The elasticity matrix as far as I know defines the effective Young’s Modulus in various directions for an an-isotropic crystal so essentially yes but only for anisotropic materials.

]]>Is stiffness the same as elasticity matrix?

I have been trying to obtain the elasticity matrix of PMMA from the internet but I could not obtain it. I realized that the only way for me to obtain it is by calculating it using COMSOL. But I just want to know is this blog talking about elasticity matrix since it is stiffness?

Regards,

Badri