The Neo-Hookean material model is a hyperelastic material model and is available for 2D, brick, and tetrahedral elements. The material properties are listed below.
Click the Curve Fit button on the Element Material Specification dialog to use the Curve Fitting routine. This routine calculates the material constants using measured stress-strain data.
The potential function of the Neo-Hookean material is as follows:
where
- C10 and K are coefficients of the Neo-Hookean material model
, the first deviatoric strain invariant 
, the deviatoric stretches 
, the principal stretches 
, the total volume ratio
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Note:
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The initial shear modulus, µ0 , can be deduced by µ0 = 2C10 . K = κ0 , the bulk modulus. |