adtzlr / matadi

Material Definition with Automatic Differentiation
GNU General Public License v3.0
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Change Ogden material #104

Closed adtzlr closed 2 years ago

adtzlr commented 2 years ago

There are two versions of the Ogden material formulation, one with mu / alpha and one with 2 mu / alpha^2. Change to the second version due automatic consistency with linear elasticity (mu is always equal to the initial shear modulus)