Determination of mechanical properties of materials with complex inner structure using microstructural models

0364770 - ÚTAM 2012 RIV BG eng J - Článek v odborném periodiku
Koudelka, Petr - Jiroušek, Ondřej - Valach, Jaroslav
Determination of mechanical properties of materials with complex inner structure using microstructural models.
MTM - Machines, Technologies, Materials. International virtual journal for science, technics and innovations for the industry. Roč. 5, č. 3 (2011), s. 39-42. ISSN 1313-0226
Grant CEP: GA ČR(CZ) GAP105/10/2305
Výzkumný záměr: CEZ:AV0Z20710524
Klíčová slova: complex inner structure * finite element method * metal foams * modeling of internal structure
Kód oboru RIV: JM - Inženýrské stavitelství
http://mech-ing.com/journal/3-2011.html

In this paper, mechanical behavior of cellular materials is studied by modeling their internal structure and analysis using Finite Element Method (FEM). Alporas aluminium foam was selected as a reference material and the material characteristics were derived from tensile loading using numerical FEM analysis. Internal structure of the foam was modeled by two different methods - using voxel model created on the basis of a series of CT scans and by discretization using Gibson-Ashby's cellular model. Mechanical behavior analysis was performed in both elastic and plastic fields. The beam-only discretization is considered intentionally to investigate its suitability for modeling of closed cell foams and trabecular bone.
Trvalý link: http://hdl.handle.net/11104/0200159