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using names from DAMASK paper

This commit is contained in:
Martin Diehl 2019-03-27 23:09:45 +01:00
parent 3700bacccc
commit daab9263d3
1 changed files with 48 additions and 49 deletions
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97
src/plastic_isotropic.f90
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@ -22,25 +22,25 @@ module plastic_isotropic
enum, bind(c) enum, bind(c)
enumerator :: & enumerator :: &
undefined_ID, & undefined_ID, &
flowstress_ID, & xi_ID, &
strainrate_ID strainrate_ID
end enum end enum
type, private :: tParameters type, private :: tParameters
real(pReal) :: & real(pReal) :: &
fTaylor, & !< Taylor factor M, & !< Taylor factor
tau0, & !< initial critical stress xi_0, & !< initial critical stress
gdot0, & !< reference strain rate gdot0, & !< reference strain rate
n, & !< stress exponent n, & !< stress exponent
h0, & h0, &
h0_slopeLnRate, & h0_slopeLnRate, &
tausat, & !< maximum critical stress xi_inf, & !< maximum critical stress
a, & a, &
tausat_SinhFitA, & c_1, &
tausat_SinhFitB, & c_4, &
tausat_SinhFitC, & c_3, &
tausat_SinhFitD, & c_2, &
aTolFlowstress, & aTol_xi, &
aTolShear aTolShear
integer :: & integer :: &
of_debug = 0 of_debug = 0
@ -52,7 +52,7 @@ module plastic_isotropic
type, private :: tIsotropicState type, private :: tIsotropicState
real(pReal), pointer, dimension(:) :: & real(pReal), pointer, dimension(:) :: &
flowstress, & xi, &
accumulatedShear accumulatedShear
end type tIsotropicState end type tIsotropicState
@ -154,19 +154,19 @@ subroutine plastic_isotropic_init
prm%of_debug = phasememberAt(debug_g,debug_i,debug_e) prm%of_debug = phasememberAt(debug_g,debug_i,debug_e)
#endif #endif
prm%tau0 = config%getFloat('tau0') prm%xi_0 = config%getFloat('tau0')
prm%tausat = config%getFloat('tausat') prm%xi_inf = config%getFloat('tausat')
prm%gdot0 = config%getFloat('gdot0') prm%gdot0 = config%getFloat('gdot0')
prm%n = config%getFloat('n') prm%n = config%getFloat('n')
prm%h0 = config%getFloat('h0') prm%h0 = config%getFloat('h0')
prm%fTaylor = config%getFloat('m') prm%M = config%getFloat('m')
prm%h0_slopeLnRate = config%getFloat('h0_slopelnrate', defaultVal=0.0_pReal) prm%h0_slopeLnRate = config%getFloat('h0_slopelnrate', defaultVal=0.0_pReal)
prm%tausat_SinhFitA = config%getFloat('tausat_sinhfita',defaultVal=0.0_pReal) prm%c_1 = config%getFloat('tausat_sinhfita',defaultVal=0.0_pReal)
prm%tausat_SinhFitB = config%getFloat('tausat_sinhfitb',defaultVal=0.0_pReal) prm%c_4 = config%getFloat('tausat_sinhfitb',defaultVal=0.0_pReal)
prm%tausat_SinhFitC = config%getFloat('tausat_sinhfitc',defaultVal=0.0_pReal) prm%c_3 = config%getFloat('tausat_sinhfitc',defaultVal=0.0_pReal)
prm%tausat_SinhFitD = config%getFloat('tausat_sinhfitd',defaultVal=0.0_pReal) prm%c_2 = config%getFloat('tausat_sinhfitd',defaultVal=0.0_pReal)
prm%a = config%getFloat('a') prm%a = config%getFloat('a')
prm%aTolFlowStress = config%getFloat('atol_flowstress',defaultVal=1.0_pReal) prm%aTol_xi = config%getFloat('atol_flowstress',defaultVal=1.0_pReal)
prm%aTolShear = config%getFloat('atol_shear', defaultVal=1.0e-6_pReal) prm%aTolShear = config%getFloat('atol_shear', defaultVal=1.0e-6_pReal)
prm%dilatation = config%keyExists('/dilatation/') prm%dilatation = config%keyExists('/dilatation/')
@ -175,13 +175,12 @@ subroutine plastic_isotropic_init
! sanity checks ! sanity checks
extmsg = '' extmsg = ''
if (prm%aTolShear <= 0.0_pReal) extmsg = trim(extmsg)//' aTolShear' if (prm%aTolShear <= 0.0_pReal) extmsg = trim(extmsg)//' aTolShear'
if (prm%tau0 < 0.0_pReal) extmsg = trim(extmsg)//' tau0' if (prm%xi_0 < 0.0_pReal) extmsg = trim(extmsg)//' xi_0'
if (prm%gdot0 <= 0.0_pReal) extmsg = trim(extmsg)//' gdot0' if (prm%gdot0 <= 0.0_pReal) extmsg = trim(extmsg)//' gdot0'
if (prm%n <= 0.0_pReal) extmsg = trim(extmsg)//' n' if (prm%n <= 0.0_pReal) extmsg = trim(extmsg)//' n'
if (prm%tausat <= prm%tau0) extmsg = trim(extmsg)//' tausat'
if (prm%a <= 0.0_pReal) extmsg = trim(extmsg)//' a' if (prm%a <= 0.0_pReal) extmsg = trim(extmsg)//' a'
if (prm%fTaylor <= 0.0_pReal) extmsg = trim(extmsg)//' m' if (prm%M <= 0.0_pReal) extmsg = trim(extmsg)//' m'
if (prm%aTolFlowstress <= 0.0_pReal) extmsg = trim(extmsg)//' atol_flowstress' if (prm%aTol_xi <= 0.0_pReal) extmsg = trim(extmsg)//' atol_xi'
if (prm%aTolShear <= 0.0_pReal) extmsg = trim(extmsg)//' atol_shear' if (prm%aTolShear <= 0.0_pReal) extmsg = trim(extmsg)//' atol_shear'
!-------------------------------------------------------------------------------------------------- !--------------------------------------------------------------------------------------------------
@ -197,8 +196,8 @@ subroutine plastic_isotropic_init
outputID = undefined_ID outputID = undefined_ID
select case(outputs(i)) select case(outputs(i))
case ('flowstress') case ('xi')
outputID = flowstress_ID outputID = xi_ID
case ('strainrate') case ('strainrate')
outputID = strainrate_ID outputID = strainrate_ID
@ -215,7 +214,7 @@ subroutine plastic_isotropic_init
!-------------------------------------------------------------------------------------------------- !--------------------------------------------------------------------------------------------------
! allocate state arrays ! allocate state arrays
NipcMyPhase = count(material_phase == p) NipcMyPhase = count(material_phase == p)
sizeDotState = size(['flowstress ','accumulated_shear']) sizeDotState = size(['xi ','accumulated_shear'])
sizeState = sizeDotState sizeState = sizeDotState
call material_allocatePlasticState(p,NipcMyPhase,sizeState,sizeDotState,0, & call material_allocatePlasticState(p,NipcMyPhase,sizeState,sizeDotState,0, &
@ -224,10 +223,10 @@ subroutine plastic_isotropic_init
!-------------------------------------------------------------------------------------------------- !--------------------------------------------------------------------------------------------------
! locally defined state aliases and initialization of state0 and aTolState ! locally defined state aliases and initialization of state0 and aTolState
stt%flowstress => plasticState(p)%state (1,:) stt%xi => plasticState(p)%state (1,:)
stt%flowstress = prm%tau0 stt%xi = prm%xi_0
dot%flowstress => plasticState(p)%dotState(1,:) dot%xi => plasticState(p)%dotState(1,:)
plasticState(p)%aTolState(1) = prm%aTolFlowstress plasticState(p)%aTolState(1) = prm%aTol_xi
stt%accumulatedShear => plasticState(p)%state (2,:) stt%accumulatedShear => plasticState(p)%state (2,:)
dot%accumulatedShear => plasticState(p)%dotState(2,:) dot%accumulatedShear => plasticState(p)%dotState(2,:)
@ -288,9 +287,9 @@ subroutine plastic_isotropic_LpAndItsTangent(Lp,dLp_dMp,Mp,instance,of)
norm_Mp_dev = sqrt(squarenorm_Mp_dev) norm_Mp_dev = sqrt(squarenorm_Mp_dev)
if (norm_Mp_dev > 0.0_pReal) then if (norm_Mp_dev > 0.0_pReal) then
gamma_dot = prm%gdot0 * (sqrt(1.5_pReal) * norm_Mp_dev/(prm%fTaylor*stt%flowstress(of))) **prm%n gamma_dot = prm%gdot0 * (sqrt(1.5_pReal) * norm_Mp_dev/(prm%M*stt%xi(of))) **prm%n
Lp = Mp_dev/norm_Mp_dev * gamma_dot/prm%fTaylor Lp = Mp_dev/norm_Mp_dev * gamma_dot/prm%M
#ifdef DEBUG #ifdef DEBUG
if (iand(debug_level(debug_constitutive), debug_levelExtensive) /= 0 & if (iand(debug_level(debug_constitutive), debug_levelExtensive) /= 0 &
.and. (of == prm%of_debug .or. .not. iand(debug_level(debug_constitutive),debug_levelSelective) /= 0)) then .and. (of == prm%of_debug .or. .not. iand(debug_level(debug_constitutive),debug_levelSelective) /= 0)) then
@ -306,7 +305,7 @@ subroutine plastic_isotropic_LpAndItsTangent(Lp,dLp_dMp,Mp,instance,of)
dLp_dMp(k,l,k,l) = dLp_dMp(k,l,k,l) + 1.0_pReal dLp_dMp(k,l,k,l) = dLp_dMp(k,l,k,l) + 1.0_pReal
forall (k=1:3,m=1:3) & forall (k=1:3,m=1:3) &
dLp_dMp(k,k,m,m) = dLp_dMp(k,k,m,m) - 1.0_pReal/3.0_pReal dLp_dMp(k,k,m,m) = dLp_dMp(k,k,m,m) - 1.0_pReal/3.0_pReal
dLp_dMp = gamma_dot / prm%fTaylor * dLp_dMp / norm_Mp_dev dLp_dMp = gamma_dot / prm%M * dLp_dMp / norm_Mp_dev
else else
Lp = 0.0_pReal Lp = 0.0_pReal
dLp_dMp = 0.0_pReal dLp_dMp = 0.0_pReal
@ -354,15 +353,15 @@ subroutine plastic_isotropic_LiAndItsTangent(Li,dLi_dTstar,Tstar,instance,of)
norm_Tstar_sph = sqrt(squarenorm_Tstar_sph) norm_Tstar_sph = sqrt(squarenorm_Tstar_sph)
if (prm%dilatation .and. norm_Tstar_sph > 0.0_pReal) then ! no stress or J2 plastitiy --> Li and its derivative are zero if (prm%dilatation .and. norm_Tstar_sph > 0.0_pReal) then ! no stress or J2 plastitiy --> Li and its derivative are zero
gamma_dot = prm%gdot0 * (sqrt(1.5_pReal) * norm_Tstar_sph /(prm%fTaylor*stt%flowstress(of))) **prm%n gamma_dot = prm%gdot0 * (sqrt(1.5_pReal) * norm_Tstar_sph /(prm%M*stt%xi(of))) **prm%n
Li = Tstar_sph/norm_Tstar_sph * gamma_dot/prm%fTaylor Li = Tstar_sph/norm_Tstar_sph * gamma_dot/prm%M
forall (k=1:3,l=1:3,m=1:3,n=1:3) & forall (k=1:3,l=1:3,m=1:3,n=1:3) &
dLi_dTstar(k,l,m,n) = (prm%n-1.0_pReal) * Tstar_sph(k,l)*Tstar_sph(m,n) / squarenorm_Tstar_sph dLi_dTstar(k,l,m,n) = (prm%n-1.0_pReal) * Tstar_sph(k,l)*Tstar_sph(m,n) / squarenorm_Tstar_sph
forall (k=1:3,l=1:3) & forall (k=1:3,l=1:3) &
dLi_dTstar(k,l,k,l) = dLi_dTstar(k,l,k,l) + 1.0_pReal dLi_dTstar(k,l,k,l) = dLi_dTstar(k,l,k,l) + 1.0_pReal
dLi_dTstar = gamma_dot / prm%fTaylor * dLi_dTstar / norm_Tstar_sph dLi_dTstar = gamma_dot / prm%M * dLi_dTstar / norm_Tstar_sph
else else
Li = 0.0_pReal Li = 0.0_pReal
dLi_dTstar = 0.0_pReal dLi_dTstar = 0.0_pReal
@ -393,7 +392,7 @@ subroutine plastic_isotropic_dotState(Mp,instance,of)
real(pReal) :: & real(pReal) :: &
gamma_dot, & !< strainrate gamma_dot, & !< strainrate
hardening, & !< hardening coefficient hardening, & !< hardening coefficient
saturation, & !< saturation flowstress xi_inf_star, & !< saturation xi
norm_Mp !< norm of the (deviatoric) Mandel stress norm_Mp !< norm of the (deviatoric) Mandel stress
associate(prm => param(instance), stt => state(instance), dot => dotState(instance)) associate(prm => param(instance), stt => state(instance), dot => dotState(instance))
@ -404,25 +403,25 @@ subroutine plastic_isotropic_dotState(Mp,instance,of)
norm_Mp = sqrt(math_mul33xx33(math_deviatoric33(Mp),math_deviatoric33(Mp))) norm_Mp = sqrt(math_mul33xx33(math_deviatoric33(Mp),math_deviatoric33(Mp)))
endif endif
gamma_dot = prm%gdot0 * (sqrt(1.5_pReal) * norm_Mp /(prm%fTaylor*stt%flowstress(of))) **prm%n gamma_dot = prm%gdot0 * (sqrt(1.5_pReal) * norm_Mp /(prm%M*stt%xi(of))) **prm%n
if (abs(gamma_dot) > 1e-12_pReal) then if (abs(gamma_dot) > 1e-12_pReal) then
if (dEq0(prm%tausat_SinhFitA)) then if (dEq0(prm%c_1)) then
saturation = prm%tausat xi_inf_star = prm%xi_inf
else else
saturation = prm%tausat & xi_inf_star = prm%xi_inf &
+ asinh( (gamma_dot / prm%tausat_SinhFitA)**(1.0_pReal / prm%tausat_SinhFitD) & + asinh( (gamma_dot / prm%c_1)**(1.0_pReal / prm%c_2) &
)**(1.0_pReal / prm%tausat_SinhFitC) & )**(1.0_pReal / prm%c_3) &
/ prm%tausat_SinhFitB * (gamma_dot / prm%gdot0)**(1.0_pReal / prm%n) / prm%c_4 * (gamma_dot / prm%gdot0)**(1.0_pReal / prm%n)
endif endif
hardening = ( prm%h0 + prm%h0_slopeLnRate * log(gamma_dot) ) & hardening = ( prm%h0 + prm%h0_slopeLnRate * log(gamma_dot) ) &
* abs( 1.0_pReal - stt%flowstress(of)/saturation )**prm%a & * abs( 1.0_pReal - stt%xi(of)/xi_inf_star )**prm%a &
* sign(1.0_pReal, 1.0_pReal - stt%flowstress(of)/saturation) * sign(1.0_pReal, 1.0_pReal - stt%xi(of)/xi_inf_star)
else else
hardening = 0.0_pReal hardening = 0.0_pReal
endif endif
dot%flowstress (of) = hardening * gamma_dot dot%xi (of) = hardening * gamma_dot
dot%accumulatedShear(of) = gamma_dot dot%accumulatedShear(of) = gamma_dot
end associate end associate
@ -466,12 +465,12 @@ function plastic_isotropic_postResults(Mp,instance,of) result(postResults)
outputsLoop: do o = 1,size(prm%outputID) outputsLoop: do o = 1,size(prm%outputID)
select case(prm%outputID(o)) select case(prm%outputID(o))
case (flowstress_ID) case (xi_ID)
postResults(c+1) = stt%flowstress(of) postResults(c+1) = stt%xi(of)
c = c + 1 c = c + 1
case (strainrate_ID) case (strainrate_ID)
postResults(c+1) = prm%gdot0 & postResults(c+1) = prm%gdot0 &
* (sqrt(1.5_pReal) * norm_Mp /(prm%fTaylor * stt%flowstress(of)))**prm%n * (sqrt(1.5_pReal) * norm_Mp /(prm%M * stt%xi(of)))**prm%n
c = c + 1 c = c + 1
end select end select