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# calculating Young's modulus

## calculating Young's modulus

(OP)
Hi,

For a hyperelastic Neo-Hookean model with C10 as 0.3448 and D1 as 0.3, I got Young's modulus of 2.0688 MPa with the formula C10=E/6. Is this correct? If not, how can we calculate Young's modulus from C10 and D1?

Thank you.

### RE: calculating Young's modulus

You should think in terms of (initial) bulk and shear moduli instead of Young's modulus which only makes sense in the infinitesimal sense (i.e., "small" strains); Young's modulus has no meaning in finite elasticity (i.e., "large" strains). Analysis User's Guide discusses this in some detail. If that is not sufficient, grab a book on continuum tissue mechanics; Y.C. Fung/Gerhard Holzapfel/Jay Humphrey have written excellent texts.

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### RE: calculating Young's modulus

(OP)
Yes, I will go through it. Thank you for the recommendation.

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