Rheologica Acta

, Volume 43, Issue 1, pp 68–79 | Cite as

Modelling the biaxial elongational deformation of soft solids

  • Simin Nasseri
  • Lynne Bilston
  • Babatunde Fasheun
  • Roger TannerEmail author
Original Contribution


This paper reports the results of modelling the biaxial extension of soft solids in lubricated squeezing flow geometry. The nonlinear constitutive model including the single mode Phan-Thien Tanner (PTT) model has been used to model the behaviour of different materials such as a soft tissue (pig liver) and three wheat flours with different protein contents. These were used to evaluate the usefulness of the method and to establish how different compositional or structural parameters could be relevant in determining the rheological behaviour of soft solids. From this study it was found that homogeneous uniaxial compression can be achieved in lubricated squeezing flow. Modelling results are in good agreement with experimental results for all the materials considered.


Viscoelastic Compression Soft tissue Bread dough Rheology 



The authors would like to thank Rebecca Cullinane for providing the experimental data on pig liver. The financial support of the Australian Research Council Large Grant Scheme is gratefully acknowledged


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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • Simin Nasseri
    • 1
  • Lynne Bilston
    • 2
  • Babatunde Fasheun
    • 1
  • Roger Tanner
    • 1
    Email author
  1. 1.School of Aerospace, Mechanical and Mechatronic EngineeringThe University of SydneyAustralia
  2. 2.Prince of Wales Medical Research InstituteRandwickAustralia

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