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Title of Journal: Rheol Acta

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Abbravation: Rheologica Acta

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Springer-Verlag

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10.1016/j.acthis.2009.05.009

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1435-1528

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Squeeze flow of soft solids between rough surfaces

Authors: Gerald Henry Meeten
Publish Date: 2003/11/22
Volume: 43, Issue: 1, Pages: 6-16
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Abstract

Newtonian liquids and nonNewtonian soft solids were squeezed between parallel glass plates by a constant force F applied at time t=0 The plate separation ht and the squeezerate V = dot h were measured for different amplitudes of plate roughness in the range 03–31 μm Newtonian liquids obeyed the relation V∝h 3 of Stephan 1874 for large plate separations Departures from this relation that occurred when h approached the roughness amplitude were attributed to radial liquid permeation through the rough region Most nonNewtonian materials showed boundaryslip that varied with roughness amplitude Some showed slip that varied strongly during the squeezing process Perfect slip zero boundary shear stress was not approached by any material even when squeezed by opticallypolished plates If the plates had sufficient roughness amplitude eg about 30 μm boundary slip was practically absent and the dependence of V on h was close to that predicted by noslip theory of a HerschelBulkley fluid in squeeze flow Covey and Stanmore 1981 Adams et al 1994I am grateful to JD Sherwood Schlumberger and WG Griffin University of Cambridge Earth Sciences for useful discussions and to EW Llewellin University of Bristol for unpublished LGS data I am obliged to MC Sheppard Schlumberger for his support


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  2. Amorphous and crystalline states of ultrasoft colloids: a molecular dynamics study
  3. A hierarchical multi-mode MSF model for long-chain branched polymer melts part II: multiaxial extensional flows
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  6. Self-reinforcement of polymers as a consequence of elongational flow
  7. The role of convective constraint release in parallel superposition flows of nearly monodisperse entangled polymer solutions
  8. Influence of the initial cooling temperature on the gelation and yield stress of waxy crude oils
  9. Molecular architecture and linear viscoelasticity of homogeneous ethylene/styrene copolymers
  10. Flow analysis of the weld line formation during injection mold filling of thermoplastics
  11. Molecular orientation in non-Newtonian flow of dilute polymer solutions around spheres
  12. The contribution of frictional contacts to the shear strength of coarse glass bead powders and slurries
  13. End effects in rotational viscometry II. Pseudoplastic fluids at elevated Reynolds number
  14. Rheological behaviour of a high-melt-strength polypropylene at elevated pressure and gas loading for foaming purposes
  15. The effect of premature wall yield on creep testing of strongly flocculated suspensions
  16. Rheological and morphological properties of PA6/ECO nanocomposites
  17. Orientation distribution in injection molding: a further step toward more accurate simulations
  18. Fractal analysis of viscoelastic data with automated gel point location and its potential application in the investigation of therapeutically modified blood coagulation
  19. Modeling confinement in polymer nanocomposites from linear viscoelasticity data
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  22. A computational extensional rheology study of two biofluid systems
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  25. Generation of inkjet droplet of non-Newtonian fluid
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  29. An error-minimizing approach to inverse Langevin approximations

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