36edb4dd9f
introduced keyword elasticity in material.config
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added constitutive_TandItsTangent and special version constitutive_hooke_TandItsTangent
those are however not yet used and need to be tested
2012-03-14 16:16:11 +00:00
c2f5cebacb
simplified analytic jacobian calculation. removed Lpfrac, time_sensitive. introduced rate_sensitivity flag when calling crystallite_stressAndItsTangent that is currently set to .false. and is to be set according to which dPdF the FE solver is asking for
2012-03-14 13:56:50 +00:00
c9ed989dad
replaced keyword constitution with plasticity in preparation of upcomming generalized elasticity
2012-03-12 14:09:37 +00:00
bd9667bd4b
added new, flexible debugging scheme.
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now all modules have their own debug specification.
compiles and runs, I hope nothing is broken
did a lot of polishing
2012-03-08 20:25:28 +00:00
17e9698659
added time_sensitive flag to ignore or add time sensitive component to analytic jacobian (should be close to perturbed jacobian when ignored)
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now uses sub_dt for analytic jacobian calculations
bug fixes
2012-03-01 19:42:43 +00:00
211f66a728
added elastic stiffness matrix as crystallite output
2012-03-01 13:06:09 +00:00
1042ac018f
output values used for Lp_frac and analyticJaco
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improved comment for Lp_frac on numerics.config
2012-02-24 08:21:18 +00:00
a98832100f
introduced itmin parameter for spectral code for defining minimum number of cycles
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removed simplified_algorthim flag because the basic scheme using the polarization field will not be implemented
introduced divergence_correction flag for making divergence criterion resolution-independent (still experimental and not set by default)
corrected output and restart frequency (now modulo on incs of current load case)
2012-02-23 16:43:17 +00:00
989a2b2d39
added default entries for Lp_frac and analyticJaco
2012-02-23 10:53:15 +00:00
8dc6e256c0
choose textures and phases of example materials according to what the labels suggest
2012-02-21 13:16:59 +00:00
5ddade27fc
changed Peierls stress to more realistic values for fcc
2012-02-03 13:12:45 +00:00
d62eddc0cd
corrected kinetics law and changed parameters. For solid solution hardening there are 3 parameters: the activation energy, the concentration of obstacles that determines the activation length and meanfreepath, and the obstacle size that determines the activation volume. For the Peierls mechanism there is: the width of doublekinks that determines the activation volume and the Peierls stress for edge and screw.
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Still testing needed to check whether the current formulation makes sense or not.
2012-02-03 12:50:54 +00:00
df931890e0
corrected typos
2012-01-26 12:50:04 +00:00
5a658d1b82
dislocation velocity output for each dislocation type (edge+,edge-,screw+,screw-)
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for fcc constitutive_nonlocal_kinetics is called only once and the result is used for each dislocation type, for all other lattice structures we have one call for each dislocation type
2012-01-26 07:43:36 +00:00
e5407894b5
Reworked kinetics. Now there is a universal law which can be used for both fcc and bcc (and probably even hcp). It mainly consists of an athermal forest cutting part , solid solution and peierls as thermally activated processes, and viscous glide. Therefore, lots of new parameters in the material.config. Not sure yet if the values make sense though.
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Also renamed some of the old parameters.
Unknown constitutive output raises error.
2012-01-25 17:04:37 +00:00
4980f57fd5
added total Green-Lagrange strain to crystallite outputs
2012-01-20 10:25:35 +00:00
8739b9522e
dislocation stress does not add to stress field anymore, but is only available as constitutive output for purposes of postprocessing. instead, we now use a backstress term (which is added to the resolved shear stress) that depends on the gradient of excess density on the same slip system.
2012-01-17 10:26:57 +00:00
515986c4d6
renamed w0 and w0_slip to a and a_slip
2011-11-23 14:48:39 +00:00
5ef73e164a
restructured algorithm: moved into loop to reallocate fields and replan FFTW in case resolution changes during runtime ==> regridding
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introduced parameters for selective debugging of spectral code and partly introduced the advanced divergence calculation again which is controlled by debug.config
added switch in numerics to control divergence behavior (uncorrected and corrected by phenomenological factor)
added precision directive to all values I found
2011-11-15 17:54:18 +00:00
7033e84fc7
new outputs "accumulatedshear", "velocity_edge", and "velocity_screw" (the latter two replace the output "dislocationvelocity")
2011-11-09 09:22:52 +00:00
58917b5abe
corrected error messages
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you can now switch of shear banding by seting sb_velocity to zero
stacking fault energy parameters are now read from material.config
2011-09-26 09:55:08 +00:00
9d091bdc3f
added parameters for shear band model
2011-09-14 13:35:28 +00:00
f527bdcc78
changed standard values according to numerics.f90
2011-08-30 11:21:39 +00:00
2e9c605571
somehow forgot to move the numerics.config into the config subdir...
2011-07-21 08:40:45 +00:00
9a64f3dd85
* comments are now recognized by IO even when they do not appear at the beginning of the line
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* no need for the zero entries in the material.config anymore
2011-05-30 09:09:19 +00:00
bbf75f3fb5
cannot omit entries for second to fourth slip system family, though they are zero
2011-05-30 07:53:41 +00:00
08d39342e4
reworked restarting for compatibility with abaqus (not yet fully working)
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added new orientation feature for direct simulation:
component type (random) asigns random orientation to an entire grain
2011-05-28 09:44:43 +00:00
a910c469df
update of nonlocal material parameters
2011-05-20 08:11:22 +00:00
1baae024cb
added two more <crystallite> examples
2011-05-13 16:54:08 +00:00
d366a53f4e
probably installation is a better place for the abq.env file
2011-05-11 17:10:45 +00:00
e5a2d829b0
new substructure with 'include' and 'config' directories
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renaming of mpie_... to DAMASK for main usersubroutines
extension of element outputs from 5 to 8 digits (FFT!!!)
2011-05-11 16:38:45 +00:00
Franz Roters