# Hyperelastic behavior of rubberlike materials

 The hyperelastic material model: is isotropic and nonlinear; is valid for materials that exhibit instantaneous elastic response up to large strains (such as rubber, solid propellant, or other elastomeric materials); and requires that geometric nonlinearity be accounted for during the analysis step (General and perturbation procedures), since it is intended for finite-strain applications. The following topics are discussed:
 Related Topics About the material library Elastic behavior Mullins effect Permanent set in rubberlike materials In Other Guides *HYPERELASTIC *UNIAXIAL TEST DATA *BIAXIAL TEST DATA *PLANAR TEST DATA *VOLUMETRIC TEST DATA *MULLINS EFFECT Creating an isotropic hyperelastic material model

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