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DAMASK_EICMD
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result processing now in stressIP 

i.e. no extra polar decompositions performed any more
This commit is contained in:
Luc Hantcherli 2007-04-11 14:51:49 +00:00
parent 9704a4e83c
commit f9f3e2bd9b
1 changed files with 34 additions and 34 deletions
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68
trunk/CPFEM.f90
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@ -147,19 +147,19 @@
integer(pInt), parameter :: i_now = 1_pInt,i_then = 2_pInt integer(pInt), parameter :: i_now = 1_pInt,i_then = 2_pInt
character(len=128) msg character(len=128) msg
integer(pInt) CPFEM_cn,cp_en,CPFEM_in,grain,i integer(pInt) CPFEM_cn,cp_en,CPFEM_in,grain,i
logical updateJaco logical updateJaco,error
real(pReal) CPFEM_dt,dt,t,volfrac real(pReal) CPFEM_dt,dt,t,volfrac
real(pReal), dimension(6) :: cs,Tstar_v real(pReal), dimension(6) :: cs,Tstar_v
real(pReal), dimension(6,6) :: cd,cd_IP real(pReal), dimension(6,6) :: cd
real(pReal), dimension(3,3) :: deltaFg real(pReal), dimension(3,3) :: Fe,U,R,deltaFg
real(pReal), dimension(3) :: Euler real(pReal), dimension(3) :: Euler
real(pReal), dimension(3,3,2) :: Fg,Fp real(pReal), dimension(3,3,2) :: Fg,Fp
real(pReal), dimension(constitutive_Nstatevars(grain,CPFEM_in,cp_en),2) :: state real(pReal), dimension(constitutive_maxNstatevars,2) :: state
updateJaco = (mod(CPFEM_cn,ijaco)==0) ! update consistent tangent every ijaco'th iteration updateJaco = (mod(CPFEM_cn,ijaco)==0) ! update consistent tangent every ijaco'th iteration
CPFEM_stress_all(:,CPFEM_in,cp_en) = 0.0_pReal ! average Cauchy stress CPFEM_stress_all(:,CPFEM_in,cp_en) = 0.0_pReal ! average Cauchy stress
cd_IP = 0.0_pReal ! average consistent tangent if (updateJaco) CPFEM_jaco_old(:,:,CPFEM_in,cp_en) = 0.0_pReal ! average consistent tangent
! -------------- grain loop ----------------- ! -------------- grain loop -----------------
do grain = 1,constitutive_Ngrains(CPFEM_in,cp_en) do grain = 1,constitutive_Ngrains(CPFEM_in,cp_en)
@ -189,7 +189,7 @@
Fg(:,:,i_then) = CPFEM_ffn_all(:,:,CPFEM_in,cp_en) ! final Fg Fg(:,:,i_then) = CPFEM_ffn_all(:,:,CPFEM_in,cp_en) ! final Fg
endif endif
call CPFEM_stressCrystallite(msg,cs,cd,Tstar_v,Fp(:,:,i_then),state(:,i_then),Euler,& call CPFEM_stressCrystallite(msg,cs,cd,Tstar_v,Fp(:,:,i_then),Fe,state(:,i_then),&
dt,cp_en,CPFEM_in,grain,updateJaco .and. t==CPFEM_dt,& dt,cp_en,CPFEM_in,grain,updateJaco .and. t==CPFEM_dt,&
Fg(:,:,i_now),Fg(:,:,i_then),Fp(:,:,i_now),state(:,i_now)) Fg(:,:,i_now),Fg(:,:,i_then),Fp(:,:,i_now),state(:,i_now))
if (msg == 'ok') then ! solution converged if (msg == 'ok') then ! solution converged
@ -216,15 +216,24 @@
CPFEM_Fp_new(:,:,grain,CPFEM_in,cp_en) = Fp(:,:,i_then) CPFEM_Fp_new(:,:,grain,CPFEM_in,cp_en) = Fp(:,:,i_then)
constitutive_state_new(:,grain,CPFEM_in,cp_en) = state(:,i_then) constitutive_state_new(:,grain,CPFEM_in,cp_en) = state(:,i_then)
CPFEM_sigma_new(:,grain,CPFEM_in,cp_en) = Tstar_v CPFEM_sigma_new(:,grain,CPFEM_in,cp_en) = Tstar_v
! ---- update results plotted in MENTAT ---- ! ---- update results plotted in MENTAT ----
CPFEM_results(1:3,grain,CPFEM_in,cp_en) = Euler call math_pDecomposition(Fe,U,R,error) ! polar decomposition
if (error) then
write(6,*) 'polar decomposition'
write(6,*) 'Grain: ',grain
write(6,*) 'Integration point: ',CPFEM_in
write(6,*) 'Element: ',mesh_element(1,cp_en)
call IO_error(600)
return
endif
CPFEM_results(1:3,grain,CPFEM_in,cp_en) = math_RtoEuler(transpose(R)) ! orientation
CPFEM_results(4:3+constitutive_Nresults(grain,CPFEM_in,cp_en),grain,CPFEM_in,cp_en) = & CPFEM_results(4:3+constitutive_Nresults(grain,CPFEM_in,cp_en),grain,CPFEM_in,cp_en) = &
constitutive_results(1:constitutive_Nresults(grain,CPFEM_in,cp_en),grain,CPFEM_in,cp_en)!ÄÄÄÄ constitutive_post_results(Tstar_v,state(:,i_then),CPFEM_dt,grain,CPFEM_in,cp_en)
! ---- contribute to IP result ---- ! ---- contribute to IP result ----
volfrac = constitutive_matVolFrac(grain,CPFEM_in,cp_en)*constitutive_texVolFrac(grain,CPFEM_in,cp_en) volfrac = constitutive_matVolFrac(grain,CPFEM_in,cp_en)*constitutive_texVolFrac(grain,CPFEM_in,cp_en)
CPFEM_stress_all(:,CPFEM_in,cp_en) = CPFEM_stress_all(:,CPFEM_in,cp_en)+volfrac*cs ! average Cauchy stress CPFEM_stress_all(:,CPFEM_in,cp_en) = CPFEM_stress_all(:,CPFEM_in,cp_en)+volfrac*cs ! average Cauchy stress
if (updateJaco) cd_IP = cd_IP+volfrac*cd ! average consistent tangent if (updateJaco) CPFEM_jaco_old(:,:,CPFEM_in,cp_en) = CPFEM_jaco_old(:,:,CPFEM_in,cp_en)+volfrac*cd ! average consistent tangent
enddo ! grain loop enddo ! grain loop
@ -244,8 +253,8 @@
dcs_de,& ! consistent tangent dcs_de,& ! consistent tangent
Tstar_v,& ! second Piola-Kirchoff stress tensor Tstar_v,& ! second Piola-Kirchoff stress tensor
Fp_new,& ! new plastic deformation gradient Fp_new,& ! new plastic deformation gradient
Fe_new,& ! new "elastic" deformation gradient
state_new,& ! new state variable array state_new,& ! new state variable array
Euler,& ! Euler angles
! !
dt,& ! time increment dt,& ! time increment
cp_en,& ! element number cp_en,& ! element number
@ -259,42 +268,32 @@
use prec, only: pReal,pInt,pert_e use prec, only: pReal,pInt,pert_e
use constitutive, only: constitutive_Nstatevars use constitutive, only: constitutive_Nstatevars
use math, only: math_Mandel6to33, mapMandel,math_pDecomposition,math_RtoEuler use math, only: math_Mandel6to33,mapMandel
implicit none implicit none
character(len=*) msg character(len=*) msg
logical updateJaco,error logical updateJaco,error
integer(pInt) cp_en,CPFEM_in,grain,i integer(pInt) cp_en,CPFEM_in,grain,i
real(pReal) dt real(pReal) dt
real(pReal), dimension(3) :: Euler real(pReal), dimension(3,3) :: Fg_old,Fg_new,Fg_pert,Fp_old,Fp_new,Fp_pert,Fe_new,Fe_pert,E_pert
real(pReal), dimension(3,3) :: Fg_old,Fg_new,Fg_pert,Fp_old,Fp_new,Fp_pert,Fe_new,Fe_pert,R,U,E_pert real(pReal), dimension(6) :: cs,Tstar_v,Tstar_v_pert
real(pReal), dimension(6) :: cs,Tstar_v,Tstar_v_pert
real(pReal), dimension(6,6) :: dcs_de real(pReal), dimension(6,6) :: dcs_de
real(pReal), dimension(constitutive_Nstatevars(grain, CPFEM_in, cp_en)) :: state_old,state_new,state_pert real(pReal), dimension(constitutive_Nstatevars(grain,CPFEM_in,cp_en)) :: state_old,state_new,state_pert
call CPFEM_timeIntegration(msg,Fp_new,Fe_new,Tstar_v,state_new, & call CPFEM_timeIntegration(msg,Fp_new,Fe_new,Tstar_v,state_new, & ! def gradients and PK2 at end of time step
dt,cp_en,CPFEM_in,grain,Fg_new,Fp_old,state_old) dt,cp_en,CPFEM_in,grain,Fg_new,Fp_old,state_old)
if (msg /= 'ok') return if (msg /= 'ok') return
cs = CPFEM_CauchyStress(Tstar_v,Fe_new) ! Cauchy stress cs = CPFEM_CauchyStress(Tstar_v,Fe_new) ! Cauchy stress
call math_pDecomposition(Fe_new,U,R,error) ! polar decomposition if (updateJaco) then ! consistent tangent using numerical perturbation of Fg
if (error) then do i = 1,6 ! Fg component
msg = 'polar decomposition'
return
endif
Euler = math_RtoEuler(transpose(R)) ! orientation
if (updateJaco) then
! *** Calculation of the consistent tangent with perturbation ***
! *** Perturbation on the component of Fg ***
do i = 1,6
E_pert = 0.0_pReal E_pert = 0.0_pReal
E_pert(mapMandel(1,i),mapMandel(2,i)) = E_pert(mapMandel(1,i),mapMandel(2,i)) + pert_e/2.0_pReal E_pert(mapMandel(1,i),mapMandel(2,i)) = E_pert(mapMandel(1,i),mapMandel(2,i)) + pert_e/2.0_pReal
E_pert(mapMandel(2,i),mapMandel(1,i)) = E_pert(mapMandel(2,i),mapMandel(1,i)) + pert_e/2.0_pReal E_pert(mapMandel(2,i),mapMandel(1,i)) = E_pert(mapMandel(2,i),mapMandel(1,i)) + pert_e/2.0_pReal
Fg_pert = Fg_new+matmul(E_pert,Fg_old) ! perturbated Fg Fg_pert = Fg_new+matmul(E_pert,Fg_old) ! perturbated Fg
Tstar_v_pert = Tstar_v ! initial guess at center Tstar_v_pert = Tstar_v ! initial guess from end of time step
state_pert = state_new ! initial guess at center state_pert = state_new ! initial guess from end of time step
call CPFEM_timeIntegration(msg,Fp_pert,Fe_pert,Tstar_v_pert,state_pert, & call CPFEM_timeIntegration(msg,Fp_pert,Fe_pert,Tstar_v_pert,state_pert, &
dt,cp_en,CPFEM_in,grain,Fg_pert,Fp_old,state_old) dt,cp_en,CPFEM_in,grain,Fg_pert,Fp_old,state_old)
@ -302,10 +301,11 @@
msg = 'consistent tangent --> '//msg msg = 'consistent tangent --> '//msg
return return
endif endif
! *** MISSING:Consistent tangent, (perturbated) Cauchy stress is Mandel hence dcs_de(:,4:6) is too large by sqrt(2) ! Remark: (perturbated) Cauchy stress is Mandel hence dcs_de(:,4:6) is too large by sqrt(2)
dcs_de(:,i) = (CPFEM_CauchyStress(Tstar_v_pert,Fe_pert)-cs)/pert_e dcs_de(:,i) = (CPFEM_CauchyStress(Tstar_v_pert,Fe_pert)-cs)/pert_e
enddo enddo
endif endif
return return
END SUBROUTINE END SUBROUTINE