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This commit is contained in:
Vitesh Shah 2019-08-20 14:29:11 +02:00
parent b854e7ee08 d2affaa414
commit be5e68249f
1 changed files with 8 additions and 10 deletions
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18
src/plastic_dislotwin.f90
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@ -59,7 +59,7 @@ module plastic_dislotwin
q_sb, & !< q-exponent in shear band velocity q_sb, & !< q-exponent in shear band velocity
CEdgeDipMinDistance, & !< CEdgeDipMinDistance, & !<
i_tw, & !< i_tw, & !<
tau_0, & !<strength due to elements in solid solution tau_0, & !< strength due to elements in solid solution
L_tw, & !< Length of twin nuclei in Burgers vectors L_tw, & !< Length of twin nuclei in Burgers vectors
L_tr, & !< Length of trans nuclei in Burgers vectors L_tr, & !< Length of trans nuclei in Burgers vectors
xc_twin, & !< critical distance for formation of twin nucleus xc_twin, & !< critical distance for formation of twin nucleus
@ -276,7 +276,6 @@ subroutine plastic_dislotwin_init
prm%CEdgeDipMinDistance = config%getFloat('cedgedipmindistance') prm%CEdgeDipMinDistance = config%getFloat('cedgedipmindistance')
prm%D0 = config%getFloat('d0') prm%D0 = config%getFloat('d0')
prm%Qsd = config%getFloat('qsd') prm%Qsd = config%getFloat('qsd')
prm%omega = config%getFloat('omega',defaultVal=1000.0_pReal)
prm%atomicVolume = config%getFloat('catomicvolume') * prm%b_sl**3.0_pReal prm%atomicVolume = config%getFloat('catomicvolume') * prm%b_sl**3.0_pReal
prm%ExtendedDislocations = config%getInt('extend_dislocations',defaultVal = 0) prm%ExtendedDislocations = config%getInt('extend_dislocations',defaultVal = 0)
if (prm%ExtendedDislocations == 1) then if (prm%ExtendedDislocations == 1) then
@ -285,11 +284,11 @@ subroutine plastic_dislotwin_init
endif endif
! multiplication factor according to slip system ! multiplication factor according to slip system
if (lattice_structure(p) == LATTICE_FCC_ID .or. lattice_structure(p) == LATTICE_HEX_ID ) then prm%omega = config%getFloat('omega', defaultVal = 1000.0_pReal) &
prm%omega = prm%omega * 12.0_pReal * merge(12.0_pReal, &
else 8.0_pReal, &
prm%omega = prm%omega * 8.0_pReal lattice_structure(p) == LATTICE_FCC_ID .or. lattice_structure(p) == LATTICE_HEX_ID)
endif
! expand: family => system ! expand: family => system
prm%rho_mob_0 = math_expand(prm%rho_mob_0, prm%N_sl) prm%rho_mob_0 = math_expand(prm%rho_mob_0, prm%N_sl)
@ -804,10 +803,9 @@ subroutine plastic_dislotwin_dotState(Mp,T,instance,of)
dot_rho_dip_formation(i) = 0.0_pReal dot_rho_dip_formation(i) = 0.0_pReal
endif endif
if (dEq0(rho_dip_distance-rho_dip_distance_min(i))) then if (dEq0(rho_dip_distance-rho_dip_distance_min(i))) then !ToDo: use or here for climb switch (second if else not needed)
dot_rho_dip_climb(i) = 0.0_pReal dot_rho_dip_climb(i) = 0.0_pReal
else else
! sigma_cl = norm2(matmul(Mp,prm%n0_sl(1:3,i))) ! ToDo: MD: correct?
sigma_cl = DOT_PRODUCT(prm%n0_sl(1:3,i),matmul(Mp,prm%n0_sl(1:3,i))) sigma_cl = DOT_PRODUCT(prm%n0_sl(1:3,i),matmul(Mp,prm%n0_sl(1:3,i)))
if (prm%ExtendedDislocations /= 0) then if (prm%ExtendedDislocations /= 0) then
Gamma = prm%SFE_0K + prm%dSFE_dT * T Gamma = prm%SFE_0K + prm%dSFE_dT * T
@ -815,9 +813,9 @@ subroutine plastic_dislotwin_dotState(Mp,T,instance,of)
else else
b_d = 1.0_pReal b_d = 1.0_pReal
endif endif
v_cl = 2.0_pReal*prm%omega*b_d**2.0_pReal*exp(-prm%Qsd/(kB*T)) & v_cl = 2.0_pReal*prm%omega*b_d**2.0_pReal*exp(-prm%Qsd/(kB*T)) &
* (exp(abs(sigma_cl)*prm%b_sl(i)**3.0_pReal/(kB*T)) - 1.0_pReal) * (exp(abs(sigma_cl)*prm%b_sl(i)**3.0_pReal/(kB*T)) - 1.0_pReal)
dot_rho_dip_climb(i) = 4.0_pReal*v_cl*stt%rho_dip(i,of) & dot_rho_dip_climb(i) = 4.0_pReal*v_cl*stt%rho_dip(i,of) &
/ (rho_dip_distance-rho_dip_distance_min(i)) / (rho_dip_distance-rho_dip_distance_min(i))
endif endif