Example of material.config, delivering the required information for the new version of constitutive_dislobased
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Luc Hantcherli
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ce515beb39
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290410b3fc
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@ -10,24 +10,52 @@ Ngrains 1
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type RGC
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Ngrains 8
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[Taylor2]
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type isostrain
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Ngrains 2
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[Taylor4]
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type isostrain
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Ngrains 4
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[Taylor10]
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type isostrain
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Ngrains 10
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[Taylor100]
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type isostrain
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Ngrains 100
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#####################
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<microstructure>
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#####################
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[Aluminum_CubeSX]
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(constituent) phase 1 texture 2 fraction 1.0
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[TWIPSteel_Poly]
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(constituent) phase 5 texture 1 fraction 1.0
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[Copper_rCubeSX]
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(constituent) phase 2 texture 3 fraction 1.0
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[TWIPsteel_001]
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(constituent) phase 5 texture 2 fraction 1.0
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[DPsteel]
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(constituent) phase 3 texture 1 fraction 0.8
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(constituent) phase 4 texture 1 fraction 0.2
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[TWIPsteel_011]
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(constituent) phase 5 texture 3 fraction 1.0
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[TWIPsteel_111]
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(constituent) phase 5 texture 4 fraction 1.0
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[TWIPsteel_123]
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(constituent) phase 5 texture 5 fraction 1.0
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[Alu_Polycrystal]
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(constituent) phase 1 texture 1 fraction 1.0
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[Alu_001]
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(constituent) phase 1 texture 2 fraction 1.0
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[Alu_011]
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(constituent) phase 1 texture 3 fraction 1.0
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[Alu_111]
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(constituent) phase 1 texture 4 fraction 1.0
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#####################
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<phase>
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@ -35,27 +63,17 @@ Ngrains 4
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[Aluminum] # below given format will not work. need to select one constitution block from it.
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constitution j2
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c11 110.9e9
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c12 58.34e9
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(output) flowstress
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(output) strainrate
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taylorfactor 3
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tau0 31e6
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gdot0 0.001
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n 20
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h0 75e6
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tau_sat 63e6
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w0 2.25
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constitution phenomenological
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lattice_structure fcc
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Nslip 12
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c11 106.75e9
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c12 60.41e9
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c44 28.34e9
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(output) slipresistance
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(output) rateofshear
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lattice_structure fcc
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Nslip 12
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Ntwin 12
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constitution phenomenological
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(output) slipResistance
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(output) rateOfShear
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### phenomenological constitutive parameters ###
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s0_slip 31e6
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gdot0_slip 0.001
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n_slip 20
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@ -64,21 +82,18 @@ s_sat 63e6
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w0 2.25
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latent_ratio 1.4
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constitution dislobased
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(output) dislodensity
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(output) rateofshear
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burgers 2.86e-10 # Burgers vector [m]
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Qedge 3e-19 # Activation energy for dislocation glide [J/K] (0.5*G*b^3)
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Qsd 2.4e-19 # Activation energy for self diffusion [J/K] (gamma-iron)
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diff0 1e-3 # prefactor vacancy diffusion coeffficent (gamma-iron)
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interaction_coefficients 1.0 2.2 3.0 1.6 3.8 4.5 # Dislocation interaction coefficients
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rho0 6.0e12 # Initial dislocation density [m/m^3]
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c1 0.1 # Passing stress adjustment
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c2 2.0 # Jump width adjustment
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c3 1.0 # Activation volume adjustment
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c4 50.0 # Average slip distance adjustment for lock formation
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c7 8.0 # Athermal recovery adjustment
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c8 1.0e10 # Thermal recovery adjustment (plays no role for me)
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#constitution j2
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#c11 110.9e9
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#c12 58.34e9
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#(output) flowstress
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#(output) strainrate
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#taylorfactor 3
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#s0 31e6
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#gdot0 0.001
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#n 20
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#h0 75e6
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#s_sat 63e6
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#w0 2.25
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[Copper]
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@ -88,48 +103,50 @@ c8 1.0e10 # Thermal recovery adjustment (plays no role fo
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[TWIP steel FeMnC]
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constitution phenomenological
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C11 175.0e9 # elastic constants in Pa
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C12 115.0e9
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C44 135.0e9
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lattice_structure fcc
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Nslip 12
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(output) slipResistance
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(output) rateOfShear
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C11 183.9e9 # elastic constants in Pa
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C12 101.9e9
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C44 115.4e9
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Nslip 12
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Ntwin 12
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#constitution phenomenological
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#(output) slipResistance
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#(output) rateOfShear
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constitution dislobased
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(output) state_slip
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(output) rateofshear_slip
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(output) mfp_slip
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(output) thresholdstress_slip
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(output) state_twin
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(output) rateofshear_twin
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(output) mfp_twin
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(output) thresholdstress_twin
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### phenomenological constitutive parameters ###
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s0_slip 85.0e6 # initial slip resistance
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gdot0_slip 0.001 # reference shear rate
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n_slip 100.0 # stress exponent
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h0 355.0e6 # initial hardening slope
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s_sat 265.0e6 # saturation stress
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w0 1.0 # exponent
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latent_ratio 1.4 # latent/self hardening ratio
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#s0_slip 85.0e6 # initial slip resistance
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#gdot0_slip 0.001 # reference shear rate
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#n_slip 100.0 # stress exponent
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#h0 355.0e6 # initial hardening slope
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#s_sat 265.0e6 # saturation stress
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#w0 1.0 # exponent
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#latent_ratio 1.4 # latent/self hardening ratio
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### dislocation density-based constitutive parameters ###
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burgers 2.56e-10 # Burgers vector [m]
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Qedge 5.5e-19 # Activation energy for dislocation glide [J/K] (0.5*G*b^3)
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Qsd 4.7e-19 # Activation energy for self diffusion [J/K] (gamma-iron)
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diff0 4.0e-5 # prefactor vacancy diffusion coeffficent (gamma-iron)
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grain_size 2.0e-5 # Average grain size [m]
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interaction_coefficients 1.0 2.2 3.0 1.6 3.8 4.5 # Dislocation interaction coefficients
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rho0 6.0e12 # Initial dislocation density [m/m^3]
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c1 0.1 # Passing stress adjustment
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c2 2.0 # Jump width adjustment
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c3 1.0 # Activation volume adjustment
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c4 50.0 # Average slip distance adjustment for lock formation
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c5 1.0 # Average slip distance adjustment when grain boundaries
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c7 8.0 # Athermal recovery adjustment
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c8 1.0e10 # Thermal recovery adjustment (plays no role for me)
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stack_size 5.0e-8 # Average twin thickness (stacks) [m]
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f_sat 1.0 # Total twin volume fraction saturation
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c6 # Average slip distance adjustment when twin boundaries [???]
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site_scaling 1.0e-6 # Scaling potential nucleation sites
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q1 1.0 # Scaling the P-K force on the twinning dislocation
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q2 1.0 # Scaling the resolved shear stress
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grainsize 2.0e-5 # Average grain size [m]
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stacksize 5.0e-8 # Twin stack mean thickness [m]
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fmax 1.0 # Maximum admissible twin volume fraction
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Ndot0 0.0 # Number of potential twin source per volume per time [1/m³.s]
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interaction_coefficients 1.0 2.2 3.0 1.6 3.8 4.5 # Dislocation interaction coefficients
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rho0 6.0e12 # Initial dislocation density [m/m³]
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Cmfpslip 2.0 # Adjustable parameter controlling dislocation mean free path
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Cmfptwin 1.0 # Adjustable parameter controlling twin mean free path
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Cthresholdslip 0.1 # Adjustable parameter controlling threshold stress for dislocation motion
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Cthresholdtwin 1.0 # Adjustable parameter controlling threshold stress for deformation twinning
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Cactivolume 1.0 # Adjustable parameter controlling activation volume
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Cstorage 0.02 # Adjustable parameter controlling dislocation storage
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Carecovery 0.0 # Adjustable parameter controlling athermal recovery
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#####################
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<texture>
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@ -137,11 +154,14 @@ q2 1.0 # Scaling the resolved shear stress
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[random]
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[CubeSX]
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(gauss) phi1 0.0 Phi 0.0 phi2 0.0 scatter 0.0 fraction 1.0
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[rCubeSX]
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(gauss) phi1 45.0 Phi 0.0 phi2 0.0 scatter 0.0 fraction 1.0
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[001]
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(gauss) phi1 0.000 Phi 0.000 phi2 0.000 scatter 0.000 fraction 1.000
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[101]
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(gauss) phi1 0.000 Phi 45.000 phi2 90.000 scatter 0.000 fraction 1.000
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[111]
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(gauss) phi1 0.000 Phi 54.7356 phi2 45.000 scatter 0.000 fraction 1.000
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[123]
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(gauss) phi1 209.805 Phi 29.206 phi2 63.435 scatter 0.000 fraction 1.000
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