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Shock and Vibration
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Shock and Vibration
/
2018
/
Article
/
Tab 2
/
Research Article
Investigation on the Band Gap and Negative Properties of Concentric Ring Acoustic Metamaterial
Table 2
Mass densities and elastic constants of the materials.
Materials
Epoxy
Si-rubber
Steel
Mass density,
(kg/m
3
)
1180
1300
7780
Young’s modulus,
(MPa)
Shear modulus,
(MPa)