23e8fcbc51
updated config file with new convergence parameters
2013-08-08 09:12:12 +00:00
2dc985f558
set tolerances to useful values and renamed them.
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allowed "keyword = value" in numerics.config (simply removing "=" from line)
2013-07-31 15:03:38 +00:00
4f7cd76b29
renamed texture_rotation into texture_transformation
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changed keyword for material.config to axes in line with geom_fromAng.py
former keyword rotation is still recognized for compatibility
2013-07-24 11:09:39 +00:00
4a291dc372
implementation of twin nucleation criteria according to Davids PhD thesis
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applies for fcc crystal structure only
2013-07-01 13:06:01 +00:00
9a1ad7e089
added third value for slip twin interaction in fcc dislotwin example
2013-06-24 12:53:56 +00:00
ec2503253e
added output of slip direction and slip normal
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changed name of fluxdensity outputs
2013-05-23 08:19:36 +00:00
882c3e155f
Adding two titles for accumulated shear due to "slip" and "twin"
2013-05-19 20:34:40 +00:00
c7ba8a2a9b
introduced plain mode (no ping pong) again and added test for MSC.MArc 2012 as prove that its working
2013-05-17 17:52:46 +00:00
d2416abdb4
introduced new keyword 'rotation' to specify texture rotation
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ATTENTION: so far it is read but NOT yet applied!!!
waiting for updated code for orientation assignement
2013-05-02 08:35:37 +00:00
9b1fd579d4
corrected phase numbering in example material.config
2013-04-10 12:09:09 +00:00
ddcc795461
allowed arbitrary grid (formerly know as resolution), i.e. any integer>1 in each dimension is possible.
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removed square root correction for divergence (doesn't make sense)
fixed FFT debug of spectral solver
2013-04-10 10:19:16 +00:00
10e50bf41d
improved accuracy of "accumulated shear": now added as a state variable, which facilitates integration (dotstate=shearrate); needs absolute tolerance value for state integration in material.config
2013-04-04 13:37:14 +00:00
5b8257a7f9
added debugging possibility for MSC.Marc, rename parameters to CAPITALS
2013-03-31 13:06:49 +00:00
44eb771583
added crystallite output of current ip coordinates
2013-03-27 10:12:28 +00:00
15b6242585
set more appropriate default values for spectral solver tolerances (abs stress BC was at huge())
2013-03-26 16:36:52 +00:00
be655ae536
Changed AL solver errors to absolute. Stress boundary error now max of relative and absolute error
2013-03-22 14:46:55 +00:00
cee90bbdb3
simplified dislocation kinetics: dropped relativistic correction of velocity, since the infinite attack frequency already sets a limit for the velocity; dropped second; also dropped the correction term for backward jumps, since it was probably not meaningful
2013-03-21 12:52:29 +00:00
dd06d07e1c
set default number of iteration for spectral solver to 250 instead of 40, abaqus doxygen now does the correct inclusion (everything appeared twice before)
2013-03-14 23:10:02 +00:00
1779510dda
remove some unused variables, set default value for divergence calculation to 1.e-5 and made calculation independent of dim and res
2013-03-12 18:48:28 +00:00
72bc1df832
forgot in previous commit
2013-02-28 17:37:26 +00:00
cd0325baf1
introduced atol_twinfrac for dislotwin
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set values in material.config example
atol_rho 1.0,
atol_twinFrac 1.0e-7
2013-02-14 09:57:26 +00:00
77c0b32af9
removed possible (but not-working) output of schmid_factor_shearband from dislotwin
2013-02-14 08:53:17 +00:00
c7740b41a5
added possible accumulated shear output request to example list of phenopowerlaw
2013-02-07 11:09:14 +00:00
fd94c786f0
moved stiffness tensor calculation to lattice
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introduced 'isotropic' and 'orthorhombic' lattice types to use corresponding symmetries in stiffness tensor. intended to be used with non-crystal plasticity models (j2, constitutive_none with isotropic, cubic or orthotropic elasticity).
2013-01-21 21:57:26 +00:00
8a45a90775
new crystallite output "grainrotationX", "grainrotationY", "grainrotationZ" that gives the deviation of the initial orientation in degrees around the sample reference x/y/z axis, while "grainrotation" still gives the same as axis angle pair in crystal coordinates
2013-01-16 08:45:41 +00:00
738f363263
corrected small issues with PETSc debugging
2013-01-03 16:17:23 +00:00
f14fd45ce1
new material parameter "egdejog": fraction of annihilated screw dipoles that forms edge jogs
2012-12-23 12:56:15 +00:00
5c0c7121e7
made PETSc silent by removing -snes_view from default options.
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introduced PETSc option for debugging that introduces some debugging options into the petsc options and move PETSc initialization from numerics to DAMASK_spectral_utilities
2012-12-15 18:07:49 +00:00
b1f28ba5e7
made restart working for all solvers and added corresponding test
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corrected error handling for FFT based function in case of odd numbers etc.
2012-12-14 17:30:22 +00:00
9eb89b0050
made random multiplication switchable via material.config
2012-12-03 12:59:38 +00:00
62ddbf26df
slightly changed the multiplication term in the nonlocal model for the starvation case
2012-11-29 18:50:25 +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
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
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
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
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
9fc46b4950
added /echo/ statements
2012-10-02 08:12:53 +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
1cfc467705
added new cut back parameter for spectral solver and instrumented variables for use with doxygen
2012-09-13 09:48:38 +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
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
aa380dcb08
added separate output of dipole formation rate for edge and screw
2012-08-27 15:57:22 +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
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
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
32f8c9c6ea
moved petsc option string to numerics and added new numerics parameters to config file
2012-08-06 17:27:53 +00:00
882c44a61d
changed the majority of debugging output to level "extensive"
2012-07-24 15:29:23 +00:00
0fdd43b54b
minor clarification of file content and its use
2012-07-05 10:02:20 +00:00
823013d485
new plasticity: none
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see material.config for necessary parameters (lattice_structure, elastic constants)
2012-07-03 11:16:38 +00:00
Pratheek Shanthraj