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Volume 23 (2024)
Volume 23, Issue 2
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International Journal of Materials Engineering and Technology
International Journal of Materials Engineering and Technology
Volume 3, Issue 1, Pages 33 - 51 (January 2010)
SYMMETRY EFFECTS ON ANALYTICAL MODELS FOR DEFINING THE MECHANICAL BEHAVIOR OF CLOSED AND OPEN-CELL AL FOAMS
I. Ch. Konstantinidis and S. A. Tsipas
Abstract:
Symmetry plays a major role in analytical modeling creation as symmetrical conditions simplify considerably the mechanical property evaluation. In the current analysis, symmetrical geometries of cells are used in order to define the mechanical behavior of closed and open-cell Al foams. Specifically, two 3D analytical models are considered for the determination of mechanical properties of Al foams under compression load. The first model refers to closed-cell foams and consists of ellipsoid cells uniformly arranged in a rectangular plate, whereas the second one is related to open-cell foams and consists of a simple unit cubic cell. The closed-cell model produces much higher values of the plateau stress compared to experimental and theoretical results of other proposed models, contrary to the open-cell model which yields quite similar values to experimental and theoretical models for a long range of cell sizes. Both models are solved by the finite element method using a commercial program. Finally, it is verified that symmetry can be used successfully for mechanical property evaluation of open-cell Al foams with cell sizes of range 0.5-3 mm and relative densities of range 0.05-0.11.
Keywords and phrases:
symmetry, closed-cell, open-cell, Al foams, unit model, ellipsoid cells, mechanical properties.
Communicated by M. Misbahul Amin
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P-ISSN: 0975-0444
E-ISSN: 2584-0339
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