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A novel 3D composite structure with tunable Poisson's ratio and stiffness
Author(s) -
Hou Xiaonan,
Hu Hong
Publication year - 2015
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201552132
Subject(s) - materials science , composite number , composite material , ultimate tensile strength , stiffness , finite element method , poisson's ratio , stack (abstract data type) , deformation (meteorology) , parametric statistics , poisson distribution , structural engineering , mathematics , computer science , statistics , engineering , programming language
A composite structure with tunable mechanical properties is introduced. The composite consists of matrix material and a stack of inclusions. The specific hollow re‐entrant shell inclusions could exhibit ‘expansion effect’ and ‘closure effect’ as responses to tensile and compressive loadings, respectively. Due to the special deformation mechanism of the inclusions, the global structure exhibits unusual properties over a wide range of applied deformations. The overall Poisson's ratio of the composite is significantly reduced comparing with its constituents, and an overall hardening effect is achieved. Moreover, according to the results of a parametric finite element analysis, the specific properties of this composite structure can be tailored by controlling the geometry features and density of the inclusions.