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.
...
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
...
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...
...
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
...
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
...
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
...
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
...
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
...
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.
...
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.
...
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
...
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
...
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.
...
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:
...
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
...
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
...
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
...
- 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.
...
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
Philip Eisenlohr