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6.7 - Poisson's ratio the ratio of lateral strain to...

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Poisson’s ratio, ν – the ratio of lateral strain to longitudinal strain = - ε y / ε x = - ε z / ε x The ideal ratio (for no volume change) = 0.5 The average value for materials is approximately 0.3 Isotropic materials have the same Poisson’s ratio for all lateral directions. for isotropic materials and small values of strain, E, G and
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