OOF2: The Manual
| Mechanical:Viscosity:Isotropic | ||
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6.4.1. Material Properties |  |
Name
Mechanical:Viscosity:Isotropic — Isotropic linear viscosity.
Details
- Property Category: ViscoElasticity
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Parameters:
gijkl- Type: An object of the
IsotropicRank4Tensorclass.
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Fields:
Displacement -
Fluxes:
Stress
Discussion
Isotropic viscoelasticity is similar to isotropic elasticity, except that the modulus multiplies the first time derivative of the strain instead of the strain (6.2) itself. It makes a contribution of
![\[ g_{ijkl} \dot\epsilon_{kl} \]](equations/6.4.1-eq-53.gif)
to the Stress, where
![\[ \dot\epsilon_{ij} = \frac12\left(\frac{\partial \dot u_i}{\partial x_j}
+ \frac{\partial \dot u_j}{\partial x_i}\right). \]](equations/6.4.1-eq-54.gif)
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| Mechanical:MassDensity:ConstantMassDensity |  |
Mechanical:Damping:Isotropic |