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# What is the Relation Between Volumetric Strain and Longitudinal strain

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The Relation Between Volumetric Strain and Longitudinal strain is given by

$\frac{d V}{V}= (1-2 \sigma) \frac{d L}{L}$

Where

$\frac{d V}{V}= Volumetric \ \ Strain$

$\frac{d L}{L}= Longitudinal \ \ Strain$

$\sigma = Poisson's \ \ ratio$

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