223031012
/
DAMASK_EICMD
mirror of https://github.com/achalhp/DAMASK_EICMD.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

kinetics_slip does not seem to be the problem

This commit is contained in:
Martin Diehl 2018-10-14 15:53:24 +02:00
parent 4c780226d1
commit 6599aa487c
1 changed files with 20 additions and 66 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

86
src/plastic_phenopowerlaw.f90
View File

@ -444,10 +444,7 @@ end subroutine plastic_phenopowerlaw_init
!> @brief calculates plastic velocity gradient and its tangent
!--------------------------------------------------------------------------------------------------
subroutine plastic_phenopowerlaw_LpAndItsTangent(Lp,dLp_dMp,Mp,instance,of)
use prec, only: &
dNeq0
use math, only: &
math_mul33xx33
implicit none
real(pReal), dimension(3,3), intent(out) :: &
Lp !< plastic velocity gradient
@ -462,10 +459,9 @@ subroutine plastic_phenopowerlaw_LpAndItsTangent(Lp,dLp_dMp,Mp,instance,of)
integer(pInt) :: &
i,k,l,m,n
real(pReal) :: &
tau, &
gdot_slip, &
dgdot_dtau_slip
real(pReal), dimension(param(instance)%totalNslip) :: &
dgdot_dtauslip_pos,dgdot_dtauslip_neg, &
gdot_slip_pos,gdot_slip_neg
real(pReal), dimension(param(instance)%totalNtwin) :: &
gdot_twin,dgdot_dtautwin
@ -477,42 +473,14 @@ subroutine plastic_phenopowerlaw_LpAndItsTangent(Lp,dLp_dMp,Mp,instance,of)
Lp = 0.0_pReal
dLp_dMp = 0.0_pReal
do i = 1_pInt, prm%totalNslip
tau = math_mul33xx33(Mp,prm%nonSchmid_pos(1:3,1:3,i))
if (tau > 1.0e-8_pReal) then
gdot_slip = prm%gdot0_slip &
* sign(abs(tau/stt%xi_slip(i,of))**prm%n_slip, tau)
if (size(prm%nonSchmidCoeff) > 0_pInt) gdot_slip = 0.5 * gdot_slip
dgdot_dtau_slip = gdot_slip*prm%n_slip/tau
Lp = Lp + (1.0_pReal-stt%sumF(of))*(gdot_slip)*prm%Schmid_slip(1:3,1:3,i)
forall (k=1_pInt:3_pInt,l=1_pInt:3_pInt,m=1_pInt:3_pInt,n=1_pInt:3_pInt) &
dLp_dMp(k,l,m,n) = dLp_dMp(k,l,m,n) &
+ dgdot_dtau_slip * prm%Schmid_slip(k,l,i) * prm%nonSchmid_pos(m,n,i)
endif
if (size(prm%nonSchmidCoeff) > 0_pInt) then
tau = math_mul33xx33(Mp,prm%nonSchmid_neg(1:3,1:3,i))
if (tau > 1.0e-8_pReal) then
gdot_slip = 0.5_pReal * prm%gdot0_slip &
* sign(abs(tau/stt%xi_slip(i,of))**prm%n_slip, tau)
dgdot_dtau_slip = gdot_slip*prm%n_slip/tau
Lp = Lp + (1.0_pReal-stt%sumF(of))*(gdot_slip)*prm%Schmid_slip(1:3,1:3,i)
forall (k=1_pInt:3_pInt,l=1_pInt:3_pInt,m=1_pInt:3_pInt,n=1_pInt:3_pInt) &
dLp_dMp(k,l,m,n) = dLp_dMp(k,l,m,n) &
+ dgdot_dtau_slip * prm%Schmid_slip(k,l,i) * prm%nonSchmid_neg(m,n,i)
endif
endif
enddo
call kinetics_slip(prm,stt,of,Mp,gdot_slip_pos,gdot_slip_neg,dgdot_dtauslip_pos,dgdot_dtauslip_neg)
slipSystems: do i = 1_pInt, prm%totalNslip
Lp = Lp + (1.0_pReal-stt%sumF(of))*(gdot_slip_pos(i)+gdot_slip_neg(i))*prm%Schmid_slip(1:3,1:3,i)
forall (k=1_pInt:3_pInt,l=1_pInt:3_pInt,m=1_pInt:3_pInt,n=1_pInt:3_pInt) &
dLp_dMp(k,l,m,n) = dLp_dMp(k,l,m,n) &
+ dgdot_dtauslip_pos(i) * prm%Schmid_slip(k,l,i) * prm%nonSchmid_pos(m,n,i) &
+ dgdot_dtauslip_neg(i) * prm%Schmid_slip(k,l,i) * prm%nonSchmid_neg(m,n,i)
enddo slipSystems
call kinetics_twin(prm,stt,of,Mp,gdot_twin,dgdot_dtautwin)
twinSystems: do i = 1_pInt, prm%totalNtwin
@ -531,8 +499,7 @@ end subroutine plastic_phenopowerlaw_LpAndItsTangent
!> @brief calculates the rate of change of microstructure
!--------------------------------------------------------------------------------------------------
subroutine plastic_phenopowerlaw_dotState(Mp,instance,of)
use math, only: &
math_mul33xx33
implicit none
real(pReal), dimension(3,3), intent(in) :: &
Mp !< Mandel stress
@ -544,10 +511,11 @@ subroutine plastic_phenopowerlaw_dotState(Mp,instance,of)
i
real(pReal) :: &
c_SlipSlip,c_TwinSlip,c_TwinTwin, &
xi_slip_sat_offset,tau
xi_slip_sat_offset
real(pReal), dimension(param(instance)%totalNslip) :: &
left_SlipSlip,right_SlipSlip
left_SlipSlip,right_SlipSlip, &
gdot_slip_pos,gdot_slip_neg
type(tParameters) :: prm
type(tPhenopowerlawState) :: dot,stt
@ -559,7 +527,7 @@ subroutine plastic_phenopowerlaw_dotState(Mp,instance,of)
!--------------------------------------------------------------------------------------------------
! system-independent (nonlinear) prefactors to M_Xx (X influenced by x) matrices
c_SlipSlip = prm%h0_slipslip * (1.0_pReal + prm%twinC*stt%sumF(of)** prm%twinB)
c_TwinSlip = prm%h0_TwinSlip * stt%sumGamma(of)**prm%twinE !ToDo: this makes no sense if totalNslip ==0
c_TwinSlip = prm%h0_TwinSlip * stt%sumGamma(of)**prm%twinE
c_TwinTwin = prm%h0_TwinTwin * stt%sumF(of)**prm%twinD
!--------------------------------------------------------------------------------------------------
@ -571,23 +539,9 @@ subroutine plastic_phenopowerlaw_dotState(Mp,instance,of)
!--------------------------------------------------------------------------------------------------
! shear rates
do i = 1_pInt, prm%totalNslip
tau = math_mul33xx33(Mp,prm%nonSchmid_pos(1:3,1:3,i))
if (tau > 1.0e-8_pReal) then
dot%gamma_slip(i,of) = abs(prm%gdot0_slip &
* sign(abs(tau/stt%xi_slip(i,of))**prm%n_slip, tau))
if (size(prm%nonSchmidCoeff) > 0_pInt) dot%gamma_slip(i,of) = 0.5 * dot%gamma_slip(i,of)
endif
if (size(prm%nonSchmidCoeff) > 0_pInt) then
tau = math_mul33xx33(Mp,prm%nonSchmid_neg(1:3,1:3,i))
if (tau > 1.0e-8_pReal) &
dot%gamma_slip(i,of) = abs(prm%gdot0_slip *0.5_pReal &
* sign(abs(tau/stt%xi_slip(i,of))**prm%n_slip, tau))
endif
enddo
call kinetics_slip(prm,stt,of,Mp,gdot_slip_pos,gdot_slip_neg)
dot%gamma_slip(:,of) = abs(gdot_slip_pos+gdot_slip_neg)
dot%sumGamma(of) = sum(dot%gamma_slip(:,of))
call kinetics_twin(prm,stt,of,Mp,dot%gamma_twin(:,of))
if (prm%totalNtwin > 0_pInt) dot%sumF(of) = merge(sum(dot%gamma_twin(:,of)/prm%gamma_twin_char), &
0.0_pReal, &