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  • Concentrated suspension  (1)
  • network theory  (1)
  • 1
    Digitale Medien
    Digitale Medien
    A network theory for the thermal conductivity of an amorphous polymeric material (1989)
    Springer
    Rheologica acta 28 (1989), S. 257-266 
    Details
    ISSN: 1435-1528
    Schlagwort(e): Thermalconductivity ; anisotropy ; network theory ; polymer ; rubber
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Abstract A model to relate the thermal conductivity tensor to the deformation of an amorphous polymeric material above the glass transition temperature is presented. The basis of the model is formed by the transient network theory for polymer melts. With this theory it is possible to calculate the average orientation of the macromolecular segments as a function of the history of the deformation. Combined with an expression which relates the thermal conductivity to the orientation of the molecules, this provides us with the information needed to calculate the heat conduction tensor. Despite the fact that the simplest possible network model is chosen, there is good agreement with the sparse, experimental results.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01329335
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Modeling of concentrated suspensions (1991)
    Springer
    Journal of statistical physics 62 (1991), S. 1225-1237 
    Details
    ISSN: 1572-9613
    Schlagwort(e): Concentrated suspension ; volume averaging ; viscosity ; stress tensor ; lubrication approximation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The constitutive equation of a concentrated suspension of spherical particles in a Newtonian medium is derived. To this end the method of local volume averaging is employed. To calculate the contribution of the particles to the stress tensor it is assumed that the stress generated in the interstitial holes between the particles is negligible compared to the stress generated in !he narrow gaps separating the particles. The use of the resulting expression is demonstrated with two examples on a cubical arrangement of particles: pure shear and simple shear. Furthermore, the validity of the lubrication approximation employed in this work is checked against the results derived by Nunan and Keller for periodic suspensions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01128184
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