Fracture testing and finite element modeling of pure titanium

G. H. Paulino, R. D. Carpenter, W. W. Liang, Z. A. Munir, J. C. Gibeling

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents the results of fracture experiments and corresponding finite element analyses (FEA) of pure titanium. This investigation was motivated by the desire to develop a J-R testing protocol and numerical procedures that are applicable to a titanium/titanium boride layered functionally graded material. Tensile tests and a two-dimensional axisymmetric finite element model were used to determine the plasticity data for the titanium. Crack growth experiments were conducted in three-point bending using single edge notched bend specimens. Three-dimensional FEA of crack growth initiation and two-dimensional FEA with automatic crack propagation were performed. Two crack propagation conditions based on experimental data were used: (a) crack length versus load-line displacement and (b) crack length versus crack mouth opening displacement. The subsequent predictions of the non-linear finite element models are in reasonable agreement with the measured value of J at initiation and with the rising J-R data during crack propagation.

Original languageEnglish (US)
Pages (from-to)1417-1432
Number of pages16
JournalEngineering Fracture Mechanics
Volume68
Issue number12
DOIs
StatePublished - Jul 19 2001

Keywords

  • Crack mouth opening displacement
  • Crack resistance curves
  • Elastoplastic fracture mechanics
  • Finite element analysis
  • J-R
  • Titanium

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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