ad4706673b
* removed calculations for dipole formation/dissociation by stress change, since it is not used anyways; also removed associated constitutive outputs from material.config
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* removed input variables in constitutive_collectDotState and constitutive_postResults that are not needed anymore (because of recent changes in constitutive_nonlocal)
2011-02-25 09:53:20 +00:00
cd5407b08b
removed all math functions only for double precision by the more flexible counterpart, e.g. "dsqrt --> sqrt", "dsin --> sin". Should not cause any harm, as long as "implicit none" is used.
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Now it is possible to compile a single precision spectral solver/crystal plasticity by replacing mesh.f90 and prec.f90 with mesh_single.f90 and prec_single.f90.
For the spectral method, just call "make precision=single" instead of "make". Use "make clean" evertime you switch precision
2011-02-25 09:25:53 +00:00
2f503f5cdb
added "Lp" as crystallite output
2011-02-25 08:15:26 +00:00
e022810e66
fixed problem in internal stress calculation for periodic neighborhood
2011-02-25 08:10:11 +00:00
f525c02ded
added single precision libraries for FFTW
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First try of implement single precision crystal plasticity, not working yet.
polishing text about geometry construction.
polishing postResults, still having problems concerning machines without MSC installation
2011-02-24 18:39:57 +00:00
e49e5e13af
* in flux calculation: take care of special case for single element model
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* do not overwrite "constitutive_nonlocal_rhoDotFlux" when doing a state perturbation, so we can use it for output
2011-02-24 10:01:41 +00:00
8aef9b1c13
check for twin nodes only in direction of the surface normal. this solves a problem with models of single element thickness and periodic fluxes.
2011-02-24 09:26:30 +00:00
fed53a7e60
in subroutine "mesh_marc_get_mpieOptions": need at least one additional string after keywords "$mpie" and "periodic", not two as it used to be
2011-02-23 12:33:51 +00:00
430966eb20
sorry, forgot to commit the numerics.f90, too
2011-02-23 12:30:52 +00:00
96d3682d5e
* new global integer variable "numerics_integrationMode" (1 indicating integration of central solution, 2 indicating integration of perturbed state)
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* combined "integrator" and "integratorStiffness" in new global variable "numerics_integrator"
2011-02-23 08:29:51 +00:00
d835380bc0
* "constitutive_nonlocal_flux" is set to zero in "constitutive_nonlocal_dotState", not in "constitutive_nonlocal_microstructure"
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* dislocation flux and internal stress calculation now consistent with new definition of slip system lattice according to paper (polarity of screws inverted)
2011-02-23 08:08:06 +00:00
8dd1a694a3
extended IO to cope with different name for solverJob and Model
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polishing, added error codes
added FFTW library files
2011-02-21 14:37:38 +00:00
b21c153761
restructured constitutive_nonlocal_compatibility and incorporated the "surfaceTransmissivity" in the compatibility calculation
2011-02-16 16:38:18 +00:00
24d33bf2ff
* added a new material parameter "surfaceTransmissivity" (default value 1.0) which allows to change the transmissivity of the material surface between 0 and 1
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* now complaining when encountering an unknown nonlocal parameter in material.config
* use same error ID for all material parameters out of bounds
* symmetric flux calculation in side dotState can now be omitted (because of new treatment of periodicity)
* switching back to "local flux balance" (add leaving and entering fluxes at central MP, don't touch neighbor) instead of "flux distribution" (subtract leaving fluxes from central MP and add them at neighboring MP). This has the advantage that there is almost no need for CRITICAL statements in parallelization, so hopefully this results in some speed up.
2011-02-16 16:35:38 +00:00
8f626c8989
Now able to have real periodicity for fluxes (fluxes leaving the model on one side enter on the other side).
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To enable this feature one has to add the following somewhere in the marc input file:
$mpie periodic x y z
for having periodicity in all directions
$mpie periodic z x
for having periodicity in x and z direction
etc.
Note that this only works for regular meshes!!!
2011-02-16 16:23:08 +00:00
89ed6f5f66
Did not compile. Fixed missing ,
2011-02-15 12:29:01 +00:00
c39e04644b
Sorting of hex slip-systems done in update 659 was missing. Included again.
2011-02-15 12:21:54 +00:00
438bf95105
added ft-based reconstruction of deformed configuration to postprocessingMath.f90 and postprocessingMath.pyf
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also added function to calculate average of tensor
some polishing in mpie_spectral.f90, added sanity check to see im resolution is power of 2
2011-02-14 17:21:31 +00:00
171f5375f1
shearrate output now with sign (no |abs| as before)
2011-02-11 10:19:41 +00:00
3d7fad6ba9
mpie_spectral.f90: changed fourier transormation, now using the advanced interface to do the tranformation both ways with just one call. now also using the same variable for pk-stress in both domains and the change of deformation gradient in both domains.
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postprocessing: renamed name of python/f2py modul from "reconstruct" to "postprocessingMath", added some numerical operations to use for postprocessing.
2011-02-09 17:47:28 +00:00
803e1a8c05
In order to help preventing further memory leaks all array sections now have an explicit instead of assumed shape, e.g. Fe(1:3,1:3) instead of Fe(:,:).
2011-02-09 13:12:46 +00:00
466ced911e
* check convergence for nonlocals also in stiffness calculation mode
2011-02-09 08:39:07 +00:00
921967c2ba
* found memory leak in nonlocal model! "constitutive_nonlocal_rhoDotFlux" has to have upper index bound of 10 for second dimension, not 8.
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* need to recalculate dislocation velocity in postResults, otherwise we take values of last perturbed state! So the following outputs were up to now showing the perturbed state: shearrate, dislocation velocity, all density rates!
2011-02-09 08:28:47 +00:00
17a6c0e59b
enhanced comment on dislocation kinetics
2011-02-08 12:48:50 +00:00
6731659aa4
added hint that extreme values of stress and tangent belong to previous cycle
2011-02-08 12:43:30 +00:00
0a30fb739a
now reporting extreme values of stress and tangent, that were returned to marc, in output file
2011-02-08 10:25:51 +00:00
7a7ca1aab7
mpie_spectral and mpie_interface: changed workingdir from pathToLoadFile to pathToGeomFile
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mpie_spectral and numerics: added switch to prevent pre calculation of gamma_hat. slower, but saves memory
3Dvisualize: started to add support for gmsh (not fully working yet)
reconstruct: new version of f2py/Fortran subroutines for output of results from spectral method
2011-02-07 14:35:42 +00:00
faba13f7fd
* now able to introduce some scatter in the initial single dislocation density (only for nonlocal model!) ; setting the parameter "rhoSglScatter" to a positive value generates a gauss distribution for the dislocation density with standard deviation equal to "rhoSglScatter"
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* dislocation stress calculation is only done for nonlocal constitution ("/nonlocal/" keyword is present in material.config)
2011-02-04 15:41:32 +00:00
b362755457
grain orientation shuffling was skipped for /elemhomo/. no clue why, now dropped...
2011-02-03 17:25:58 +00:00
fec2c14a4e
removed hard-coded tolerances from mpie_spectral and put them to numerics/IO
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removed storage of full cauchy stres field from mpie_spectral.f90, only average is stored now
added cauchy stress and von mises equivalent calculation to spectral post.
2011-01-31 17:07:42 +00:00
b72d75ed05
corrected indices in flux density output
2011-01-28 12:49:58 +00:00
c00a42a9a4
fixed last remaining tensor outputs to their transposed versions
2011-01-27 14:29:06 +00:00
aa7d5afd94
changed ifort options back to previous ones as -fast is not working
2011-01-26 13:33:44 +00:00
05d4d5fef2
* kinetics now according to Mohles; enables solid solution hardening
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* changed example in material.config accordingly
2011-01-26 10:17:42 +00:00
6ac06af517
sorry, forgot to alter the most important part: post_results..! eventually, the t16 has defgrads and friends in correct format: du_i/dx_j is listed as linear array (1,1),(1,2),(1,3),(2,1),...
2011-01-24 16:23:37 +00:00
4ee40df5ba
transposed writing into t16 file (and screen/debug) did not work with just stating array(1:3,:)...
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fixed by using math_transpose3x3 (and similar) instead.
2011-01-24 15:02:19 +00:00
794aeb253b
crystallite and CPFEM now print/output tensors in ij notation (used to be, particularly in the t16, ji, i.e. transposed...)
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math reports random seed used for rnd() generation
2011-01-20 19:25:45 +00:00
b546d3bb91
some corrections regarding Multicore-support on mpie_spectral.f90 and makefile
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slight changes on mpie_spectral.f90 regarding file output
2011-01-12 17:02:42 +00:00
062c6b3d54
* allow zero cutoff radius
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* added missing error codes
2011-01-12 12:36:48 +00:00
d92f992eb7
if nonlocal ip has local neighbor assume perfect transparency of the (perhaps virtual) phase boundary. this is only a quick fix! need to rethink the way constitutive and real boundaries are treated!
2011-01-11 18:00:29 +00:00
6a3dd78259
fluxes are disabled when keyword "/nonlocal/" is omitted in the material.config (this is a way to use the constitutive_nonlocal model as a local dislocation based model)
2011-01-11 14:55:36 +00:00
ccc6aac10b
did not delete mpie_spectral2.f90 properly
2011-01-07 13:11:32 +00:00
71fb5eedf2
changed makefile: material subroutines are now compiled using openmp, enabled linux threads for fftw3 (also did some slight changes to enable that in the fortran source code)
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renamed mpie_spectral2.f90 to mpie_spectral2d.f90 (testing file, not properly working at the moment)
changed file extension and variable names in mpie_spectral.f90 and mpie_spectral_interface.f90 from "mesh" to "geom". Removed direct output from mpie_spectral.f90, all output is now base on materialpoint_results(:,1,:)
2011-01-07 12:56:45 +00:00
9447330ab0
ATTENTION repository has been moved to new server!
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Now at musvn1:/home/svn/repos/cpfem
2011-01-05 16:11:51 +00:00
096a4803b0
some polishing concerning openMP initialization
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number of threads is now written to *.out file
2010-12-02 11:04:29 +00:00
36f27edd75
1. Adding more comments
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2. Changing 'subroutine' into 'function' for optimizing the computation time
2010-11-26 11:50:20 +00:00
6b199e7830
allow 2digit values to be read in for MPIE_NUM_THREADS
2010-11-25 10:34:55 +00:00
ea6a6c9503
* environment variable MPIE_NUM_THREADS now determines number of threads used in parallel regions
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* default value of the OMP_NUM_THREADS variable has to be restored at the end of mpie subroutine, since marc also seems to use and change(!) this
* usage: "export MPIE_NUM_THREADS=<number of threads>" to set variable in shell, then restart mentat and compile with option 3 (at the moment this does only work on ws 6, since all other workstations use compiler option "-save"; this puts all local variables by default in static memory, which is a killer for parallelization!)
2010-11-19 17:45:27 +00:00
b9b226548c
* enclose wall time measurement for LpAndItsTangent and count of leapfrogbreaks by CRITICAL construct
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* better use SINGLE (having an implicit barrier at the end) instead of MASTER construct
* deleted all explicit BARRIERs after do loops since parallel loop construct implies barrier at the end
2010-11-19 17:29:29 +00:00
15728d3305
enclose wall time measurement for dotState and dotTemperature function by CRITICAL construct
2010-11-19 17:19:03 +00:00
4f267f4375
parallelization now works properly (not yet tested extensively though):
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* had to add some BARRIER constructs
* only the master thread is allowed to increase the state counter
yet parallelization seems not to give a significant decrease in calculation time with nonlocal model (because of too many CRITICAL statements?)
2010-11-11 16:16:05 +00:00
14594dc9e2
* OpenMP does not like unbounded array subscripts in function calls
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* some write statements were still not enclosed by CRITICAL construct, some needed a MASTER construct
2010-11-11 13:14:53 +00:00
bca951325d
* cpfem will now produce a warning if all components of the stiffness tensor are close to zero
2010-11-04 18:18:01 +00:00
54748bb6a5
cycleCounter reset was 0 now -1 ==> occurence of jacobian calculation is now correct, i.e. always calc at start of new increment
2010-11-04 18:15:50 +00:00
405d5529e7
* checked and corrected parallelization of code. compiles now successfully, but simply aborts computation with first parallel directive without any comment :-(((
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* also put a call to constitutive_microstructure at the start of each crystallite_integration subroutine like it was before. need that for nonlocal model in case of crystallite cutback
2010-11-03 17:22:48 +00:00
0dd99cb965
lattice: (re)introduced _symmetryType function to replace unsafe lookup array
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numerics: polishing
mpie_cpfem_marc: polishing
..powerlaw: aware of symmetryType function
crystallite: aware of symmetryType function, smaller leapfrog acceleration
IO: new warning 101
CPFEM: range of odd stress is now -1e15...+1e15, H_sym is used for stiffness
2010-11-03 14:58:11 +00:00
763c20b302
Introducing the capability to restart jobs that crashed in the middle of sims. At the moment, this feature is exclusive for Marc.
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Major changes:
CPFEM.f90 =>
1. Moving the initialization out of CPFEM_general into a separate subroutine, which is directly called by the hypela2 (Beware, the Abaqus version must also be modified in order to adapt with this change).
2. Restore primary state variables in CPFEM_init from binary files when requested (Marc flag: restart read).
3. Writing primary state variables into binary files (Marc flag: restart write).
FEsolving.f90 =>
1. Adding functions to recognize Marc restart flags: read and write and the corresponding restart file (parent job).
2. Change the initial value of cycleCounter = -1 in conjuction with the change made the ping-pong scheme
homogenization_RGC.f90 =>
1. Just syntax polishing.
IO.f90 =>
1. Adding functions/subroutines to open binary files for writing the primary state variables for restart purpose.
mpie_cpfem_marc.f90
1. Modification of the general scheme for collection and calculation in order to accommodate the newly added restart feature.
2010-11-03 14:39:18 +00:00
4c20daa00d
state loop count was wrong for adaptive euler integration
2010-10-28 12:22:17 +00:00
17812c1f9e
added raw output, gmsh output is still included
2010-10-27 17:15:49 +00:00
9320d48305
in RKCK45 state integration: dotState was not saved in last Runge-Kutta step
2010-10-27 08:48:04 +00:00
f5f3ef5ecc
* have to reset dotState to zero before call to collectDotState (only important for nonlocal calculation)
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* in Fixed Point Iteration: update dependent states after state preguess was missing; on the other hand, the first call to constitutive_microstructure was obsolete
2010-10-26 14:04:33 +00:00
4439282239
no change to previous version, just forget to mention one important change of the last revision:
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* fluxes are now again calculated and distributed only! by the originating material point. this means that the central MP might change the dotState of its neighbor. have to see whether locks slow down parallel computation
2010-10-26 13:49:58 +00:00
62d06001ea
* corrected compatibility for screws (always positive)
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* detection of grain boundary in constitutive_nonlocal_microstructure with the help of transmissivity
* enforce positive densities in constitutive_nonlocal_microstructure (needed because dotState does not create cutbacks for negative densities anymore)
* reset single mobile densities below certain threshold to zero (also done in constitutive_nonlocal_microstructure)
* constitutive_nonlocal_kinetics only gets local state variable as input, no need for the entire array here
* dv_dtau is always positive
* multiplication is only active when there is already some initial density of the respective type
2010-10-26 13:42:18 +00:00
366d52bd71
* former "relevantRho" and "relevantResistance" is renamed to "atol_rho" and "atol_resistance" and now used as an absolute tolerance for the state residuum. before it was used rather as significant state, so whenever the state dropped below that value it was considered converged. (In dislotwin and titanmod constitutive law there is only one value atol_rho which is used for all the states, though the state array consists not only of densities. We need further parameters here!)
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* somewhat simplified convergence check for adaptive euler and runge-kutta
2010-10-26 13:16:37 +00:00
26cb618b6d
changed calculation to small strain/cauchy stress
2010-10-20 11:27:10 +00:00
da35eaa8a1
changed spectral algorithm to version proposed by Ricardo 2001 (using tau_field instead of stress_field).
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Still using largestrain-formulation
2010-10-20 09:27:47 +00:00
3837dad51e
fixed bug in mpie_spectral.f90 concerning spectral method (now deltaF hat get the right value)
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added mpie_spectral2.f90, a version that should get the new algorithm proposed in 2010. until now, it is the same as mpie_spectral.f90 (large strain formulation by suquet et al) but with c2c, c2c FFT
2010-10-20 08:59:00 +00:00
e49de75fe3
stiffness calculation now only needs a single function call to the respective integrator method instead of one call per grain (which seems to heavily slow down the computation). also no special treatment for non-local material points anymore.
2010-10-15 14:57:13 +00:00
fffe731447
* had to correct nonlocal slip system compatibility and flux calculation. last update gave wrong results.
2010-10-15 13:19:26 +00:00
61f8a5fcbe
corrected UpperCase "SolidSolutionStrength" in config file parsing.
2010-10-15 12:59:00 +00:00
3c502561ee
added matrix multiplication 3333x33 to math.f90
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added some parameters for spectral method to numerics.f90 (tolerance)
changed error message concerning spectral method in IO.f90
corrected calculation of stress BC in mpie_spectral.f90
2010-10-13 16:04:44 +00:00
724960686f
* in nonlocal model: dislocation flux now with valid description also for large angle grain boundaries; transfer of dislocations from one slip system to the other according to new variable "constitutive_nonlocal_compatibility" which depends on the angle between slip plane normals and slip directions and is updated once per cycle in function "crystallite_orientations"
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* reactivated debugging functionality for "non-standard" integration methods
2010-10-12 13:08:54 +00:00
efd92d9b51
allocation of special state variables for "non-standard integration" was erroneous. used to produce segmentation fault for integration method 4 and 5.
2010-10-12 12:11:24 +00:00
fce7590c17
* now able to choose method for state integration (integrator and integratorStiffness in numerics.config); standard is "Fixed Point Iteration", which is basically the same as before; others available are "Explicit Euler", "AdaptiveEuler", "Classical Runge-Kutta" and "Runge-Kutta Cash-Karp"
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* now remembering stiffness similar to how we do it for Lp etc.; avoids undefined stiffness values for nonconverged stiffness calculation
* non-local stuff:
* changed non-local kinetics (Gilman2002)
* enforce zero shearrate for overall carrrier density below relevant density
* enforce zero density for those states that become negative and were below relevant density before
* dislocation velocity is not limited by V^(1/3) / dt anymore
2010-10-01 12:18:49 +00:00
9927cd7adb
changed format of resolution. instead of reading exponent of two, now the number given equals directly to the number of FPs. Allows us to use arbitrary number of FPs.
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example:
OLD: reading 5 results in 2^5=32 FPs
NEW: reading 33 results in 33 FPs
2010-10-01 10:42:15 +00:00
2cc7bc38d7
Fixed a missing ','. Assigned plane and direction names.
2010-10-01 06:32:44 +00:00
1ae252c1ce
altered hexagonal slip systems
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(needs comparison to former set, which is potentially wrong)
2010-09-30 17:31:19 +00:00
b85f9b0770
material.config: changed texture of microstructure 1 from 1 to 3, because 1 needs a ODF file which is not in the repository and makes the one_element_model.proc complain.
2010-09-30 12:55:38 +00:00
a8dfdc6487
added _mul33xx33 double contraction: A_ij * B_ij = scalar
2010-09-30 09:32:49 +00:00
cb4b4afc88
corrected header for math_qRot
2010-09-30 08:46:58 +00:00
b259fbd9c6
1) added distribution of leapfrog breaks
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2) lattice_symmetryType is now a function (former lookup array was buggy)
3) stricter check of state var values (>0!) and memory deallocation done
2010-09-30 07:31:53 +00:00
e562df35a9
Added more state dependent variables in post results.
2010-09-29 06:35:08 +00:00
5a51082977
polishing, changed calculation of stress BC.
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prevent updating of gamma hat in case of perfect plasticity
2010-09-24 13:27:53 +00:00
d94236b2d6
Declaration of filename etc. was missing. Fixed now.
2010-09-23 09:13:46 +00:00
83a921eec2
crystallite: polishing
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rest: added "$ID" and line ending settings...
2010-09-23 08:05:50 +00:00
a467fb4ae3
forgot "$ID" and setting line endings...
2010-09-23 08:03:00 +00:00
89136afade
debug now has config file, too
2010-09-23 08:01:41 +00:00
6ea8623f65
added functions math_mul33x3_complex math_Plain99to3333 to math.f90.
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mpie_spectral.f90 uses both functions
math_Plain99to3333 is used for inversion of c0
math_mul33x3_complex is used for equilibrium check in fourier space
also did some cleaning up on mpie_spectral.f90
2010-09-22 12:04:43 +00:00
80618c9814
Cleaned-up, rearranged state variables
2010-09-22 09:00:40 +00:00
7548858ffa
Some useful changes in damper for quicker convergence.
2010-09-22 08:54:36 +00:00
604992a9e1
fixes bugs in screen output, changed gmsh output, now the deformed mesh is written out
2010-09-22 08:51:34 +00:00
6920d8d939
cleaning up, added new output to gmsh and to screen, prepared calculation of deformed mesh
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new convergence criteria: divergence of stressfield (in fourier space)
2010-09-21 15:38:25 +00:00
8488cafe3a
now consistent with numerics.f90 values
2010-09-21 14:37:52 +00:00
18c86ca0b1
Updated corresponding files for titanmod constitutive
2010-09-13 09:29:03 +00:00
9a20f742ea
leaner memory requirement to store states and their rates when calculating the crystallite stiffness
2010-09-13 09:13:25 +00:00
1693bfca47
changed calculation of defgrad from cauchy-stress to pk-stress, now working in large-strain-formulation.
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output of msh-file changed to deformed configuration, removed output of defgrad as a field
2010-09-07 16:37:55 +00:00
3c5f38643d
Brushed up accountability of twinning to Lp
2010-09-07 14:44:37 +00:00
7d4c7f7fa7
corrected bug in debug: stressloop info was erroneous
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mesh init now showing much more ip statistics in verbose mode
2010-09-07 09:06:02 +00:00
a3c92061f9
1) terminallyIll was reset before FE did cutback --> useless extra calculations of same problem over and over...
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2) local stiffness calculation is now standard for non-local grains
3) stressLoopDistribution discriminates between (a) central solution and (b) stiffness perturbation
4) debugger is switched on as standard... (but verboseDebugger not!)
2010-09-06 16:06:41 +00:00
00922705eb
now using current average stiffness for reference material stiffness
2010-09-06 10:00:59 +00:00
c19524f264
1) fixed terminallyIll bug occurring with Ngrains=1 homogenization
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2) brushed up the output to be more easily readable/understandable
2010-09-01 21:04:02 +00:00
4f29e8c2fe
Introduced twinning. Twinning based on accumulated shear on twin systems. No slip-twin interactions yet.
2010-09-01 10:07:52 +00:00
a5c228fd02
changed back transform to complex-to-real, removed redundant variables, reduced size of arrays where possible
2010-09-01 08:05:11 +00:00
85febf0803
added fftw3 as fft(library will not versioned, should be in a linkable folder) , did some corrections on the code, splitted main file up (allows use of makefile), added makefile
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changes on mpie_spectral.f90:
new structure, changed variable names, now using defgrad instead of disgrad, cleaned up, removed augmented Lagrange.
ToDo: Implement Augmented Lagrange again (but then a working version), implement Large strain, think about complex-to real-transform backwards, try to implement MP-support
2010-08-27 16:39:38 +00:00
05568ef73b
calculation of state damper was erroneous for use with nonlocal and other constitution at the same time
2010-08-26 12:54:31 +00:00
197d7ea8d9
rearranged output statements in crystallite init for better readability in output file
2010-08-26 09:52:40 +00:00
ec4269bdd8
Added 'dislocation-type' dependent interactions. Ideal for hexagonal and BCC structures.
2010-08-23 11:36:51 +00:00
da53656c9a
added C3D20R (type 9) to list of possible non-local elements (Christoph, should we invent a reasonable error number for this? "-1" may not be optimal...)
2010-08-19 23:00:26 +00:00
c352146fe6
exchanged forall (warning causers) to nested do loops
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deleted (currently unused) symmetrization of H tensor in CPFEM.f90 --> Denny pls advise?
2010-08-19 21:35:38 +00:00
f78b07448f
some modifications in line with Davids analytical model
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input some additional variables via material.config
2010-08-17 14:23:55 +00:00
bb9899e7de
1) added element type 57 (C3D20R) reduced quadratic hexahedral
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2) need discussion about the present omission of the FE_nodesAtIP for type 8 --> added comment into source code
2010-08-16 22:53:24 +00:00
9f071c3e01
Added kink-pair pre-factor for screw dislocation mobilities on non-basal slip systems in hex
2010-08-06 15:53:45 +00:00
298cecbfec
corrected syntax errors (long lines, line continuation by \) and logical mistake in mpie_cpfem_marc / abq_std which went unnoticed in ifort. Using SunStudio f90 surfaced those...
2010-08-03 23:47:00 +00:00
60decea760
Calibration (Prismatic slip) of the new dislocation density based CPFE model for single crystal alpha-Ti (Titanmod). Formulated edge and screw dislocations mobilities in presence of kink pairs. Updated comments. The model shows the plateau in stress evolution in prismatic orientation which is observed in experiments.
2010-07-15 07:16:15 +00:00
49926d5d66
F77 --> F90 polishing/condensation as far as possible.
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next step is change of Re/Im FFT to Re only...
2010-07-13 15:29:26 +00:00
4d110126da
adopted improvements done by Arun Prakash.
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mesh:
elemType identification based on lower case
Abaqus now reports more errors
IO:
new function to inquire whether inputfile contains "parts"
new function to assemble multiply included inputfile into a flat one
awareness of range generation in element numbers
error reporting
2010-07-13 10:26:07 +00:00
eb7830dc8f
New Titanium CPFE model based on dislocation density. Running but calibration and changes needed.
2010-07-13 08:19:25 +00:00
397db06fb3
cpfe_general now returns also Kirchhoff-stress P and dPdF
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added dummy variables P and dPdF to mpie_cpfe_* to be able to call cpfem_general correctly
2010-07-07 09:58:18 +00:00
80016f8429
added P and dPdF for the call to cpfem_general, made some comments in the code, aligned some loops
2010-07-07 09:10:54 +00:00
f9834bc612
changed types of integers and reals in fourier transform, changed some variables and cleaned up code to make it easier to understand
2010-07-05 16:01:36 +00:00
c3e222dbbd
errs added etc.
2010-07-05 11:33:48 +00:00
4f76eada31
started suggestions for F77 --> F90 style
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xkdyad useful..?
looking for error calculation (Ricardo to rescue here)
2010-07-02 17:15:53 +00:00
d6ba9d54b6
changed declaration of two variables from real to int, spectral method is now working.
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started to commend Ricardos code, layoutet loops and removed some redundant variables.
until now, no error calculation is done. at the moment calculations are in an infinite loop
2010-07-02 14:10:36 +00:00
661bb97800
corrected some problems in building mesh
2010-07-01 15:20:39 +00:00
2ec39c936c
added first version of spectral method, changed corrected functions to get correct path to files
2010-07-01 15:20:06 +00:00
c3e51e5330
added functions to read out resolution, dimension and homogenization from mesh file
2010-06-25 11:31:05 +00:00
eb0cc24a8e
no need for material parameter "a" anymore, dislocation stress calculation now works without "core spreading"
2010-06-21 16:01:05 +00:00
7d6e52067b
dislocation stress based on dislocation density gradients
2010-06-21 15:58:56 +00:00
6d874e2c1f
nonlocal stiffness calculation:
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rather perturb all components at once (and optionally decrease the frequency of the Jacobian update with the iJaco parameter) than perturbing only a single component per cycle
2010-06-17 06:32:56 +00:00
1c72439350
first shot at init with CPFEM_general
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better would be to manually read the mesh resolution, set up Spectral solution strategy and call CPFEM_general just during BVP solution.
2010-06-10 15:32:06 +00:00
8ea52ac495
mpie_spectral now can read loadcase data
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adapted error codes
2010-06-10 14:51:10 +00:00
386ca7ebc3
added some basic I/O functions to mpie_spectral.f90
2010-06-10 08:50:04 +00:00
740db98090
- use upwind differences scheme for fluxes instead of central differences
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- introduced possibility to "reflect" fluxes at free surfaces in order to have quasi-periodic fluxes
2010-06-09 08:56:00 +00:00
11b98fbfa6
added ID functionality and correct line endings
2010-06-08 10:10:57 +00:00
82687d31c8
first shot at mpie_spectral wrapper
2010-06-08 10:08:15 +00:00
7e78932976
renamed "mpie_cpfem_init" subroutine within mpie_interface module to more general name "mpie_interface_init"
2010-06-08 09:35:13 +00:00
71c6179ee5
dislocation stress had wrong sign in some components
2010-06-08 09:34:23 +00:00
3ce1882d29
when calculating dislocation stress at grain boundaries, densities are now extrapolated similarly to like it was already done at free surfaces
2010-06-07 16:01:37 +00:00
3989cc2688
dislocation stress now considers dislocation segments of length V^(1/3) and ensures non-singular solution for points that are collinear to the dislocation line by means of a core spreading parameter "a". stress is scaled by a reference cutoff radius "r" to avoid mesh-dependent stress values.
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corrected formula for conversion of anisotropic elastic constants to isotropic Youngs modulus and poissons ratio
2010-06-07 14:32:23 +00:00
5283ba5546
if it is pReal it should be 1.0 not just 1
2010-05-31 07:12:45 +00:00
76b392e12f
dislocation stress calculation in constitutive_nonlocal_microstructure: corrected mapping from lattice to slip system frame and the neighboring dislocation density formulation
2010-05-28 13:12:36 +00:00
bb73a74325
there was a line break missing so that it did not compile
2010-05-26 17:10:26 +00:00
9932c90c73
restoring the crystallite.f90, IO.f90 and material.f90 to the version 575. the version 576 of these files contain some uncleared debugging statements.
2010-05-26 16:34:44 +00:00
d114a600c3
fixed some errors in QuaternionToEuler, RToQuaternion to get the correct texture representation in the output.
2010-05-26 15:52:54 +00:00
e5f0af638e
fixed calculation of dislocation stress for elements with a single ip and no neighbors; used to get segmentation fault
2010-05-26 09:17:10 +00:00
0c5bc83469
in nonlocal_microstructure: at the model surface the excess density is now extrapolated from opposite neighbor instead of assuming zero density; this results in better modeling of the dislocation stress at the surface
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restructured nonlocal_dotstate, to be able to easily switch on and off particular effects in the microstructure evolution
nonlocal_dotstate now enforces a cutback when single density runs the risk of becoming negative; in the case of a state already below the relevantState dotState is set to zero
introduced two new output variables: rho_dot_edge and rho_dot_screw
2010-05-21 08:51:15 +00:00
dba4ae7ef1
new numerics parameter "defgradTolerance" replaces "relevantStrain" in cpfem, since "relevantStrain" is also used in crystallite but in a different context.
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"defgradTolerance" gets the same standard value as "relevantStrain" so calculations should be consistent with older ones
2010-05-20 14:55:11 +00:00
3a23dc4bbd
first call to hypela2 in inc 0 is done with computation mode 2 (=plain calc), but since rev. 539 the second call was done with computation mode 6 (=only return values) instead of 2. This doesnt work, because computation mode 2 might calculate stress and tangent for all materialpoints, but the mapping from lattice to current configuration is only done for the element/IP that triggers the call.
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So switched back to the former order of calls which also works for marc2010:
el 1 IP 1 | el 1 IP 2
|
inc mode lovl | inc mode lovl
------------------ | ------------------
0 2 6 | 0 2 6
1 6 4 | 1 6 4
1 4 6 | 1 3 6
1 6 4 | 1 6 4
1 1 6 | 1 2 6
Still to be checked:
according to Franz the lovl order could be different in contact analysis (e.g. starting with lovl 4 instead of 6)
2010-05-20 09:14:59 +00:00
51da3b6242
sorry, in rev 568 some variables were not declared in crystallite_postResults
2010-05-18 12:36:09 +00:00
472684c30e
make element type 8 (= hex8 reduced integration) available for nonlocal constitutive law
2010-05-18 08:13:23 +00:00
19b6fae88b
added a missing exclamation mark in front of an $OMP directive
2010-05-18 08:07:55 +00:00
d96780967b
added some output variables in crystallite: F, Fe, Fp, Ee, P, S
2010-05-18 07:57:13 +00:00
15328e51cf
Like this Euler angles AND grain rotation should be OK.
2010-05-11 15:06:21 +00:00
483584ceb3
improved version of general I/O functions
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renamed module cpfem_interface to mpie_interface
2010-05-11 06:57:15 +00:00
e810e5cfa1
changed fileopen routines in IO.f90 to use solver dependant functions defined in the interface routines
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DID NOT test ABAQUS versions yet, not shure whether (V)GETOUTDIR returns path with or without terminating slash
2010-05-10 15:02:59 +00:00
0416c9a616
reworked build_ipNeighborhood
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added C3D8R reduced integration hexahedral element
2010-05-10 14:54:59 +00:00
2405a51042
crystallite:
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- grainrotation calculation now is done with symmetryID 0, i.e. without symmetry reduction since we want the absolute misorientation.
- While math has everything in radians, post results eulerangles and axisangle are given in degrees.
And: grain rotation seems OK after the previous changes in math module.
2010-05-07 12:01:46 +00:00
97f206d0bc
new errors regarding Spectral method input file parsing
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mesh setup from Spectral input file
$Id$ in FEsolving activated
2010-05-06 16:40:47 +00:00
e4067f2d26
debugged zoo of rotation operations and transformations
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all angles now in radians
introduced a rudimentary check in math_init to complain (IO_error) about broken transformations (e.g. quat --> R --> quat)
2010-05-06 14:07:21 +00:00
f23b4d16d1
updated section with dislotwin paramters
2010-05-06 09:01:54 +00:00
383a36b226
added comment on reformating to common block files
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added modifications necessary for running the subroutine with Marc/Mentat2010
2010-05-06 08:50:54 +00:00
393a67e587
now stating instance when sanity checks run into trouble
2010-05-05 13:36:59 +00:00
0a36527f61
fixed bugs in math_quaternionDisorientation
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though running, there still seem to be some problems with the quaternion functions, since crystallite_grainRotation gives some dubious results!
2010-05-04 16:02:05 +00:00
ba48e5d3ab
fixed syntax errors in last commit -- hopefully no further ones...
2010-05-04 13:03:35 +00:00
cecffffe2b
disorientation with symmetryType == 0 returns plain misorientation
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complain about unknown symmetryType
2010-05-04 12:54:13 +00:00
adaeb0e1ef
rotation axis is undefined for small angles and therefore gets a NaN
2010-05-03 18:27:19 +00:00
ea718573ef
return 180° disorientation about 100 for neighbors with different phases
2010-04-29 12:28:51 +00:00
8ab101da50
safe use of acos function in math_QuaternionToAxisAngle
2010-04-29 10:33:39 +00:00
15e5dcf8f2
math_QuaternionToAxisAngle now safe for small or close to 2pi rotations.
2010-04-29 10:01:09 +00:00
e8719cb6b8
Table driven input works wirh 2010!
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That leaves DDM to do for tomorrow ;-)
2010-04-29 09:43:31 +00:00
aaf1bf0edf
fixed (first) problem with Marc2010 single job with old style input and extended precision should work now!
2010-04-29 08:15:29 +00:00
c34c07a6ff
statedamper has to be local (specific for each e,i,g); with a global damping we may produce spurious convergence
2010-04-29 07:41:29 +00:00
77dc16d15f
print aged state of 1 1 1, which always exists, to avoid segmentation fault
2010-04-29 07:34:20 +00:00
79f286f24c
small typo
2010-04-28 17:45:30 +00:00
0b83fa0fb2
corrected (?) disorientation calc and introduced some new assisting functions
2010-04-28 17:19:58 +00:00
35cebfb132
extended output string length for init msg
2010-04-28 17:19:06 +00:00
a36951a6ac
changed common block files to release version
2010-04-28 07:28:12 +00:00
e8ab495a6c
Introduced new parameter NaN, not a number. It should be assigned for invalid results, such as currently for misorientation of unknown crystal symmetry.
2010-04-19 13:40:22 +00:00
cab2261693
New array crystallite_symmetryID(i,g,e) is now filled during initialization run with 1 for bcc and fcc phase and 2 for hexagonal phase. The values are needed for misorientation calculations to apply the correct symmetry operators for cubic and hexagonal phases.
2010-04-19 10:03:34 +00:00
249042c2d3
New output can be requested from crystallite:
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(output) grainrotation
it gives the deviation from the initial grain orientation
in axis-angle representation with the angle in degrees.
2010-04-12 11:14:36 +00:00
653837046e
new: math_QuaternionToAxisAngle
2010-04-12 11:07:25 +00:00
adf6206b71
corrected symmetry operations for hex.
2010-04-12 08:04:26 +00:00
fc3f35cf3b
debugger = .false.
2010-04-08 09:30:25 +00:00
1730a90e12
corrected ip numbers in FE_ipNeighbor for element type 21; used to get wrong neighborhood for this element type
2010-04-06 11:45:23 +00:00
9b5047c828
corrected two OMP CRITICAL terminations
2010-04-06 06:47:15 +00:00
1bf740eb9d
an allocation statement was deleted from rev 518 to rev 520!!!
2010-03-30 13:15:18 +00:00
67c523e4b1
enclosed output statements in an "if (verboseDebugger)"
2010-03-25 08:27:42 +00:00
9026cc4016
again corrections. but this version must work.
2010-03-24 16:23:21 +00:00
414050303b
forgotten: the change in the input config
2010-03-24 13:28:46 +00:00
40b1478dac
the latest RGC model + corrections for "element homogeneous" feature
2010-03-24 13:20:12 +00:00
3aa2dd5fef
removed special characters from twip steel section in material.config
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changed crirtical twin stress in constitutive_dislotwin.f90
2010-03-24 08:17:27 +00:00
2c6c8fa04e
ensure positive eulerangles in math_QuaternionToEuler
2010-03-19 16:11:53 +00:00
f4e5d32cde
added flag verboseDebugger to debug in order to have more control about debugging statements
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set this to true if you want extended debugging info in the output file
2010-03-19 14:14:08 +00:00
418bb9ecbe
small improvement in readability
2010-03-19 12:56:00 +00:00
948c119ee9
changed internal representation of orientation and misorientation from euler angles to quaternions (this should also fix some bugs in the math_misorientation subroutine). includes a couple of new functions in math.f90 and some changes in crystallite.f90.
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beware that crystallite output "orientation" now by default returns the orientation as quaternion. if you want euler angles instead, you have to add "eulerangles" as a crystallite output in your material.config file (see material.config template).
for input of orientations in the texture block of the material.config you still have to specify the rotation in terms of euler angles, quaternions are not yet supported for input.
2010-03-18 12:23:17 +00:00
e6fdfdfc36
iJacoStiffness belongs to numerics, not debug
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sorry for not having checked that before
2010-03-17 17:00:54 +00:00
1a992e1aef
nonlocal stiffness calculation produced segmentation fault for cycle number > 16. Corrected calculation of perturbation indices k and l.
2010-03-10 09:53:41 +00:00
e3dd7551dc
added output for dislocation evolution rate associated with flux: "rho_dot_flux"
2010-03-10 09:49:40 +00:00
4752bbe42e
deleted unused <global> part from file
2010-03-09 15:36:07 +00:00
61bd0224c1
- corrected an if statement in the state loop
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- nonlocal stiffness calculation: we perturb all material points at the same time, so instead of N^2 loops we just need N
- set "forceLocalStiffnessCalculation" to false as standard
2010-03-04 17:27:39 +00:00
Christoph Kords