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laws:chab
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CHAB
Description
Chaboche elasto-visco-plastic constitutive model with thermal and cyclic effects for solid elements at constant or variable temperatures with damage computation.
The model is highly adjustable and can be used for very simple laws (elastic, bilinear plasticity) as well as for more complex behaviors (visco-plasticity, isotropic hardening, kinematic hardening, cyclic hardening, …)
Implemented by: Hélène Morch, 2016-2019
Files
Prepro: LCHAB.F
Lagamine: CHAB.F, CHABDAM.F
Availability
| Plane stress state | NO |
| Plane strain state | NO |
| Axisymmetric state | NO |
| 3D state | YES |
| Generalized plane state | NO |
Input file
| Parameters defining the type of constitutive law (2I5, 60A1) | |
|---|---|
| IL | Law number |
| ITYPE | 271 |
| COMMENT | Any comment (up to 60 characters) that will be reproduced on the output listing |
| Integer parameters (9I5) | |
| NTEMP | number of temperatures at which material data is given |
| IANISOTH | = 1 if effect of maximum temperature in the loading history taken into account |
| = 0 else | |
| MAXITER | Maximum number of iterations for Newton-Raphson convergence (default = 25) |
| NAF | Number of Armstrong-Fredericks equations used to define the back-stress X (minimum value=1) |
| NAFY | Number of Armstrong-Fredericks equations taking into account evolution of the mean stress |
| NAFcyc | Number of Armstrong-Fredericks equations taking into account cyclic hardening |
| NINTV | number of time sub-steps in the material law |
| IDAM | = 1 for isotropic uncoupled damage computation |
| = 2 for isotropic coupled damage computation | |
| = 0 for no damage computation | |
| IARRH | = 1 expression of static recovery parameters using Arrhenius law |
| = 2 expression of all parameters as exponential function of temperature | |
| = 0 parameters are interpolated linearly between to defined temperatures | |
| ILCF | = 1 computation of stress amplitude for cyclic loading (for Optim) |
laws/chab.1551695234.txt.gz · Last modified: 2020/08/25 15:34 (external edit)
