From 290410b3fcaf4d2f5717085f7d1b92a8f5aa73cb Mon Sep 17 00:00:00 2001 From: Luc Hantcherli Date: Tue, 14 Jul 2009 11:31:06 +0000 Subject: [PATCH] Example of material.config, delivering the required information for the new version of constitutive_dislobased --- code/material.config | 180 ++++++++++++++++++++++++------------------- 1 file changed, 100 insertions(+), 80 deletions(-) diff --git a/code/material.config b/code/material.config index f35cd1cfd..ec7bf1d7b 100644 --- a/code/material.config +++ b/code/material.config @@ -10,24 +10,52 @@ Ngrains 1 type RGC Ngrains 8 +[Taylor2] +type isostrain +Ngrains 2 + [Taylor4] type isostrain Ngrains 4 +[Taylor10] +type isostrain +Ngrains 10 + +[Taylor100] +type isostrain +Ngrains 100 + ##################### ##################### -[Aluminum_CubeSX] -(constituent) phase 1 texture 2 fraction 1.0 +[TWIPSteel_Poly] +(constituent) phase 5 texture 1 fraction 1.0 -[Copper_rCubeSX] -(constituent) phase 2 texture 3 fraction 1.0 +[TWIPsteel_001] +(constituent) phase 5 texture 2 fraction 1.0 -[DPsteel] -(constituent) phase 3 texture 1 fraction 0.8 -(constituent) phase 4 texture 1 fraction 0.2 +[TWIPsteel_011] +(constituent) phase 5 texture 3 fraction 1.0 +[TWIPsteel_111] +(constituent) phase 5 texture 4 fraction 1.0 + +[TWIPsteel_123] +(constituent) phase 5 texture 5 fraction 1.0 + +[Alu_Polycrystal] +(constituent) phase 1 texture 1 fraction 1.0 + +[Alu_001] +(constituent) phase 1 texture 2 fraction 1.0 + +[Alu_011] +(constituent) phase 1 texture 3 fraction 1.0 + +[Alu_111] +(constituent) phase 1 texture 4 fraction 1.0 ##################### @@ -35,27 +63,17 @@ Ngrains 4 [Aluminum] # below given format will not work. need to select one constitution block from it. -constitution j2 -c11 110.9e9 -c12 58.34e9 -(output) flowstress -(output) strainrate -taylorfactor 3 -tau0 31e6 -gdot0 0.001 -n 20 -h0 75e6 -tau_sat 63e6 -w0 2.25 - -constitution phenomenological -lattice_structure fcc -Nslip 12 c11 106.75e9 c12 60.41e9 c44 28.34e9 -(output) slipresistance -(output) rateofshear +lattice_structure fcc +Nslip 12 +Ntwin 12 +constitution phenomenological +(output) slipResistance +(output) rateOfShear + +### phenomenological constitutive parameters ### s0_slip 31e6 gdot0_slip 0.001 n_slip 20 @@ -64,21 +82,18 @@ s_sat 63e6 w0 2.25 latent_ratio 1.4 -constitution dislobased -(output) dislodensity -(output) rateofshear -burgers 2.86e-10 # Burgers vector [m] -Qedge 3e-19 # Activation energy for dislocation glide [J/K] (0.5*G*b^3) -Qsd 2.4e-19 # Activation energy for self diffusion [J/K] (gamma-iron) -diff0 1e-3 # prefactor vacancy diffusion coeffficent (gamma-iron) -interaction_coefficients 1.0 2.2 3.0 1.6 3.8 4.5 # Dislocation interaction coefficients -rho0 6.0e12 # Initial dislocation density [m/m^3] -c1 0.1 # Passing stress adjustment -c2 2.0 # Jump width adjustment -c3 1.0 # Activation volume adjustment -c4 50.0 # Average slip distance adjustment for lock formation -c7 8.0 # Athermal recovery adjustment -c8 1.0e10 # Thermal recovery adjustment (plays no role for me) +#constitution j2 +#c11 110.9e9 +#c12 58.34e9 +#(output) flowstress +#(output) strainrate +#taylorfactor 3 +#s0 31e6 +#gdot0 0.001 +#n 20 +#h0 75e6 +#s_sat 63e6 +#w0 2.25 [Copper] @@ -88,48 +103,50 @@ c8 1.0e10 # Thermal recovery adjustment (plays no role fo [TWIP steel FeMnC] -constitution phenomenological +C11 175.0e9 # elastic constants in Pa +C12 115.0e9 +C44 135.0e9 lattice_structure fcc -Nslip 12 -(output) slipResistance -(output) rateOfShear -C11 183.9e9 # elastic constants in Pa -C12 101.9e9 -C44 115.4e9 +Nslip 12 +Ntwin 12 +#constitution phenomenological +#(output) slipResistance +#(output) rateOfShear +constitution dislobased +(output) state_slip +(output) rateofshear_slip +(output) mfp_slip +(output) thresholdstress_slip +(output) state_twin +(output) rateofshear_twin +(output) mfp_twin +(output) thresholdstress_twin ### phenomenological constitutive parameters ### -s0_slip 85.0e6 # initial slip resistance -gdot0_slip 0.001 # reference shear rate -n_slip 100.0 # stress exponent -h0 355.0e6 # initial hardening slope -s_sat 265.0e6 # saturation stress -w0 1.0 # exponent - -latent_ratio 1.4 # latent/self hardening ratio +#s0_slip 85.0e6 # initial slip resistance +#gdot0_slip 0.001 # reference shear rate +#n_slip 100.0 # stress exponent +#h0 355.0e6 # initial hardening slope +#s_sat 265.0e6 # saturation stress +#w0 1.0 # exponent +#latent_ratio 1.4 # latent/self hardening ratio ### dislocation density-based constitutive parameters ### burgers 2.56e-10 # Burgers vector [m] Qedge 5.5e-19 # Activation energy for dislocation glide [J/K] (0.5*G*b^3) -Qsd 4.7e-19 # Activation energy for self diffusion [J/K] (gamma-iron) -diff0 4.0e-5 # prefactor vacancy diffusion coeffficent (gamma-iron) -grain_size 2.0e-5 # Average grain size [m] -interaction_coefficients 1.0 2.2 3.0 1.6 3.8 4.5 # Dislocation interaction coefficients - -rho0 6.0e12 # Initial dislocation density [m/m^3] -c1 0.1 # Passing stress adjustment -c2 2.0 # Jump width adjustment -c3 1.0 # Activation volume adjustment -c4 50.0 # Average slip distance adjustment for lock formation -c5 1.0 # Average slip distance adjustment when grain boundaries -c7 8.0 # Athermal recovery adjustment -c8 1.0e10 # Thermal recovery adjustment (plays no role for me) - -stack_size 5.0e-8 # Average twin thickness (stacks) [m] -f_sat 1.0 # Total twin volume fraction saturation -c6 # Average slip distance adjustment when twin boundaries [???] -site_scaling 1.0e-6 # Scaling potential nucleation sites -q1 1.0 # Scaling the P-K force on the twinning dislocation -q2 1.0 # Scaling the resolved shear stress +grainsize 2.0e-5 # Average grain size [m] +stacksize 5.0e-8 # Twin stack mean thickness [m] +fmax 1.0 # Maximum admissible twin volume fraction +Ndot0 0.0 # Number of potential twin source per volume per time [1/m³.s] +interaction_coefficients 1.0 2.2 3.0 1.6 3.8 4.5 # Dislocation interaction coefficients +rho0 6.0e12 # Initial dislocation density [m/m³] +Cmfpslip 2.0 # Adjustable parameter controlling dislocation mean free path +Cmfptwin 1.0 # Adjustable parameter controlling twin mean free path +Cthresholdslip 0.1 # Adjustable parameter controlling threshold stress for dislocation motion +Cthresholdtwin 1.0 # Adjustable parameter controlling threshold stress for deformation twinning +Cactivolume 1.0 # Adjustable parameter controlling activation volume +Cstorage 0.02 # Adjustable parameter controlling dislocation storage +Carecovery 0.0 # Adjustable parameter controlling athermal recovery ##################### @@ -137,11 +154,14 @@ q2 1.0 # Scaling the resolved shear stress [random] -[CubeSX] -(gauss) phi1 0.0 Phi 0.0 phi2 0.0 scatter 0.0 fraction 1.0 - -[rCubeSX] -(gauss) phi1 45.0 Phi 0.0 phi2 0.0 scatter 0.0 fraction 1.0 +[001] +(gauss) phi1 0.000 Phi 0.000 phi2 0.000 scatter 0.000 fraction 1.000 +[101] +(gauss) phi1 0.000 Phi 45.000 phi2 90.000 scatter 0.000 fraction 1.000 +[111] +(gauss) phi1 0.000 Phi 54.7356 phi2 45.000 scatter 0.000 fraction 1.000 +[123] +(gauss) phi1 209.805 Phi 29.206 phi2 63.435 scatter 0.000 fraction 1.000