Contents Orthotropic Constitutive Models | Print page 3.3. Strength ModelsThree strength models are available for orthotropic materials in Autodyn-2D and -3D, as follows:3.3.1. Elastic3.3.2. VonMises3.3.3. Orthotropic Yield Strength and Hardening Model « 3.2.2. Polynomial Equation of State 3.3.1. Elastic »