Overall ultimate yield surface of periodic tetrakaidecahedral lattice with non-symmetric material distribution

Overall ultimate yield surface of periodic tetrakaidecahedral lattice with non-symmetric material distribution

A rigorous method for the homogenization of general elastoplastic periodic lattices is applied to 3D cellular solids. Tetrakaidecahedral unit cell problems are solved to determine the overall yield surface of foams. Non-symmetric material distribution is introduced and new results concerning the inf...

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Bibliographic Details
Published in:Journal of materials science Vol. 40; no. 22; pp. 5883 - 5892
Main Authors: Florence, Céline, Sab, Karam
Format: Journal Article
Language:English
Published: New York Springer Nature B.V 01-11-2005
Subjects:
Braking systems
Elastoplasticity
Foams
Homogenizing
Lattices
Materials science
Stress concentration
Symmetry
Three dimensional
Unit cell
Yield strength
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Summary:A rigorous method for the homogenization of general elastoplastic periodic lattices is applied to 3D cellular solids. Tetrakaidecahedral unit cell problems are solved to determine the overall yield surface of foams. Non-symmetric material distribution is introduced and new results concerning the influence of this type of defect are obtained. They show that non-uniform material distribution increases the overall strength, except in particular loading directions and that non-symmetry has no significant influence on the yield surface.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-005-5023-8