Rheologica Acta

, Volume 39, Issue 4, pp 409–417

Oscillatory squeezing flow of a biological material

  • Nhan Phan-Thien
  • Simin Nasseri
  • Lynne E. Bilston
ORIGINAL CONTRIBUTION

DOI: 10.1007/s003970000093

Cite this article as:
Phan-Thien, N., Nasseri, S. & Bilston, L. Rheol. Acta (2000) 39: 409. doi:10.1007/s003970000093
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Abstract

Large-amplitude oscillatory squeezing flow data are reported for a complex biological material, which is highly shear-thinning in oscillatory shear flow. This soft tissue has a linear viscoelastic limit at a strain of approximately 0.2%. The oscillatory squeezing flow data at large strain are analyzed using two constitutive models: a bi-viscosity Newtonian model, and a non-linear Maxwell model. It is found that although both models may have the same response in shape, the later matches with our non-linear experimental data better. It is also concluded that the non-linear response of the material in large amplitude oscillatory flow is mainly due to the shear thinning of the material.

Key words Squeezing flow Rheology constitutive model Kidney 

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Nhan Phan-Thien
    • 2
  • Simin Nasseri
    • 1
  • Lynne E. Bilston
    • 1
  1. 1.Department of Mechanical and Mechatronic Engineering University of Sydney NSW 2006 AustraliaAU
  2. 2.Mechanical and Production Engineering Department, National University of Singapore Singapore 118261SG

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