Difference between hyperelastic and viscoelastic material
Answers
Viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation. Synthetic polymers, wood, and human tissue, as well as metals at high temperature, display significant viscoelastic effects. In some applications, even a small viscoelastic response can be significant.
have a doubt regarding the Hyperelastic and Viscoelastic material modelling in ANSYS using Mooney-Rivlin material constants.
ANSYS theory manual says that for large deformation and large strains, the material modelling (i.e. constitutive behaviour) is same for hyperelastic and viscoelastic. Is it so?
Generally, Mooney-Rivlin material constants are used to model Hyperelastic behaviour (rubber-like materials).
But can I use Mooney-Rivlin material constants, which we get from curve fitting the test data, to also model a viscoelastic material which has large deformation and large strain (10-20%)?