Answer:
For the calculation of members, this Poisson's ratio is irrelevant, as it is only used for surfaces and solids.
In an isotropic material model, Poisson's ratio is firmly coupled with the modulus of elasticity and the shear modulus. If Poisson's ratio becomes too large and exceeds the limits, isotropic material behavior is no longer present. To avoid this problem, we recommend creating an orthotropic material for surfaces and solids. For members, it is still necessary to select the isotropic material model. In this case, you can ignore the message.
