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Mechanical Properties Analysis on a Novel Negative Poisson's Ratio Voronoi Foam‐Filled Corrugated Tube Under Impact Loading
Author(s) -
Shen Guoyang,
Wang Xin,
Li Dong
Publication year - 2021
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.202100128
Subject(s) - isotropy , voronoi diagram , materials science , poisson's ratio , poisson distribution , tube (container) , composite material , core (optical fiber) , structural engineering , geometry , mathematics , physics , optics , engineering , statistics
A novel negative Poisson's ratio (NPR) foam‐filled corrugated tube, made up of a corrugated tube and NPR isotropic foam core, is established by the finite element method. The 3D NPR isotropic foam core is achieved by using the triaxial compression method on a cubic Voronoi model, which is created based on the Voronoi tessellation technique. The triaxial compression ratio is defined as η . The Poisson's ratio of Voronoi foam decreases sharply and then increases gradually with an increasing η . A minimum Poisson's ratio, −0.076, is obtained when η = 0.2. Moreover, the Voronoi foam‐filled corrugated tube with minimum Poisson's ratio foam core exhibits the highest energy absorption capacity, which is 10.8% higher than that of the Voronoi foam‐filled corrugated tubes with uncompressed foam core.