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DAMASK_EICMD
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bugfixes 

- L_tw/tr are not in lengths of Burgers vectors anymore
- need to define characteristic shear for tr
This commit is contained in:
Martin Diehl 2022-01-26 23:51:49 +01:00
parent 7d0d13bfed
commit 3bb2ae45d3
1 changed files with 10 additions and 10 deletions
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20
src/phase_mechanical_plastic_dislotwin.f90
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@ -49,7 +49,7 @@ submodule(phase:plastic) dislotwin
r, & !< exponent in twin nucleation rate
s, & !< exponent in trans nucleation rate
tau_0, & !< strength due to elements in solid solution
gamma_char, & !< characteristic shear for twins
gamma_char_tw, & !< characteristic shear for twins
B, & !< drag coefficient
d_caron !< distance of spontaneous annhihilation
real(pReal), allocatable, dimension(:,:) :: &
@ -265,7 +265,7 @@ module function plastic_dislotwin_init() result(myPlasticity)
prm%L_tw = pl%get_asFloat('L_tw')
prm%i_tw = pl%get_asFloat('i_tw')
prm%gamma_char= lattice_characteristicShear_Twin(prm%N_tw,phase_lattice(ph),phase_cOverA(ph))
prm%gamma_char_tw = lattice_characteristicShear_Twin(prm%N_tw,phase_lattice(ph),phase_cOverA(ph))
! expand: family => system
prm%b_tw = math_expand(prm%b_tw,prm%N_tw)
@ -280,7 +280,7 @@ module function plastic_dislotwin_init() result(myPlasticity)
if (any(prm%t_tw < 0.0_pReal)) extmsg = trim(extmsg)//' t_tw'
if (any(prm%r < 0.0_pReal)) extmsg = trim(extmsg)//' p_tw'
else twinActive
allocate(prm%gamma_char,prm%b_tw,prm%t_tw,prm%r,source=emptyRealArray)
allocate(prm%gamma_char_tw,prm%b_tw,prm%t_tw,prm%r,source=emptyRealArray)
allocate(prm%h_tw_tw(0,0))
end if twinActive
@ -569,7 +569,7 @@ module subroutine dislotwin_LpAndItsTangent(Lp,dLp_dMp,Mp,ph,en)
shearBandingContribution: if (dNeq0(prm%v_sb)) then
E_kB_T = prm%E_sb/(K_B*T)
call math_eigh33(eigValues,eigVectors,Mp) ! is Mp symmetric by design?
call math_eigh33(eigValues,eigVectors,Mp) ! is Mp symmetric by design?
do i = 1,6
P_sb = 0.5_pReal * math_outer(matmul(eigVectors,sb_sComposition(1:3,i)),&
@ -626,6 +626,8 @@ module subroutine dislotwin_dotState(Mp,T,ph,en)
dot_gamma_tw
real(pReal), dimension(param(ph)%sum_N_tr) :: &
dot_gamma_tr
real(pReal), parameter :: &
gamma_char_tr = 1.0_pReal !!! TODO
real(pReal) :: &
mu, &
nu, &
@ -686,10 +688,10 @@ module subroutine dislotwin_dotState(Mp,T,ph,en)
- dot_rho_dip_climb
if (prm%sum_N_tw > 0) call kinetics_tw(Mp,T,dot_gamma_sl,ph,en,dot_gamma_tw)
dot%f_tw(:,en) = f_matrix*dot_gamma_tw/prm%gamma_char
dot%f_tw(:,en) = f_matrix*dot_gamma_tw/prm%gamma_char_tw
if (prm%sum_N_tr > 0) call kinetics_tr(Mp,T,dot_gamma_sl,ph,en,dot_gamma_tr)
dot%f_tr(:,en) = f_matrix*dot_gamma_tr
dot%f_tr(:,en) = f_matrix*dot_gamma_tr/gamma_char_tr
end associate
@ -941,8 +943,7 @@ pure subroutine kinetics_tw(Mp,T,dot_gamma_sl,ph,en,&
dP_dTau = prm%r(i) * (tau_hat/tau)**prm%r(i)/tau * P
s = prm%fcc_twinNucleationSlipPair(1:2,i)
dot_N_0 = sum(abs(dot_gamma_sl(s(2:1:-1)))*(stt%rho_mob(s,en)+stt%rho_dip(s,en))) &
/ (prm%L_tw*prm%b_sl(i))
dot_N_0 = sum(abs(dot_gamma_sl(s(2:1:-1)))*(stt%rho_mob(s,en)+stt%rho_dip(s,en)))/prm%L_tw
P_ncs = 1.0_pReal-exp(-prm%V_cs/(K_B*T)*(tau_r-tau))
dP_ncs_dtau = prm%V_cs / (K_B * T) * (P_ncs - 1.0_pReal)
@ -1023,8 +1024,7 @@ pure subroutine kinetics_tr(Mp,T,dot_gamma_sl,ph,en,&
dP_dTau = prm%s(i) * (tau_hat/tau)**prm%s(i)/tau * P
s = prm%fcc_twinNucleationSlipPair(1:2,i)
dot_N_0 = sum(abs(dot_gamma_sl(s(2:1:-1)))*(stt%rho_mob(s,en)+stt%rho_dip(s,en))) &
/ (prm%L_tr*prm%b_sl(i))
dot_N_0 = sum(abs(dot_gamma_sl(s(2:1:-1)))*(stt%rho_mob(s,en)+stt%rho_dip(s,en)))/prm%L_tr
P_ncs = 1.0_pReal-exp(-prm%V_cs/(K_B*T)*(tau_r-tau))
dP_ncs_dtau = prm%V_cs / (K_B * T) * (P_ncs - 1.0_pReal)