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TECHNICAL PAPERS

Modeling of the Non-Linear Rheological Behavior of a Lubricating Grease at Low-Shear Rates

[+] Author and Article Information
José M. Madiedo, José M. Franco, Concepción Valencia, Crı́spulo Gallegos

Departamento de Ingenierı́a Quı́mica, Escuela Politécnica Superior, Universidad de Huelva, 21819 Palos de la Frontera (Huelva), Spain

J. Tribol 122(3), 590-596 (Dec 29, 1999) (7 pages) doi:10.1115/1.555406 History: Received June 08, 1999; Revised December 29, 1999
Copyright © 2000 by ASME
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References

Figures

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(a) Evolution of the storage and loss moduli with frequency and recalculation from the linear relaxation spectrum, and (b) linear relaxation spectrum for the lubricating grease studied (T=25°C)
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Evolution of the linear and non-linear relaxation moduli with the elapsed time after shear for the lubricating grease studied (T=25°C)
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Relative values of the damping function for the lubricating grease studied (T=25°C)
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Experimental and predicted values of the steady-state viscosity for the lubricating grease studied (T=25°C)
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Experimental and predicted values of the transient flow viscosity using (a) the Wagner damping function and (b) the Soskey-Winter damping function, for the lubricating grease studied (T=25°C)
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Experimental and predicted values of the transient first normal stress coefficient, using the Soskey-Winter damping function, for the lubricating grease studied (T=25°C)

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