doc:user:elements:volumes:isohard
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Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
doc:user:elements:volumes:isohard [2014/09/30 13:45] – joris | doc:user:elements:volumes:isohard [2018/06/19 10:46] – [LinearIsotropicHardening] cerquaglia | ||
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|Initial yield stress $\sigma^{el}$ | |Initial yield stress $\sigma^{el}$ | ||
|Plastic Modulus $h $ | '' | |Plastic Modulus $h $ | '' | ||
+ | |||
+ | **NB**: the plastic modulus is defined as $h = \frac{E E_T}{E - E_T} $, where $E$ is the Young' | ||
===== SaturatedIsotropicHardening ===== | ===== SaturatedIsotropicHardening ===== | ||
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|Initial yield stress $\sigma^{el}$ | |Initial yield stress $\sigma^{el}$ | ||
|$Q_1$ | |$Q_1$ | ||
- | |$\xi_1$ | + | |$\xi_1$ |
|$Q_2$ | |$Q_2$ | ||
- | |$\xi_2$ | + | |$\xi_2$ |
===== RambergOsgoodIsotropicHardening ===== | ===== RambergOsgoodIsotropicHardening ===== | ||
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=== Description === | === Description === | ||
- | Krupkowsky | + | Krupkowski |
$$ | $$ | ||
- | \sigma_{vm} = K \left(\bar{\varepsilon}^{vp}_ {0} + \bar{\varepsilon}^{vp}\right)^{n} | + | \sigma_{vm} = K \left(\bar{\varepsilon}^{vp}_{0} + \bar{\varepsilon}^{vp}\right)^{n} |
$$ | $$ | ||
=== Parameters === | === Parameters === | ||
- | ^ Name ^ Metafor Code ^ Dependency | + | ^ Name |
- | |Initial equivalent plastic strain | '' | + | | Initial equivalent plastic strain |
- | |$K $ | '' | + | | strength coefficient |
- | |$n $ | '' | + | | strain hardening exponent |
===== Nl8pIsotropicHardening ===== | ===== Nl8pIsotropicHardening ===== | ||
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$$ | $$ | ||
- | \begin {eqnarray*} | + | \sigma_{vm} = \left(P_2-P_1\right) \left(1-\exp\left(-P_3\bar{\varepsilon}^{vp}\right)\right) + P_4\left(\bar{\varepsilon}^{vp}\right)^{P_5} |
- | \sigma_{vm} | + | $$ |
- | & & + \, P_1\left(1+P_6\,\bar{\varepsilon}^{vp}\right)^{P_7} | + | $$ |
- | \end{eqnarray*} | + | + P_1\left(1+P_6\bar{\varepsilon}^{vp}\right)^{P_7} + P_8\bar{\varepsilon}^{vp} |
$$ | $$ | ||
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^ Name ^ Metafor Code ^ Dependency | ^ Name ^ Metafor Code ^ Dependency | ||
- | |Initial yield stress $\sigma^{el}$ | + | |Initial yield stress $\sigma^{el}$ |
- | A [[doc: | + | An [[doc: |
doc/user/elements/volumes/isohard.txt · Last modified: 2020/07/08 10:16 by papeleux