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Diplom- und Master-Arbeiten (eigene und betreute):

M. B. Gándara:
"Assessment of Mixed Uniform Boundary Conditions for Predicting the Macroscopic Mechanical Behavior of Particle Reinforcement Composite Materials";
Betreuer/in(nen): H. J. Böhm, D. H. Pahr; Institut für Leichtbau und Struktur-Biomechanik, TU Wien; Universidade de Vigo, 2008.



Kurzfassung englisch:
The macroscopic mechanical properties of inhomogeneous materials can be evaluated by studying suitable heterogeneous volume elements that are subjected to appropriate boundary conditions. The use of periodic boundary conditions (PBCs) is well established in this context and leads to ``multi-inclusion" unit cells.
The aim of this thesis is the assessment of a new ``windowing" method, which is based on special Mixed Uniform Boundary Conditions (MUBCs).

For this purpose a number of volume elements that describe periodic microgeometries pertinent to particle reinforced composites were subjected to Finite Element analysis with PMUBCs and PBCs. Predictions for the macroscopic elastic tensors and for the thermal expansion tensors of the materials were generated with both types of boundary conditions and compared.

The results of the analysis show approximately the same accuracy for both types of boundary conditions, as well as a higher computational efficiency of the Periodicity Compatible Mixed Uniform Boundary Conditions, i.e. a reduction of the computational time.

The conclusion of this work is that the use of Periodicity Compatible Mixed Uniform Boundary Conditions is convenient for evaluating the macroscopic thermoelastic properties of metal matrix composites reinforced with spherical particles.

Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.