Converting Young's Modulus to C10

[ryan]

Hie Jorgen,

You commented that for small deformation(strain),Neo-Hookean model, it can be assumed that
E= 3G
and
G=2C10
hence,
C10= E/6

E: Young's Modulus
G: Shear Modulus

Can you please define the so called small deformation. e.g strain<15% or <100%? so that the equation above is valid?

If the deformation is large and the material manufacturer provided me only the Young's modulus and Poisson's ratio, is there anyway or formula i can apply to obtain the C10 coeeficient for NeoHookean model?

Thank you
Regards,
Ryan

[Jorgen]

You can still use that formula for large deformations, but if all you know are E and nu, then you really do not know the large-strain response and the Neo-Hookean model will be an approximation of the response.

-Jorgen