Heat Conduction in Complex Geometric Structures on Example of Neovius Periodic Surface

R. Dyja, E. Gawronska Częstochowa University of Technology, 42-201 Częstochowa, Poland

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Heat conduction is an important problem in additive manufacturing, which is the main source of interest for periodic surface structures. The high energy flux, which is required for additive manufacturing to work properly, results in large temperature gradients, which can affect the quality of an obtained part in such properties like porosity or residual stresses. In this paper, we present results of heat conduction calculations in domains of complex geometric shapes expressed by a mathematical description. Such shapes are called periodic surface structures and a well known example of this type of structure is the gyroid, while the Neovius surface is another example. The periodic surface structures can be described by a number of factors, like the thickness or a number of cells, which have impact on their behavior in heat conduction problems. We developed a software that allows for automatic generations of finite element meshes for the Neovius surface according to a given set of parameters. Those meshes are used as an input for heat conduction simulations, whose results are then the base for the analysis of the influence of geometric factors on temperature distribution.

DOI:10.12693/APhysPolA.139.594 topics: FEM, heat transfer, periodic surface structure, numerical simulation