doc:user:elements:volumes:iso_hypo_materials
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Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
doc:user:elements:volumes:iso_hypo_materials [2016/03/30 15:23] – external edit 127.0.0.1 | doc:user:elements:volumes:iso_hypo_materials [2022/07/14 11:04] – papeleux | ||
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Line 17: | Line 17: | ||
| Young' | | Young' | ||
| Poisson Ratio | '' | | Poisson Ratio | '' | ||
+ | | Material Stiffness (0 : Ana - 1 : Num) | '' | ||
+ | | (only if element Stiffness == STIFF_ANALYTIC) | ||
| Objectivity Method \\ (Jaumann = 0, GreenNaghdi = 1) | '' | | Objectivity Method \\ (Jaumann = 0, GreenNaghdi = 1) | '' | ||
| Orthotropic axis | | Orthotropic axis | ||
Line 64: | Line 66: | ||
\begin{cases} | \begin{cases} | ||
p^{1} = p^{0} + 3K {\Delta\epsilon}_{ii} \\ | p^{1} = p^{0} + 3K {\Delta\epsilon}_{ii} \\ | ||
- | s^{1}_{ij} | + | s^{1}_{ij} |
\end{cases} | \end{cases} | ||
$$ | $$ | ||
Line 86: | Line 88: | ||
The GeneralizedMaxwell viscoelastic model result in adding of up to now, maximum 2 visco-elastic Maxwell branches to the elastic material. The similar spring/ | The GeneralizedMaxwell viscoelastic model result in adding of up to now, maximum 2 visco-elastic Maxwell branches to the elastic material. The similar spring/ | ||
- | {{ : | + | {{ : |
Defining Maxwell viscous parameters from materials data (for each Maxwell branch): | Defining Maxwell viscous parameters from materials data (for each Maxwell branch): | ||
Line 105: | Line 107: | ||
\begin{cases} | \begin{cases} | ||
p^{1} &= p^{0} + 3K {\Delta\epsilon}_{ii} \\ | p^{1} &= p^{0} + 3K {\Delta\epsilon}_{ii} \\ | ||
- | \underline{s}^{1} | + | \underline{s}^{1} |
\end{cases} | \end{cases} | ||
$$ | $$ | ||
+ | Stresses in each branch are computed using : | ||
$$ | $$ | ||
\begin{cases} | \begin{cases} | ||
- | \underline{s}^{1}_{M1} &= e^{(\frac{-\Delta t}{\tau_{1}})} \underline{s}^{0}_{M1} + \Gamma_{1} (1-e^{\frac{-\Delta t}{\tau_{1}}}) \frac{\tau_{1}}{\Delta t} 2G {\Delta\underline{\epsilon}} \\ | + | \underline{s}_{E}^{1} |
- | \underline{s}^{1}_{M2} &= e^{(\frac{-\Delta t}{\tau_{2}})} \underline{s}^{0}_{M2} + \Gamma_{2} (1-e^{\frac{-\Delta t}{\tau_{2}}}) \frac{\tau_{2}}{\Delta t} 2G {\Delta\underline{\epsilon}} \\ | + | \underline{s}^{1}_{M1} &= e^{(\frac{-\Delta t}{\tau_{1}})} \underline{s}^{0}_{M1} + \Gamma_{1} (1-e^{\frac{-\Delta t}{\tau_{1}}}) \frac{\tau_{1}}{\Delta t} 2G {\Delta\hat{\underline{\epsilon}}} \\ |
+ | \underline{s}^{1}_{M2} &= e^{(\frac{-\Delta t}{\tau_{2}})} \underline{s}^{0}_{M2} + \Gamma_{2} (1-e^{\frac{-\Delta t}{\tau_{2}}}) \frac{\tau_{2}}{\Delta t} 2G {\Delta\hat{\underline{\epsilon}}} \\ | ||
\end{cases} | \end{cases} | ||
$$ | $$ | ||
Line 349: | Line 352: | ||
$$ | $$ | ||
- | f=\dfrac{\overline{\sigma}}{1-D}-\sigma_{yield}=0 | + | f=\dfrac{\overline{\sigma}}{1-h\cdot |
$$ | $$ | ||
- | where $ \overline{\sigma} $ is the equivalent stress computed as a function of [[doc: | + | where $ \overline{\sigma} $ is the equivalent stress computed as a function of [[doc: |
+ | $$ | ||
+ | h = \left\{ | ||
+ | | ||
+ | \text{DAMAGE_MCCE} & | ||
+ | 1.0 & | ||
+ | | ||
+ | | ||
+ | $$ | ||
The evolution law coupled with plasticity can be integrated three ways depending on the parameter '' | The evolution law coupled with plasticity can be integrated three ways depending on the parameter '' | ||
Line 370: | Line 381: | ||
| Initial damage | | Initial damage | ||
| Integration method | | Integration method | ||
+ | | Micro-Crack Closure Effect parameter (=1.0 by default) | ||
===== ContinuousAnisoDamageEvpIsoHHypoMaterial ===== | ===== ContinuousAnisoDamageEvpIsoHHypoMaterial ===== |
doc/user/elements/volumes/iso_hypo_materials.txt · Last modified: 2022/07/14 12:41 by papeleux