c775edaa6d
better avoid initialization of residuum_old with huge, since it posed problems in Abaqus
2012-11-08 13:26:22 +00:00
dad9922f54
fixed bug in crystallite_FPI: stateDamper always has to be defined for each grain
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added some OMP FLUSH statements were necessary
replaced openmp do by forall construct where possible; this is much safer and perhaps even as fast for small loops
2012-11-07 15:43:29 +00:00
bbcffa668b
some small changes in including PETSc *.h90 files to prevent warnings.
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It seems that a bug in old gfortran 4.5.0 causes the problems, at least with 4.7.3 it seems to work after fixing the bugs in IO.f90
2012-11-07 13:11:41 +00:00
9b99825ac6
preventing array index out of bounds in case of empty line, removed to goto statements
2012-11-07 09:31:46 +00:00
5214b93342
fixed bug when reading in geometry for spectral solver
2012-11-06 17:16:01 +00:00
3ada4897fb
reordered PETSc initialization (now first part done in interface, setting of parameters done in numerics), removed unnecessary includes for PETSc
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still not running with gfortran, use at own risk!
2012-11-06 16:00:51 +00:00
a86d528a4a
replaced call flush(6) by flush(6), slightly improved formating for output of gfortran version
2012-11-06 15:50:20 +00:00
5b6baa7c0d
introduced distinction between ip coordinates and cell center coordinates; the former can be globally calculated by subroutine mesh_build_ipCoordinates, the latter locally by the function mesh_cellCenterCoordinates; renamed mesh_ipCenterOfGravity to mesh_ipCordinates
2012-11-06 14:37:13 +00:00
bb033c5fe7
Simplified algorithm of crystallite_integrateStress while preserving (almost) same functionality.
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Removed "leapfrogging" (increase of step for next guess, when last guess was ok); Replaced Armijo rule testing for step size by simple check if the residuum got better, since the former virtually did not have any effect; consistently using the 2-norm of the residuum rather than infinity-norm for the convergence check throughout the function
2012-11-06 12:35:45 +00:00
639d6e0655
inserted missing flush(crystallite_todo) in parallel section; might have caused trouble in parallel calculations before
2012-11-05 14:45:52 +00:00
086fe138b1
substituted matrix inversion to solve equation by direct solution routine from LAPACK
2012-10-31 09:56:26 +00:00
55dc286be2
corrected limit for upper stable dipole distance; fixed a bug in the postResults where division by zero might happen
2012-10-29 13:02:01 +00:00
f666f8dcf3
added possibility to scale the plastic shearrate by the ratio of mobile to total density; keyword in material.config is "deadZone"
2012-10-29 12:49:28 +00:00
ca596bc7af
error messages are now printed, added svn properties
2012-10-25 09:16:17 +00:00
93cc466749
third entry in mesh_ipNeighborhood stores the neighbor_index that points from each neighbor back to the central ip; needed in nonlocal model
2012-10-24 14:03:02 +00:00
13b55275b1
documented utilities and structured, worked on the restart capabilities of the new basic solver
2012-10-24 11:31:40 +00:00
5ad0eda1b6
switched saturation behavior!!
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was \dot s_alpha = (1-s_alpha/s_inf)^a h_alphabeta \dot gamma_beta
now \dot s_alpha = h_alphabeta (1-s_beta/s_inf)^a \dot gamma_beta
current form is consistent with the genmat implementation (and appears to make more physical sense). Kalidindi_etal1992 suggested this form, but altered it to the alpha-one in Bachu+Kalidindi1998... By now, it seems that some groups use alpha, others beta approach.
introduced two new absolute tolerance values for "shears" and "twinFrac" (default 1e-6).
2012-10-22 14:55:07 +00:00
2be331b74d
In crystallite for state integrators 2 and 3: now that "stateJump" is called before integrating dotState, we have to do state = state + dotState *dt instead of state = subState0 + dotState * dt; otherwise the deltaState is lost
2012-10-22 13:34:15 +00:00
0980920b66
In crystallite: for state integrators 2 and 3 the deltaState always has to be done at the beginning of the integration, not at the end; otherwise the stiffness calculation can be completely wrong, when the state is changed after the stress integration for the central solution.
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Also changed some debugging levels in crystallite and mainly in constitutive_nonlocal
2012-10-22 07:59:35 +00:00
3ecaa9e371
modified multiplication term in order to mimic a discrete distribution of dislocation sources; namely, at high resolution, when there is (on average) less than one source per integration point, a random generator decides whether there is a source in the finite volume or not; if there is one, then the multiplication turns independent of the density and depends only on the velocity/volume times a scalar factor; recovers density*velocity/lambda for large finite volumes
2012-10-19 11:40:17 +00:00
36676029e1
for state integrator 2 (explicit euler) and 3 (adaptive 2nd order euler): don't do any state evolution during stiffness perturbation, but only stress integration, since for those cases the state is not restored after every perturbation step
2012-10-19 11:20:31 +00:00
b9f97ba5da
unified naming scheme, fixed a bug in the new basic scheme, and added a statistic file similar to abaqus to store the information on needed cut backs and iterations for each inc
2012-10-19 08:44:21 +00:00
6230dacbac
only first broken ip signals "terminally ill"
2012-10-18 13:48:06 +00:00
4a6e08bb69
changed keyword in spectral geometry file for multiplication of entries from "copies of" to "of"
2012-10-18 10:17:16 +00:00
dd5f453994
mainly cosmetics. added some comments. changed debug levels for some outputs. corrected (probably non-essential) check for NaN in FPI stressIntegrator.
2012-10-18 09:53:26 +00:00
79a5a30a90
removed now obsolete vectorproduct variables st, tt...
2012-10-18 07:25:49 +00:00
5f0440fde3
crystallite_integrateStress now raises an error if Fp becomes NaN
2012-10-17 16:19:42 +00:00
31f20e51da
just to be able to tell about the bug I found in the hex slip systems---which I actually forgot to mention during the last commit---I slipped in a syntax error that now is fixed, too...
2012-10-12 20:31:50 +00:00
05c5ea42d7
prepared loop distributions to hold "over shooters"
2012-10-12 18:00:55 +00:00
82a13af474
tidied up the Schmid matrix calculations.
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added internal check against dilatation in Schmid matrices.
2012-10-12 17:59:50 +00:00
b20c612e25
added error "0" for internal (run time) checks failing
2012-10-12 17:55:23 +00:00
1b2edd7e7d
fixed error in _identity (wrong delta-function)
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added _exp33 for matrix exponential
added trace33 for matrix trace
2012-10-12 17:54:20 +00:00
324dfda5a2
added comments (doxygen conform) to phenopowerlaw, added warning on specifying h0_sliptwin as it has no effect
2012-10-11 14:49:12 +00:00
e4054c116d
fixed problem with gnu compiler: allocation of variables in constitutive_nonlocal_stateInit was not safe when not using any nonlocal constitution
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put header of debugging output in constitutive_init at the start of the function in order to make debugging easier
2012-10-09 12:34:57 +00:00
a84e0529c3
make correction of hardening coefficients thread safe
2012-10-05 16:05:51 +00:00
40a2e652e7
introduced material parameter "linetension", which indicates how strong the effect of the line tension on the hardening coefficients is
2012-10-05 14:42:41 +00:00
7cc6108a04
hardening coefficients for fcc are density dependent (line tension effect, Devincre, Kubin, Hoc; 2006; Physical analyses of crystal plasticity by DD simulations)
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fixed bug with thermal annihilation producing negative density in case of very small dipole density and high climb velocity
2012-10-04 18:08:40 +00:00
80465c0b49
moved option for UTF-8 encoding to spectral interface as this is now called before prec init.
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if UTF-8 encoding is needed for FEM solver (old compilers might not support it), add the same statement to the corresponding interface routine
2012-10-04 14:22:39 +00:00
e2ea3cdff6
again some changes regarding creation of NaN, ieee-conforming way is not in the complilers yet.
2012-10-02 16:53:03 +00:00
bce8012c89
random distribution of initial dislocation density now really independent of meshsize
2012-10-02 15:26:58 +00:00
d5ce49c471
numerics got some protected statements and is now reading in the new keywords for the solver selection in small letters.
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spectral solver got cut back facilities + improved output to screen
2012-10-02 15:26:56 +00:00
91b7883c2a
random distribution of initial dislocation density now independent of mesh size
2012-10-02 13:35:34 +00:00
1502a71f0c
added possibility to start with an initial random distribution of dislocation segments with specific overall density
2012-10-02 12:57:24 +00:00
0bcb8f59db
added doxygen comments, some polishing, added "protected" statements where applicable
2012-10-02 12:53:25 +00:00
6301787df4
moved the the variable cutBack from FEsolving.f90 (where it was not used at all) to the interface routines to make responsibility of cut back control clear
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PLEASE RUN setup_code.py IF YOU DO MARC SIMULATIONS, THE INTERFACE HAS CHANGED
2012-10-02 12:46:58 +00:00
c8b7da432c
set debug_level to be protected as it is read-only for other modules
2012-10-02 09:35:39 +00:00
4c7bcb8df9
modified formated integer output and added error number in case maximum number of cutbacks is reached
2012-10-02 09:30:13 +00:00
9fc46b4950
added /echo/ statements
2012-10-02 08:12:53 +00:00
b99a846503
new scaling feature in numerics (unitlength) did not scale the reference coordinates in the first place; now this is taken care of in mesh.f90, so scaling should work properly
2012-09-25 16:21:58 +00:00
d0fd3c03c5
forgot to check in; belongs to rev 1762
2012-09-24 16:22:25 +00:00
Christoph Kords