Numerical modelling of the mechanical state of deformable gaskets in diamond anvil cell

S. B. Polotnyak, A. V. Idesman

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The technique has been developed for numerical (by the finite element method (FEM)) modelling of the behaviour of a deformable gasket of the diamond anvil cell (with regard to the effects of high pressures and large elastoplastic strains of the gasket material). By solving the problem of the compression of gaskets of T301 hardened stainless steel and pressed lithographic stone (PLS), we have obtained the distribution of elastic and plastic zones in the gaskets, found out a stage by stage occurrence of deformation process, and defined the distribution of stresses along the diamond anvil-gasket interface. The 8-fold and 5,8-fold compression degrees were achieved for a PLS (Odqvist parameter q ∼ 5,5; volumetric elastic strain - 0,7; pressure - 24 GPa) and a steel (q ∼ 3; volumetric elastic strain - 0,7; pressure - 50 GPa) gaskets, respectively.

Original languageEnglish
Pages (from-to)685-690
Number of pages6
JournalJournal of Materials Processing Technology
Volume60
Issue number1-4
DOIs
StatePublished - Jun 15 1996

Keywords

  • Diamond anvil cell
  • Gasket
  • High pressures
  • Large elastoplastic strains
  • Stress

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