The number of elasticity constants is reduced by material symmetries. There are only two constants for isotropic materials. A distinction is then made between :
the Young's modulusE such that in a uniaxial test :
σ = E ε
the Poisson's ratioν such that in a uniaxial test :
ν = – ε
2
/ε
1
ratio of radial strain ε
2
...
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Viscoelastic properties: determination. Damping capacity
