Finite element simulation of the thermal conductivity of perforated hollow sphere structures (PHSS): Parametric study

Finite element simulation of the macroscopic heat conductivity of syntactic perforated hollow sphere structures

“…For this work, all the simulations were done by using the commercial finite element package MSC.Marcm (MSC Software Corporation, Santa Ana, CA, USA) and a respective subroutine was used to extract the results and to calculate the thermal properties on the macroscopic level. The assumed cubic symmetry of the primitive cubic arrangement commonly leads to computational models where only one-fourth of a unit cell is considered in the primary orientation, thus reducing the computation time [2][3][4]. For a three-dimensional meshing, principally tetrahedral or hexahedral elements can be employed.…”

“…4(b) nodes has a coarser approximation of the spherical shape compared to the smooth profile found in the model with the denser number of nodes. In order to evaluate the possibility to further decrease the size of the computational models, preliminary computations checked if in fact one-fourth models as in [2][3][4] are required or if the structure can be reduced to one-eighth, Fig. 5.…”

“…The thermal properties of these perforated hollow sphere structures (PHSS) were simulated in Refs. [2][3][4]. These investigations focused on PHSS connected localized by a neck region and questions such as the influence of different base materials of the spheres [2], the influence of the hole diameter and the geometry of the neck region [3] or different joining techniques [4] on the overall thermal conductivity were investigated.…”

“…[2][3][4]. These investigations focused on PHSS connected localized by a neck region and questions such as the influence of different base materials of the spheres [2], the influence of the hole diameter and the geometry of the neck region [3] or different joining techniques [4] on the overall thermal conductivity were investigated. These investigations were continued in [5] where the influence of different contact topologies of sintered sphere structures on the thermal conductivity was investigated.…”

Large deformation of core materials for sandwich panels

“…First investigations of the thermal properties of perforated hollow sphere structures are reported in [14]. For synthetic foams also a lot of published works can be found, e. g. [15].…”