Mori-Tanaka Based Estimates of Effective Thermal Conductivity of Various Engineering Materials

نویسندگان

  • Jan Stransky
  • Jan Vorel
  • Jan Zeman
  • Michal Sejnoha
چکیده

The purpose of this paper is to present a simple micromechanics-based model to estimate the effective thermal conductivity of macroscopically isotropic materials of matrix-inclusion type. The methodology is based on the well-established Mori-Tanaka method for composite media reinforced with ellipsoidal inclusions, extended to account for imperfect thermal contact at the matrix-inclusion interface, random orientation of particles and particle size distribution. Using simple ensemble averaging arguments, we show that the Mori-Tanaka relations are still applicable for these complex systems, provided that the inclusion conductivity is appropriately modified. Such conclusion is supported by the verification of the model against a detailed finite-element study as well as its validation against experimental data for a wide range of engineering material systems.

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عنوان ژورنال:
  • Micromachines

دوره 2  شماره 

صفحات  -

تاریخ انتشار 2011