updated TWIP steel data set to have only 2 slip system families, added data set for tungsten

code/config/Phase_Dislotwin_TWIP_Steel_FeMnC.config

@@ -31,17 +31,19 @@ grainsize             2.0e-5        # Average grain size [m]
 SolidSolutionStrength 1.5e8         # Strength due to elements in solid solution
 
 ### Dislocation glide parameters ###
-Nslip               12 0 0 0
-slipburgers         2.56e-10 0 0 0  # Burgers vector of slip system [m]
-rhoedge0            1.0e12 0 0 0    # Initial dislocation density [m/m**3]
-rhoedgedip0         1.0 0 0 0       # Initial dislocation density [m/m**3]
-Qedge               3.7e-19 0 0 0   # Activation energy for dislocation glide [J]
-v0                  1.0e-4 0 0 0    # Initial glide velocity [m/s]
-CLambdaSlip         10.0 0 0 0      # Adj. parameter controlling dislocation mean free path
+Nslip               12 0
+slipburgers         2.56e-10 0      # Burgers vector of slip system [m]
+rhoedgedip0         1.0 0           # Initial dislocation density [m/m**3]
+rhoedge0            1.0e12 0        # Initial dislocation density [m/m**3]
+v0                  1.0e-4 0        # Initial glide velocity [m/s]
+Qedge               3.7e-19 0       # Activation energy for dislocation glide [J]
+pexponent           1.0 1.0         # p-exponent in glide velocity
+qexponent           1.0 1.0         # q-exponent in glide velocity
+tau_peierls         0.0             # Peierls stress (only used for bcc materials)
+# hardening of glide
+CLambdaSlip         10.0 0          # Adj. parameter controlling dislocation mean free path
 D0                  4.0e-5          # Vacancy diffusion prefactor [m**2/s]
 Qsd                 4.5e-19         # Activation energy for climb [J]
-pexponent           1.0             # p-exponent in glide velocity
-qexponent           1.0             # q-exponent in glide velocity
 Catomicvolume       1.0             # Adj. parameter controlling the atomic volume [in b]
 Cedgedipmindistance 1.0             # Adj. parameter controlling the minimum dipole distance [in b]
 atol_rho            1.0
@@ -49,7 +51,7 @@ interactionSlipSlip 0.122 0.122 0.625 0.07 0.137 0.122 # Interaction coefficient
 
 ### Shearband parameters ###
 shearbandresistance 180e6
-shearbandvelocity   1e-4
+shearbandvelocity   1e-4            # set to zero to turn shear banding of
 QedgePerSbSystem    3.7e-19         # Activation energy for shear banding [J]
 
 ### Twinning parameters ###

code/config/Phase_Dislotwin_Tungsten.config

@@ -0,0 +1,63 @@
+### $Id$ ###
+[Tungsten]
+
+elasticity          hooke
+plasticity          dislotwin
+
+### Material parameters ###
+lattice_structure     bcc
+C11                   523.0e9       # From Marinica et al. Journal of Physics: Condensed Matter(2013)
+C12                   202.0e9
+C44                   161.0e9
+
+grainsize             2.0e-5        # Average grain size [m]
+SolidSolutionStrength 1.5e8         # Strength due to elements in solid solution
+
+### Dislocation glide parameters ###
+#per family
+Nslip               12 0 
+slipburgers         2.72e-10        # Burgers vector of slip system [m]
+rhoedge0            1.0e12          # Initial dislocation density [m/m**3]
+rhoedgedip0         1.0             # Initial dislocation density [m/m**3]
+v0                  1.0e-4          # Initial glide velocity [m/s]
+Qedge               2.725e-19       # Activation energy for dislocation glide [J]
+pexponent           0.78            # p-exponent in glide velocity
+qexponent           1.58            # q-exponent in glide velocity
+tau_peierls         2.03e9          # peierls stress (for bcc)
+
+
+#hardening
+CLambdaSlip         10.0            # Adj. parameter controlling dislocation mean free path
+D0                  4.0e-5          # Vacancy diffusion prefactor [m**2/s]
+Qsd                 4.5e-19         # Activation energy for climb [J]
+Catomicvolume       1.0             # Adj. parameter controlling the atomic volume [in b]
+Cedgedipmindistance 1.0             # Adj. parameter controlling the minimum dipole distance [in b]
+atol_rho            1.0
+interactionSlipSlip 0.122 0.122 0.625 0.07 0.137 0.122 # Interaction coefficients (Kubin et al. 2008)
+
+### no shear banding, no twinning
+shearbandvelocity   0.0             # no shear banding
+Ntwin               0               # no shear banding
+
+### Shearband parameters ###
+
+shearbandresistance 180e6
+QedgePerSbSystem    3.7e-19         # Activation energy for shear banding [J]
+
+### twinning parameter ###
+twinburgers         1.47e-10        # Burgers vector of twin system [m]                                 
+twinsize            5.0e-8          # Twin stack mean thickness [m]                                     
+L0                  442.0           # Length of twin nuclei in Burgers vectors                          
+maxtwinfraction     1.0             # Maximum admissible twin volume fraction                           
+Ndot0               0.0             # Number of potential sources per volume per time [1/m**3.s]        
+xc                  1.0e-9          # critical distance for formation of twin nucleus                   
+VcrossSlip          1.67e-29        # cross slip volume                                                 
+rexponent           10.0            # r-exponent in twin formation probability                          
+Cmfptwin            1.0             # Adj. parameter controlling twin mean free path                    
+Cthresholdtwin      1.0             # Adj. parameter controlling twin threshold stress                  
+interactionSlipTwin 0.0 0.0 0.0     # Dislocation-Twin interaction coefficients                         
+interactionTwinTwin 0.0 0.0         # Twin-Twin interaction coefficients                                
+atol_twinFrac       1.0e-7
+SFE_0K              -0.0396         # stacking fault energy at zero K; TWIP steel: -0.0526; Cu: -0.0396
+dSFE_dT             0.0002          # temperature dependance of stacking fault energy  
+