Solid Mechanics Material Properties: Nonlinear Structural Materials Module These material property groups for material models in solid mechanics using the Nonlinear Structural Materials Module (including their associated physical properties) can be added to models from the Material window. Table 9-12: Hyperelastic and Elastoplastic Material Properties Property Group and Property Name/Variable SI Unit Elastoplastic material Hardening function sigmagh Pa Hill’s coefficients Hillcoefficients (m2·s4)/kg2 Initial tensile and shear yield stresses ys N/m2 Initial yield stress sigmags Pa Isotropic tangent modulus Et Pa Kinematic tangent modulus Ek Pa Hyperelastic Materials Arruda-Boyce Macroscopic shear modulus mu0 N/m2 Number of segments Nseg 1 Blatz-Ko Model parameters phiBK 1 Model parameters betaBK 1 Shear modulus muBK Pa Gao Model parameters aG Pa Model parameters nG 1 Gent Macroscopic shear modulus muG Pa Model parameters jmG 1 Mooney-Rivlin Model parameters C01, C02, C03, C10, C11, C12, C20, C21, C30 Pa Murnaghan The Murnaghan node adds five model parameters. The model is based on strain invariants and is typically used in acoustoelasticity. Murnaghan third-order elastic moduli l Pa Murnaghan third-order elastic moduli m Pa Murnaghan third-order elastic moduli n Pa Lamé parameter λ lambLame Pa Lamé parameter μ muLame Pa Varga Model parameters c1VA Pa Model parameters c2VA Pa Yeoh Model parameters c1YE Pa Model parameters c2YE Pa Model parameters c3YE Pa