  In this paper we study the effective thermal behaviour of 3D representative
volume elements (RVEs) of two-phased composite materials constituted by a
matrix with cylindrical and spherical inclusions distributed randomly, with
periodic boundaries. Variations around the shape of inclusions have been taken
into account, by corrugating shapes, excavating and/or by removing pieces of
inclusions. The effective behaviour is computed with the help of homogenization
process based on an accelerated FFT-scheme giving the thermal conductivity
tensor. Several morphological parameters are also taken into account for
instance the number and the volume fraction of each type of inclusions,... in
order to analyse the behaviour of the composite for a large number of
geometries. We compare the results obtained for RVEs with and without
variations, and then with the mechanical results of such composite studied in
our previous paper.
