Modelování hliníkových pěn

Abstract

The master's thesis deals with detailed modelling of a closed cell aluminium foam, particularly modal analysis and three-point flexural test simulation of a chosen specimen of rectangular outer shape. The aim of this thesis is to design a detailed numerical model capable of predicting the results of the experiments described above. The thesis is divided into three main parts. A research about aluminium foams, their manufacturing and existing modeling options was conducted in the first part. The second part presents the solution methods and their application leading to designing a detailed numerical model. This bearing part of the thesis contains image processing obtained from X-ray computed tomography, assembling a geometrical model of the specimen, experimental modal analysis, assembling a numerical model for modal analysis, three-point flexural test and assembling a numerical model for three-point flexural test. The third part presents the results of two proposed numerical models and a comparison of achieved conformity with individual experiments. The obtained results can be used for research of particular properties of various machine parts made from aluminium foams.