Normal Stress Ratio Predicted by Viscoelastic Constitutive Equations

The first and second normal stress differences, N 1 and N2 in steady shear flow are calculated using differential constitutive equations proposed by Leonov and Giesekus. At low shear rates, the Leonov model gives -N2/ N1=0.25 for both single and multiple relaxation modes. In the Giesekus model, −N2/...

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Veröffentlicht in:	Nihon Reoroji Gakkaishi 2002, Vol.30(1), pp.65-69
Hauptverfasser:	Isaki, Takeharu, Takahashi, Masaoki
Format:	Artikel
Sprache:	eng
Schlagworte:	Normal stress ratio The BKZ model The Giesekus model The Leonov model Viscoelastic constitutive equation
Online-Zugang:	Volltext
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