solids and Structures

SN - 0020-7683

IS - 20

ER -