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
912277d1ed
substituted the call to the flush subroutine with the intrisic flush(6) function
2012-09-24 12:10:28 +00:00
8336d0705c
new numerics parameter "unitlength" that scales the model size in DAMASK; this enables to use very small models in marc without getting any numerical problems for example with contact which does not seem to work when using very small numbers
2012-09-24 06:13:26 +00:00
b587bffdd5
added some 'protected' statements to variables that shouldn't be changed by other modules
2012-09-22 16:49:41 +00:00
8ed69170c5
corrected wrong warning complaining about FFTW string when DAMASK_NUM_THREADS undefined
2012-09-14 16:39:42 +00:00
1cfc467705
added new cut back parameter for spectral solver and instrumented variables for use with doxygen
2012-09-13 09:48:38 +00:00
b9a2890665
fixed bug in loadcase rotation: when not specifying "deg" the rotation was reset to 0,0,0..!
2012-09-06 14:05:28 +00:00
29023cea3c
minor correction of debugging output
2012-09-05 11:19:46 +00:00
330d71864e
fixed bug with stress BC handling
2012-09-05 08:30:15 +00:00
f153866030
introduced factor to control edge contribution to multiplication;
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dislocation density below a single dislocation per IP considered not significant
2012-09-04 16:56:37 +00:00
22812c9a91
some minor improvement on precision detection: checking only once (in prec and no longer in math and crystallite), added one more 4/8 switch for LAPACK, as there is no single precision FFTW, stopping compilation for spectral method if FLOAT=4
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new function in IO to print integers without leading zeros, implemented it at some places in the new spectral solver (reporting still needs some serious polishing)
updated preprocessing for documentation to handle precision correctly
2012-08-30 20:26:28 +00:00
299d9e6bc4
fixed bug in seed initialization that didn't allow to redo calculations that started with a random seed. Now the whole random seed array is set to one value, previously only the first one was reported and the remaining ones were random
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removed old random function used by halton
2012-08-30 14:58:30 +00:00
d80b45c1d9
added relativistic correction of velocity (maximum velocity given by parameter in material.config); probability of thermal activation in velocity law not allowed to be greater than one.
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output of creation rate for edge jogs now for own system, not collinear.
check for negative densities in dotState now uses absoluteToleranceRho instead of significantRho.
2012-08-30 07:33:13 +00:00
8e3b547cbd
changed numerics.f90 back to the old openmp statement as this doesn't seem to cause the problem and is standard conforming
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corrected typo in constitutive_j2.f90 that might cause abaqus to crash
now running 20 tests of abaqus in order to have a decent statistic about the crash behavior
improved abaqus_v6.env
2012-08-29 16:16:10 +00:00
84e3f94424
added flush for easier debugging
2012-08-29 15:23:43 +00:00
d83150be1b
now capturing "terminallyIll" for basic solution, should end in a automatic cutback of time steps for the spectral solver
2012-08-29 05:50:42 +00:00
3106b8ce0c
corrected definition of integer type for gfortran
2012-08-29 05:19:35 +00:00
d089c12947
abaqus seems to have similar problems with the openmp lib as marc (use module vs. include file), i hope this fixes the crashes
2012-08-28 19:48:38 +00:00
5e9e8497e6
new solver is now compiling without a PETSc installation, however only the plain basic solver is available then.
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also removed reporting of PETSc related variables in the case it is not installed/found
2012-08-28 19:19:47 +00:00
0f64289d75
fixed bug causing trouble with ifort 11 (abaqus)
2012-08-28 19:10:54 +00:00
0959ff3299
substituted hand written matrix inversion by LAPACK version with precision selection.
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also introduced check for inversion into DAMASK_spectral_Utilities.f90 for the stress BC calculation. This part is further improved by using 5% of the reference stiffness to avoid trouble in the fully plastic regime (where the stiffness is underestimated)
Test for Marc 2010 is updated because the new inversion give slightly different results near 0 (order of e-13)
2012-08-28 16:59:45 +00:00
73349d02f5
merged precision info into the file prec.f90 and removed prec_single.f90
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precision information is now parsed as a makro, defined by the compiler, eg. -DFLOAT=8 for 8 byte long floats or -- in case no values is given -- for the FEM wrapper by the interface files.
Please don't forget to run setup_code.py !!!!!!!!!!!
abaqus_v6.env is adjusted to specify the standard precision (float=8, int=4) and got some extra compilation options, some deprecated warning supressors are removed
Optional Marc modification will follow that allow automatic selection of suitable precision
2012-08-28 16:08:17 +00:00
f3e7b3cec8
added separate output of dipole formation rate for edge and screw
2012-08-27 15:57:31 +00:00
aa380dcb08
added separate output of dipole formation rate for edge and screw
2012-08-27 15:57:22 +00:00
efd1b513cf
fixed bug in divergenceFDM
2012-08-27 15:43:17 +00:00
9214da4465
added missing labels to list of available outputs
2012-08-27 12:41:57 +00:00
96ba5ecae4
moved some more 'mesh related' functions for post processing from math.f90 to mesh.f90
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f2py functions remaining in math.f90 now uses assumed size arrays in order to have simpler interfaces. This is only working with python 2.7!
changed python pre- and postprocessing scripts.
If you encounter any problems whith core modules, try to remove the old core.so in the lib/damask
2012-08-27 08:04:47 +00:00
55a5112f36
added comments for doxygen documentation
2012-08-25 11:46:36 +00:00
e335222bd0
added constitutive none to abaqus files
2012-08-24 19:21:39 +00:00
405c3765bd
fixed bug in fiber texture component caused non-even distribution by correctly getting numbers of the halton sequence
2012-08-24 13:27:55 +00:00
3cd5fa90e8
corrected dislocation multiplication term for special case of zero density
2012-08-24 11:36:46 +00:00
4f67d04c69
new parameter "significantRho" for nonlocal constitutive law ; density below this value will hardly contribute to dislocation glide or any dislocation reaction ; old parameter "absoluteToleranceRho" is now used only for its initial purpose, namely the absolute tolerance in the state integration
2012-08-23 05:48:21 +00:00
222aed9f60
derivative of velocity with respect to resolved stress was flawed; now much better convergence of stress integration for nonlocal constitutive law
2012-08-21 14:40:01 +00:00
ad7381cfdd
maximum relative step length in stress integration cannot decrease below 1
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intermediate tensor "A" is calculated only once before the Lp loop in "integrateStress"
2012-08-21 08:53:36 +00:00
35dffd52c1
now using spectral_quit (like old spectal solver, needed because of f2py)
2012-08-20 13:22:34 +00:00
b96df9987e
fixed reading/writing of integer arrays with function for real arrays
2012-08-16 14:55:23 +00:00
453c6031a7
added functions for reading values of integer data type to binary file, corrected comment on old versions which are for real (pReal) only
2012-08-16 11:57:15 +00:00
b2aacf9ca4
rates in constitutive_results are taken directly from last converged step and not calculated again; added output of rates for annihilation of screws and deposition of edge jogs on collinear system
2012-08-16 11:03:22 +00:00
bd754dbefd
corrected debug output of evolution rates; added possibility to change the safety factor for the CFL flux condition via the material.config file; updated the example material.config due to recent changes in nonlocal constitutive
2012-08-16 09:13:38 +00:00
0434ef3daa
some comments to be seen in documentation
2012-08-15 13:38:38 +00:00
c2c31a0a59
added SolverBasicPETSC module to the new FFT solver (solves the basic scheme using PETSc when mysolver = basicpetsc in numerics.config)
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some bug fixes
2012-08-14 16:58:23 +00:00
f5e7d576f1
introduced annihilation of screw dipoles; so far no thermal activation, but immediate annihilation; each annihilated screw dipole leaves behind an edge jog of same length as the dipole height on the collinear system
2012-08-14 12:26:20 +00:00
c1c5941733
stressAndItsTangent:
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when winding forward to last substep in increment, also do the calculation if this substep is below "subStepMinCryst";
output of "wind forward" and "cutback" info only for crystallites that are still "todo"
integrateStress:
maximum component in Lp determines absolute convergence criterium:
aTol = max(maxLpComp * rTol_fromConfig , aTol_fromConfig)
this ensures that small values in Lp do not spoil the convergence, similar to the effect of the relevantStrain parameter before (not needed anymore in the stress integration)
2012-08-14 12:07:59 +00:00
eae9a34c6b
corrected debugging output: extreme values of returned stress and jacobian belong to cpfem debugging, not homogenization
2012-08-14 11:48:43 +00:00
259eb7850e
more work on array ordering in new solver. (now working but not tested)
2012-08-10 17:01:58 +00:00
cd0da03ebc
changed comments to doxygen style
2012-08-10 15:58:17 +00:00
08c7be7d15
adaptive regrid now working, updates F and F_lastInc based on mapping.
2012-08-10 15:48:27 +00:00
b324a98014
changed order of most arrays to fortran-fast, whole new solver still work in progress
2012-08-09 13:04:56 +00:00
fe4d4d9525
changed comments in prec and IO to be read by doxygen, fine tuned output of doxygen and added precompilation for documentation
2012-08-09 11:01:53 +00:00
d0933dad7b
added filter option to the spectral solver to mitigate spurious oscillations due to gibb's phenomenon. activate by setting myfilter in config file appropriately (currently only 'none' and 'cosine' options coded). more cleaning up of AL code
2012-08-07 17:23:13 +00:00
925915e30d
some cleaning up
2012-08-07 12:02:57 +00:00
32f8c9c6ea
moved petsc option string to numerics and added new numerics parameters to config file
2012-08-06 17:27:53 +00:00
93658c72db
set auto values back to auto
2012-08-06 12:44:07 +00:00
7e3a837640
moved calculation and output of geometry related data to mesh.f90, moved output of command line related information to DAMASK_spectral_interface.f90.
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improved new solver structure (use with make SOLVER=NEW)
2012-08-06 12:43:05 +00:00
a48d180f8c
allow prefactor for self-diffusion to be equal to zero
2012-08-06 09:03:33 +00:00
e2a2621235
updates for AL version of spectral solver
2012-08-06 08:53:12 +00:00
e8df3678aa
added possibility to assign the transmissivity of grain boundaries a fixed value by use of the keyword "grainboundaryTransmissivity" in the material.config; grain boundaries are identified as interfaces between areas of different material_texture
2012-08-03 14:32:49 +00:00
948d9c03d0
new version of modular solver structure
2012-08-03 09:25:48 +00:00
3ffba037d4
Reading of euler angles from the loadcase corrected.
2012-08-02 17:52:07 +00:00
740357172a
Reading of Euler angles from the loadcase corrected.
2012-08-02 17:46:50 +00:00
ee1bde0cd7
enabling regridding more than once by introducing deallocation of arrays
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added J2 test (stub from Taymour)
2012-07-31 15:37:49 +00:00
5a89c783d4
deallocating already allocated arrays in case of regridding/restarting (i.e. when calling init more than once)
2012-07-31 14:00:15 +00:00
991a7bbd2d
reordered initialization for spectral method, corrected bug of deformation BC parsing when prescribing velocity gradient resulting in wrong average deformation
2012-07-30 15:51:48 +00:00
d4163dd16f
further work on modularization, basic scheme is now calculating the same results as DAMASK_spectral.f90
2012-07-30 14:06:22 +00:00
c341ddd855
more modularization….
2012-07-26 13:58:47 +00:00
Christoph Kords