hyperviscoelastic#
Description#
This behavior is a general Hyper-viscoelastic form with both shear and
volumetric recovery components. The model is based on the discussions
from Simo and Hughs [M3]. The model uses the same
hyperelastic potential components as in the hyper_elastic
behavior.
Also any number of shear and volumetric terms can be added to the
model.
Syntax#
***behavior hyperviscoelastic
[ **thermal_strain
<THERMAL_STRAIN> ]
[ **hyperelasticity
<HYPERELASTIC_LAW> ]
[ **hyperelasticity
<ISOTROPIC_HYPERELASTIC_LAW> ]
[ **model_coefficients
]
...
**-
level commands for hyper law
Example#
The following example comes from the validation tests. More examples can
be found in test/Viscoelastic_test/INP
***behavior hyperviscoelastic
**hyperelasticity logarithmic
**elasticity isotropic
young 2.8125
poisson 0.40625
**shear
tau 1.0
omega 0.4
**shear
tau 10.0
omega 0.4
**volumic
tau 3.
omega 0.5
***return