Example 5
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Given:
An isotropic material with Young's modulus and Poisson's ration .
Find:
The compliance matrix of the material in terms of the Young's modulus and Poisson's ratio.
Solution
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The strain is related to the stress via the compliance matrix by
the equation
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For an isotropic material
-
Therefore,
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In engineering notation,
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Converting into matrix notation,
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We may also write the above equation as
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where is the shear modulus.