Hi,
I have uniaxial test data of compressible material with Poisson's ratio 0.3 and I am trying to perform fitting with hyperelastic polynomial model(N=2) in MATLAB. In order to understand formulas, I referred to ABAQUS documentation, which says that in uniaxial test, materials are assumed to be incompressible. However, when actually evaluating material model in ABAQUS, Poisson's ratio is considered(I tried to set it to 0.5 and compares the results of the fit). Could you give a hint, how ABAQUS uses this quantity in its computation in uniaxial test mode?
Link to the mentioned reference:
Section 4.6.2
I have uniaxial test data of compressible material with Poisson's ratio 0.3 and I am trying to perform fitting with hyperelastic polynomial model(N=2) in MATLAB. In order to understand formulas, I referred to ABAQUS documentation, which says that in uniaxial test, materials are assumed to be incompressible. However, when actually evaluating material model in ABAQUS, Poisson's ratio is considered(I tried to set it to 0.5 and compares the results of the fit). Could you give a hint, how ABAQUS uses this quantity in its computation in uniaxial test mode?
Link to the mentioned reference:
Section 4.6.2