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DAMASK_EICMD
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some improvements in ductile model

This commit is contained in:
Luv Sharma 2014-10-01 15:18:33 +00:00
parent baa08d8155
commit ee60ea8d5b
2 changed files with 21 additions and 12 deletions
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2
code/constitutive.f90
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@ -726,7 +726,7 @@ subroutine constitutive_collectDotState(Tstar_v, Lp, FeArray, FpArray, Temperatu
case (LOCAL_DAMAGE_BRITTLE_ID)
call damage_brittle_dotState(ipc, ip, el)
case (LOCAL_DAMAGE_DUCTILE_ID)
call damage_ductile_dotState(ipc, ip, el)
call damage_ductile_dotState(Lp, ipc, ip, el)
end select

31
code/damage_ductile.f90
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@ -29,7 +29,7 @@ module damage_ductile
real(pReal), dimension(:), allocatable, private :: &
damage_ductile_aTol, &
damage_ductile_critstrain
damage_ductile_critpStrain
enum, bind(c)
enumerator :: undefined_ID, &
@ -120,7 +120,7 @@ subroutine damage_ductile_init(fileUnit)
damage_ductile_output = ''
allocate(damage_ductile_outputID(maxval(phase_Noutput),maxNinstance), source=undefined_ID)
allocate(damage_ductile_Noutput(maxNinstance), source=0_pInt)
allocate(damage_ductile_critStrain(maxNinstance), source=0.0_pReal)
allocate(damage_ductile_critpStrain(maxNinstance), source=0.0_pReal)
allocate(damage_ductile_aTol(maxNinstance), source=0.0_pReal)
rewind(fileUnit)
@ -154,8 +154,8 @@ subroutine damage_ductile_init(fileUnit)
IO_lc(IO_stringValue(line,positions,2_pInt))
end select
case ('critical_strain_energy')
damage_ductile_critStrain(instance) = IO_floatValue(line,positions,2_pInt)
case ('critical_plastic_strain')
damage_ductile_critpStrain(instance) = IO_floatValue(line,positions,2_pInt)
case ('atol_damage')
damage_ductile_aTol(instance) = IO_floatValue(line,positions,2_pInt)
@ -183,8 +183,8 @@ subroutine damage_ductile_init(fileUnit)
endif
enddo outputsLoop
! Determine size of state array
sizeDotState = 1_pInt
sizeState = 2_pInt
sizeDotState = 2_pInt
sizeState = 3_pInt
damageState(phase)%sizeState = sizeState
damageState(phase)%sizeDotState = sizeDotState
@ -229,7 +229,8 @@ subroutine damage_ductile_stateInit(phase,instance)
real(pReal), dimension(damageState(phase)%sizeState) :: tempState
tempState(1) = 1.0_pReal
tempState(2) = 1.0_pReal
tempState(2) = 0.0_pReal
tempState(3) = 1.0_pReal
damageState(phase)%state = spread(tempState,2,size(damageState(phase)%state(1,:)))
damageState(phase)%state0 = damageState(phase)%state
@ -250,21 +251,26 @@ subroutine damage_ductile_aTolState(phase,instance)
real(pReal), dimension(damageState(phase)%sizeState) :: tempTol
tempTol = damage_ductile_aTol(instance)
tempTol(2) = 0.000001_pReal
damageState(phase)%aTolState = tempTol
end subroutine damage_ductile_aTolState
!--------------------------------------------------------------------------------------------------
!> @brief calculates derived quantities from state
!--------------------------------------------------------------------------------------------------
subroutine damage_ductile_dotState(ipc, ip, el)
subroutine damage_ductile_dotState(Lp,ipc, ip, el)
use material, only: &
mappingConstitutive, &
phase_damageInstance, &
damageState
use math, only: &
math_norm33
use lattice, only: &
lattice_DamageMobility
implicit none
real(pReal), intent(in), dimension(3,3) :: &
Lp
integer(pInt), intent(in) :: &
ipc, & !< component-ID of integration point
ip, & !< integration point
@ -279,6 +285,9 @@ subroutine damage_ductile_dotState(ipc, ip, el)
(1.0_pReal/lattice_DamageMobility(phase))* &
(damageState(phase)%state(2,constituent) - &
damageState(phase)%state(1,constituent))
damageState(phase)%dotState(2,constituent) = &
math_norm33(Lp)
end subroutine damage_ductile_dotState
@ -315,9 +324,9 @@ subroutine damage_ductile_microstructure(Tstar_v, Fe, Fp, ipc, ip, el)
phase = mappingConstitutive(2,ipc,ip,el)
constituent = mappingConstitutive(1,ipc,ip,el)
plasticStrain = math_mul33x33(math_transpose33(Fp),Fp)-math_I3
damageState(phase)%state(2,constituent) = min(damageState(phase)%state(2,constituent), &
damage_ductile_critstrain(phase)/ &
math_norm33(plasticStrain))
damageState(phase)%state(3,constituent) = min(damageState(phase)%state(3,constituent), &
damage_ductile_critpStrain(phase)/ &
damageState(phase)%state(2,constituent)) !< akin to damage surface
end subroutine damage_ductile_microstructure