The dynamics of cylindrical samples in dual wind-up extensional rheometers

Kaijia Yu, Henrik K. Rasmussen, Jose Manuel Román Marín, Ole Hassager

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Abstract

Numerical computations of the extension of circular cylindrical shaped samples in a dual wind-up drum rheometer of Sentmanat extensional rheometer type M. L. Sentmanat, Rheol. Acta 43, 657 (2004); R. Garritano and H. Berting, US Patent No. 7,096,728 (08/29/2006) are presented. These time-dependent computations are fully three dimensional and based on theoretically ideal configurations. If necking or sample rupture does not occur, the elongation will resemble as ideal uni-axial if the initial sample diameter is decreased sufficiently. An initial diameter larger than 0.5 mm may result in large deviations from ideal uni-axial deformation.
Original languageEnglish
JournalJournal of Rheology
Volume55
Issue number3
Pages (from-to)571-580
ISSN0148-6055
DOIs
Publication statusPublished - 2011

Bibliographical note

© 2011 The Society of Rheology

Keywords

  • Extension
  • SER
  • Elongation
  • EVF
  • FEM
  • Cylindrical
  • Deformation

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