On the extent of dominance of asymptotic elastodynamic crack-tip fields: Part II-Numerical investigation of three-dimensional and transient effects

Sridhav Krishnaswamy, Ares J. Rosakis, G. Ravichandran

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

In Part I of this paper, the question of the extent of dominance of the mode I asymptotic elastodynamic crack-tip field (the KdI-field) was studied experimentally. Here, the results of two and three-dimensional elastodynamic finite element simulations of the drop-weight experiments are reported. The load records as obtained from the impact hammer and supports of the drop-weight loading device were used as boundary tractions in the numerical simulations. For the laboratory specimen studied, the results of the simulations indicate that the asymptotic elastodynamic field is not an adequate description of the actual fields prevailing over any sizeable region around the crack tip. This confirms the experimental results of Part I which showed that three-dimensional and transient effects necessarily have to be taken into account for valid interpretation of experimental results.

Original languageEnglish (US)
Pages (from-to)95-103
Number of pages9
JournalJournal of Applied Mechanics, Transactions ASME
Volume58
Issue number1
DOIs
StatePublished - Mar 1991

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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