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DAMASK_EICMD
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DAMASK_EICMD/trunk/mattex.mpie

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Added a possible example of mattex file Some syntax corrections
2007-10-16 17:20:51 +05:30
<materials>
!!!!! IMPORTANT !!!!! All subroutines were committed at once: - constitutive_pheno works - constitutive_dislo without twinning also works This release should serve as reference
2007-12-14 19:06:04 +05:30
[TWIP steel FeMnC]
deleted CFPFEM.f90 and crystal.f90 from repository adopted mattex.mpie to use lattice_structure instead of crystal_structure
2008-04-09 21:05:16 +05:30
lattice_structure 1
constitutive_Microstructure() computes now twin "plop" volumes from the given microstructure. Mattex.dat has 2 parameters for deformation twinning: - average grain size - average twin stack thickness
2007-12-07 20:42:43 +05:30
Nslip 12
Corrected errors from the last release of constitutive_dislo Changed parameter designation in mattex file
2008-03-14 21:53:08 +05:30
Ntwin 12
Changed to SI conformity. Mattex file changed bg->burgers
2007-11-15 22:34:30 +05:30
## Elastic constants
# Unit in [Pa]
!!!!! IMPORTANT !!!!! All subroutines were committed at once: - constitutive_pheno works - constitutive_dislo without twinning also works This release should serve as reference
2007-12-14 19:06:04 +05:30
C11 245.0e9
C12 105.0e9
C44 65.0e9
Checked computation of hardening matrix In case of constitutive_pheno.f90, the computation can be optimized. Mattex file slightly modified
2007-10-16 17:50:58 +05:30
## Parameters for phenomenological modeling
Changed to SI conformity. Mattex file changed bg->burgers
2007-11-15 22:34:30 +05:30
# Unit in [Pa]
!!!!! IMPORTANT !!!!! All subroutines were committed at once: - constitutive_pheno works - constitutive_dislo without twinning also works This release should serve as reference
2007-12-14 19:06:04 +05:30
s0_slip 85.0e6
constitutive_Microstructure() computes now twin "plop" volumes from the given microstructure. Mattex.dat has 2 parameters for deformation twinning: - average grain size - average twin stack thickness
2007-12-07 20:42:43 +05:30
gdot0_slip 0.001
!!!!! IMPORTANT !!!!! All subroutines were committed at once: - constitutive_pheno works - constitutive_dislo without twinning also works This release should serve as reference
2007-12-14 19:06:04 +05:30
n_slip 100.0
h0 355.0e6
s_sat 265.0e6
w0 1.0
Checked computation of hardening matrix In case of constitutive_pheno.f90, the computation can be optimized. Mattex file slightly modified
2007-10-16 17:50:58 +05:30
# Self and latent hardening coefficients
constitutive_Microstructure() computes now twin "plop" volumes from the given microstructure. Mattex.dat has 2 parameters for deformation twinning: - average grain size - average twin stack thickness
2007-12-07 20:42:43 +05:30
hardening_coefficients 1.0 1.4
Checked computation of hardening matrix In case of constitutive_pheno.f90, the computation can be optimized. Mattex file slightly modified
2007-10-16 17:50:58 +05:30
## Parameters for dislocation-based modeling
Added explanations and comments in mattex file The dislocation based constitutive subroutine can be only use for fcc crystal !!!! The constitutive equations are different for bcc and hcp.
2007-10-16 17:41:58 +05:30
# Burgers vector [m]
Corrected errors from the last release of constitutive_dislo Changed parameter designation in mattex file
2008-03-14 21:53:08 +05:30
burgers 2.56e-10
Added explanations and comments in mattex file The dislocation based constitutive subroutine can be only use for fcc crystal !!!! The constitutive equations are different for bcc and hcp.
2007-10-16 17:41:58 +05:30
# Activation energy for dislocation glide [J/K]
Qedge 3.0e-19
In dislo: - model for stacking fault energy computation w.r.t temperature and orientation - classical thermodynamical approach to twin nucleation (delta_E) - rename some parameters In crystallite: - add msg='ok', even if components in consistent tangent are not re-computed - allow for pseudo-convergence in the outer-loop (case of slow convergence of dislocation densities) in mattex: - add new parameters
2008-06-17 20:10:46 +05:30
# Initial dislocation density [m]<5D>
rho0 2.8e13
# Average grain size [m]
grain_size 2.0e-5
Added explanations and comments in mattex file The dislocation based constitutive subroutine can be only use for fcc crystal !!!! The constitutive equations are different for bcc and hcp.
2007-10-16 17:41:58 +05:30
# Passing stress adjustment
c1 0.1
# Jump width adjustment
c2 2.0
# Activation volume adjustment
!!!!! IMPORTANT !!!!! All subroutines were committed at once: - constitutive_pheno works - constitutive_dislo without twinning also works This release should serve as reference
2007-12-14 19:06:04 +05:30
c3 1.2
In dislo: - model for stacking fault energy computation w.r.t temperature and orientation - classical thermodynamical approach to twin nucleation (delta_E) - rename some parameters In crystallite: - add msg='ok', even if components in consistent tangent are not re-computed - allow for pseudo-convergence in the outer-loop (case of slow convergence of dislocation densities) in mattex: - add new parameters
2008-06-17 20:10:46 +05:30
# Average slip distance adjustment for lock formation
!!!!! IMPORTANT !!!!! All subroutines were committed at once: - constitutive_pheno works - constitutive_dislo without twinning also works This release should serve as reference
2007-12-14 19:06:04 +05:30
# = c4(Anxin)*c2(Anxin) !!!!!!
Corrected errors from the last release of constitutive_dislo Changed parameter designation in mattex file
2008-03-14 21:53:08 +05:30
c4 14.25
In dislo: - model for stacking fault energy computation w.r.t temperature and orientation - classical thermodynamical approach to twin nucleation (delta_E) - rename some parameters In crystallite: - add msg='ok', even if components in consistent tangent are not re-computed - allow for pseudo-convergence in the outer-loop (case of slow convergence of dislocation densities) in mattex: - add new parameters
2008-06-17 20:10:46 +05:30
# Average slip distance adjustment when grain boundaries
Corrected errors from the last release of constitutive_dislo Changed parameter designation in mattex file
2008-03-14 21:53:08 +05:30
c5 1.0
In dislo: - model for stacking fault energy computation w.r.t temperature and orientation - classical thermodynamical approach to twin nucleation (delta_E) - rename some parameters In crystallite: - add msg='ok', even if components in consistent tangent are not re-computed - allow for pseudo-convergence in the outer-loop (case of slow convergence of dislocation densities) in mattex: - add new parameters
2008-06-17 20:10:46 +05:30
# Average slip distance adjustment when twin boundaries
c6 0.1
# Athermal recovery adjustment
Corrected errors from the last release of constitutive_dislo Changed parameter designation in mattex file
2008-03-14 21:53:08 +05:30
c7 23.5
Added explanations and comments in mattex file The dislocation based constitutive subroutine can be only use for fcc crystal !!!! The constitutive equations are different for bcc and hcp.
2007-10-16 17:41:58 +05:30
# Dislocation interaction coefficients
constitutive_Microstructure() computes now twin "plop" volumes from the given microstructure. Mattex.dat has 2 parameters for deformation twinning: - average grain size - average twin stack thickness
2007-12-07 20:42:43 +05:30
interaction_coefficients 1.0 2.2 3.0 1.6 3.8 4.5
!!!!! IMPORTANT !!!!! All subroutines were committed at once: - constitutive_pheno works - constitutive_dislo without twinning also works This release should serve as reference
2007-12-14 19:06:04 +05:30
In dislo: - model for stacking fault energy computation w.r.t temperature and orientation - classical thermodynamical approach to twin nucleation (delta_E) - rename some parameters In crystallite: - add msg='ok', even if components in consistent tangent are not re-computed - allow for pseudo-convergence in the outer-loop (case of slow convergence of dislocation densities) in mattex: - add new parameters
2008-06-17 20:10:46 +05:30
## Parameters for mechanical twinning
# Average twin thickness (stacks) [m]
Finalizing the implementation of deformation twinning in constitutive_dislo.f90 Assume to be ready to use
2007-12-10 18:25:43 +05:30
stack_size 5.0e-8
In dislo: - model for stacking fault energy computation w.r.t temperature and orientation - classical thermodynamical approach to twin nucleation (delta_E) - rename some parameters In crystallite: - add msg='ok', even if components in consistent tangent are not re-computed - allow for pseudo-convergence in the outer-loop (case of slow convergence of dislocation densities) in mattex: - add new parameters
2008-06-17 20:10:46 +05:30
# Total twin volume fraction saturation
f_sat 0.2
# Scaling potential nucleation sites
site_scaling 1.0e-7
# Scaling the P-K force on the twinning dislocation
q1 0.75
# Scaling the resolved shear stress
q2 1.0
Finalizing the implementation of deformation twinning in constitutive_dislo.f90 Assume to be ready to use
2007-12-10 18:25:43 +05:30
Added a possible example of mattex file Some syntax corrections
2007-10-16 17:20:51 +05:30
<textures>
[cube SX]
!!!!! IMPORTANT !!!!! All subroutines were committed at once: - constitutive_pheno works - constitutive_dislo without twinning also works This release should serve as reference
2007-12-14 19:06:04 +05:30
symmetry no /monoclinic /orthorhombic
In dislo: - model for stacking fault energy computation w.r.t temperature and orientation - classical thermodynamical approach to twin nucleation (delta_E) - rename some parameters In crystallite: - add msg='ok', even if components in consistent tangent are not re-computed - allow for pseudo-convergence in the outer-loop (case of slow convergence of dislocation densities) in mattex: - add new parameters
2008-06-17 20:10:46 +05:30
Ngrains 10 /2 /4
#(gauss) phi1 0.0 phi 29.21 phi2 -26.57 scatter 0.0 fraction 1.0
#(gauss) phi1 0.0 phi 54.74 phi2 -45.0 scatter 0.0 fraction 0.1
#(gauss) phi1 0.0 phi 45.0 phi2 0.0 scatter 0.0 fraction 0.1
#(gauss) phi1 0.0 phi 0.0 phi2 0.0 scatter 0.0 fraction 0.1
#(gauss) phi1 0.0 phi 35.26 phi2 -45.0 scatter 0.0 fraction 0.1
#(gauss) phi1 0.0 phi 48.19 phi2 -26.57 scatter 0.0 fraction 0.1
#(gauss) phi1 0.0 phi 26.57 phi2 0.0 scatter 0.0 fraction 0.1
#(gauss) phi1 0.0 phi 42.03 phi2 -33.69 scatter 0.0 fraction 0.1
#(gauss) phi1 0.0 phi 40.36 phi2 -11.31 scatter 0.0 fraction 0.1
#(gauss) phi1 0.0 phi 15.62 phi2 -26.57 scatter 0.0 fraction 0.1