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dPdF calculations made consistent with constitutive_TandItsTangent

This commit is contained in:
Pratheek Shanthraj 2012-03-21 15:00:36 +00:00
parent 8a2f2c5a95
commit 131c9ac93e
1 changed files with 16 additions and 20 deletions
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28
code/crystallite.f90
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@ -483,7 +483,6 @@ use math, only: math_inv33, &
math_Mandel6to33, &
math_Mandel33to6, &
math_I3, &
math_Mandel66to3333, &
math_mul3333xx3333
use FEsolving, only: FEsolving_execElem, &
FEsolving_execIP
@ -500,7 +499,8 @@ use constitutive, only: constitutive_sizeState, &
constitutive_partionedState0, &
constitutive_homogenizedC, &
constitutive_dotState, &
constitutive_dotState_backup
constitutive_dotState_backup, &
constitutive_TandItsTangent
implicit none
!*** input variables ***!
@ -541,9 +541,9 @@ logical, dimension(homogenization_maxNgrains,mesh_maxNips,mesh_NcpElems) :: &
convergenceFlag_backup
! local variables used for calculating analytic Jacobian
real(pReal), dimension(3,3):: Fpinv_rate, &
FDot_inv
real(pReal), dimension(3,3,3,3) :: C, &
dSdFe, &
FDot_inv, &
junk
real(pReal), dimension(3,3,3,3) :: dSdFe, &
dFedF, &
dFedFdot, &
dSdF, &
@ -935,18 +935,16 @@ if(updateJaco) then
! --- CALCULATE ANALYTIC dPdF ---
!$OMP PARALLEL DO PRIVATE(dFedF,dSdF,dSdFe,myNgrains,C)
!$OMP PARALLEL DO PRIVATE(dFedF,dSdF,dSdFe,myNgrains)
do e = FEsolving_execElem(1),FEsolving_execElem(2) ! iterate over elements to be processed
myNgrains = homogenization_Ngrains(mesh_element(3,e))
do i = FEsolving_execIP(1,e),FEsolving_execIP(2,e) ! iterate over IPs of this element to be processed
do g = 1_pInt,myNgrains
C = math_Mandel66to3333(constitutive_homogenizedC(g,i,e))
dFedF = 0.0_pReal
do p=1_pInt,3_pInt; do o=1_pInt,3_pInt
dFedF(p,o,o,1:3) = crystallite_invFp(1:3,p,g,i,e) ! dFe_ij/dF_kl = dF_im/dF_kl * (Fp current^-1)_mj
dSdFe(o,p,1:3,1:3) = math_mul33x33(C(o,p,1:3,1:3), &
math_transpose33(crystallite_subFe0(1:3,1:3,g,i,e))) ! dS_ij/dFe_kl
dFedF(p,o,o,1:3) = crystallite_invFp(1:3,p,g,i,e) ! dFe^T_ij/dF_kl = delta_jk * (Fp current^-1)_li
enddo; enddo
call constitutive_TandItsTangent(junk,dSdFe,crystallite_subFe0(1:3,1:3,g,i,e),g,i,e) ! call constitutive law to calculate 2nd Piola-Kirchhoff stress and its derivative
dSdF = math_mul3333xx3333(dSdFe,dFedF) ! dS/dF = dS/dFe * dFe/dF
do p=1_pInt,3_pInt; do o=1_pInt,3_pInt
crystallite_dPdF(1:3,1:3,o,p,g,i,e) = math_mul33x33(math_mul33x33(dFedF(1:3,1:3,o,p),&
@ -960,12 +958,11 @@ if(updateJaco) then
endif
if (rate_sensitivity) then
!$OMP PARALLEL DO PRIVATE(dFedFdot,dSdFdot,dSdFe,Fpinv_rate,FDot_inv,counter,dFp_invdFdot,C,myNgrains)
!$OMP PARALLEL DO PRIVATE(dFedFdot,dSdFdot,dSdFe,Fpinv_rate,FDot_inv,counter,dFp_invdFdot,myNgrains)
do e = FEsolving_execElem(1),FEsolving_execElem(2) ! iterate over elements to be processed
myNgrains = homogenization_Ngrains(mesh_element(3,e))
do i = FEsolving_execIP(1,e),FEsolving_execIP(2,e) ! iterate over IPs of this element to be processed
do g = 1_pInt,myNgrains
C = math_Mandel66to3333(constitutive_homogenizedC(g,i,e))
Fpinv_rate = math_mul33x33(crystallite_invFp(1:3,1:3,g,i,e),crystallite_Lp(1:3,1:3,g,i,e)) ! dFp^-1 = dFp^-1/dt *dt... dFp may overshoot dF by small ammount as
FDot_inv = crystallite_subF(1:3,1:3,g,i,e) - crystallite_F0(1:3,1:3,g,i,e)
counter = 0.0_pReal
@ -979,20 +976,19 @@ if(updateJaco) then
enddo; enddo
if (counter .gt. 0.0_pReal) FDot_inv = FDot_inv/counter
do p=1_pInt,3_pInt; do o=1_pInt,3_pInt
dFp_invdFdot(o,p,1:3,1:3) = Fpinv_rate(o,p)*FDot_inv ! dFe_ij/dF_kl = dF_im/dF_kl * (Fp current^-1)_mj
dSdFe(o,p,1:3,1:3) = math_mul33x33(C(o,p,1:3,1:3), &
math_transpose33(crystallite_subFe0(1:3,1:3,g,i,e))) ! dS_ij/dFe_kl
dFp_invdFdot(o,p,1:3,1:3) = Fpinv_rate(o,p)*FDot_inv
enddo; enddo
do p=1_pInt,3_pInt; do o=1_pInt,3_pInt
dFedFdot(1:3,1:3,o,p) = math_transpose33(math_mul33x33(crystallite_subF(1:3,1:3,g,i,e), &
dFp_invdFdot(1:3,1:3,o,p)))
enddo; enddo
call constitutive_TandItsTangent(junk,dSdFe,crystallite_subFe0(1:3,1:3,g,i,e),g,i,e) ! call constitutive law to calculate 2nd Piola-Kirchhoff stress and its derivative
dSdFdot = math_mul3333xx3333(dSdFe,dFedFdot)
do p=1_pInt,3_pInt; do o=1_pInt,3_pInt
crystallite_dPdF(1:3,1:3,o,p,g,i,e) = crystallite_dPdF(1:3,1:3,o,p,g,i,e) - &
(math_mul33x33(math_mul33x33(dFedFdot(1:3,1:3,o,p), &
math_Mandel6to33(crystallite_Tstar_v)),math_transpose33( &
crystallite_invFp(1:3,1:3,g,i,e))) + & ! dP/dF = dFe/dFdot * S * Fp^-T...
crystallite_invFp(1:3,1:3,g,i,e))) + & ! dP/dFdot = dFe/dFdot * S * Fp^-T...
math_mul33x33(math_mul33x33(crystallite_subFe0(1:3,1:3,g,i,e), &
math_Mandel6to33(crystallite_Tstar_v)),math_transpose33(dFp_invdFdot(1:3,1:3,o,p))) & ! + Fe * S * dFp^-T/dFdot...
+ math_mul33x33(crystallite_subFe0(1:3,1:3,g,i,e), &