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New version of constitutive_dislotwin after first-round checks

This commit is contained in:
Luc Hantcherli 2009-10-13 15:05:21 +00:00
parent 2c1a610b14
commit 3bf3d7ddbd
2 changed files with 33 additions and 37 deletions
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68
code/constitutive_dislotwin.f90
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@ -642,7 +642,7 @@ constitutive_dislotwin_stateInit(4*ns+2*nt+1:5*ns+2*nt) = MeanFreePathSlip0
forall (s = 1:ns) & forall (s = 1:ns) &
tauSlipThreshold0(s) = & tauSlipThreshold0(s) = &
constitutive_dislotwin_Gmod(myInstance)*constitutive_dislotwin_burgersPerSlipSystem(s,myInstance)* & constitutive_dislotwin_Gmod(myInstance)*constitutive_dislotwin_burgersPerSlipSystem(s,myInstance)* &
sqrt(dot_product(rhoEdge0,constitutive_dislotwin_interactionMatrixSlipSlip(1:ns,s,myInstance))) sqrt(dot_product((rhoEdge0+rhoEdgeDip0),constitutive_dislotwin_interactionMatrixSlipSlip(1:ns,s,myInstance)))
constitutive_dislotwin_stateInit(5*ns+3*nt+1:6*ns+3*nt) = tauSlipThreshold0 constitutive_dislotwin_stateInit(5*ns+3*nt+1:6*ns+3*nt) = tauSlipThreshold0
@ -762,7 +762,6 @@ myStructure = constitutive_dislotwin_structure(myInstance)
ns = constitutive_dislotwin_totalNslip(myInstance) ns = constitutive_dislotwin_totalNslip(myInstance)
nt = constitutive_dislotwin_totalNtwin(myInstance) nt = constitutive_dislotwin_totalNtwin(myInstance)
!* State: 1 : ns rho_edge !* State: 1 : ns rho_edge
!* State: ns+1 : 2*ns rho_dipole !* State: ns+1 : 2*ns rho_dipole
!* State: 2*ns+1 : 2*ns+nt f !* State: 2*ns+1 : 2*ns+nt f
!* State: 2*ns+nt+1 : 3*ns+nt 1/lambda_slip !* State: 2*ns+nt+1 : 3*ns+nt 1/lambda_slip
@ -776,12 +775,9 @@ nt = constitutive_dislotwin_totalNtwin(myInstance)
!* Total twin volume fraction !* Total twin volume fraction
sumf = sum(state(g,ip,el)%p((2*ns+1):(2*ns+nt))) ! safe for nt == 0 sumf = sum(state(g,ip,el)%p((2*ns+1):(2*ns+nt))) ! safe for nt == 0
!* Stacking fault energy !* Stacking fault energy
sfe = 0.0002_pReal*Temperature-0.0396_pReal sfe = 0.0002_pReal*Temperature-0.0396_pReal
!* rescaled twin volume fraction for topology !* rescaled twin volume fraction for topology
@ -834,7 +830,8 @@ forall (t = 1:nt) &
forall (s = 1:ns) & forall (s = 1:ns) &
state(g,ip,el)%p(5*ns+3*nt+s) = & state(g,ip,el)%p(5*ns+3*nt+s) = &
constitutive_dislotwin_Gmod(myInstance)*constitutive_dislotwin_burgersPerSlipSystem(s,myInstance)*& constitutive_dislotwin_Gmod(myInstance)*constitutive_dislotwin_burgersPerSlipSystem(s,myInstance)*&
sqrt(dot_product(state(g,ip,el)%p(1:ns),constitutive_dislotwin_interactionMatrixSlipSlip(1:ns,s,myInstance))) sqrt(dot_product((state(g,ip,el)%p(1:ns)+state(g,ip,el)%p(ns+1:2*ns)),&
constitutive_dislotwin_interactionMatrixSlipSlip(1:ns,s,myInstance)))
!* threshold stress for growing twin !* threshold stress for growing twin
@ -1001,10 +998,13 @@ dLp_dTstar = math_Plain3333to99(dLp_dTstar3333)
!if ((ip==1).and.(el==1)) then !if ((ip==1).and.(el==1)) then
! write(6,*) '#MICROSTRUCTURE#' ! write(6,*) '#LP/TANGENT#'
! write(6,*) ! write(6,*)
! write(6,'(a,/,4(3(f10.4,x)/))') 'rhoEdge',state(g,ip,el)%p(1:12) ! write(6,*) 'Tstar_v', Tstar_v
! write(6,'(a,/,4(3(f10.4,x)/))') 'rhoEdgeDip',state(g,ip,el)%p(13:24) ! write(6,*) 'tau_slip', tau_slip
! write(6,'(a10,/,4(3(e20.8,x),/))') 'state',state(1,1,1)%p
! write(6,'(a,/,3(3(f10.4,x)/))') 'Lp',Lp
! write(6,'(a,/,9(9(f10.4,x)/))') 'dLp_dTstar',dLp_dTstar
!endif !endif
@ -1094,9 +1094,8 @@ do f = 1,lattice_maxNslipFamily ! loop over all
(constitutive_dislotwin_burgersPerSlipSystem(f,myInstance)*state(g,ip,el)%p(4*ns+2*nt+j)) (constitutive_dislotwin_burgersPerSlipSystem(f,myInstance)*state(g,ip,el)%p(4*ns+2*nt+j))
!* Dipole formation !* Dipole formation
if (tau_slip(j) == 0.0_pReal) then if (tau_slip(j) == 0.0_pReal) then
DotRhoDipFormation(j) = 0.0_pReal DotRhoDipFormation(j) = 0.0_pReal
else else
EdgeDipDistance(j) = & EdgeDipDistance(j) = &
(3.0_pReal*constitutive_dislotwin_Gmod(myInstance)*constitutive_dislotwin_burgersPerSlipSystem(f,myInstance))/& (3.0_pReal*constitutive_dislotwin_Gmod(myInstance)*constitutive_dislotwin_burgersPerSlipSystem(f,myInstance))/&
@ -1121,14 +1120,17 @@ do f = 1,lattice_maxNslipFamily ! loop over all
!* Dislocation dipole climb !* Dislocation dipole climb
AtomicVolume = & AtomicVolume = &
constitutive_dislotwin_CAtomicVolume(myInstance)*constitutive_dislotwin_burgersPerSlipSystem(f,myInstance)**(3.0_pReal) constitutive_dislotwin_CAtomicVolume(myInstance)*constitutive_dislotwin_burgersPerSlipSystem(f,myInstance)**(3.0_pReal)
VacancyDiffusion = & VacancyDiffusion = &
constitutive_dislotwin_D0(myInstance)*exp(-constitutive_dislotwin_Qsd(myInstance)/(kB*Temperature)) constitutive_dislotwin_D0(myInstance)*exp(-constitutive_dislotwin_Qsd(myInstance)/(kB*Temperature))
ClimbVelocity(j) = & if (tau_slip(j) == 0.0_pReal) then
((3.0_pReal*constitutive_dislotwin_Gmod(myInstance)*VacancyDiffusion*AtomicVolume)/(2.0_pReal*pi*kB*Temperature))*& DotRhoEdgeDipClimb(j) = 0.0_pReal
(1/(EdgeDipDistance(j)+EdgeDipMinDistance)) else
DotRhoEdgeDipClimb(j) = & ClimbVelocity(j) = &
(4.0_pReal*ClimbVelocity(j)*state(g,ip,el)%p(ns+j))/(EdgeDipDistance(j)+EdgeDipMinDistance) ((3.0_pReal*constitutive_dislotwin_Gmod(myInstance)*VacancyDiffusion*AtomicVolume)/(2.0_pReal*pi*kB*Temperature))*&
(1/(EdgeDipDistance(j)+EdgeDipMinDistance))
DotRhoEdgeDipClimb(j) = &
(4.0_pReal*ClimbVelocity(j)*state(g,ip,el)%p(ns+j))/(EdgeDipDistance(j)+EdgeDipMinDistance)
endif
!* Edge dislocation density rate of change !* Edge dislocation density rate of change
constitutive_dislotwin_dotState(j) = & constitutive_dislotwin_dotState(j) = &
@ -1143,7 +1145,6 @@ do f = 1,lattice_maxNslipFamily ! loop over all
enddo enddo
!* Twin volume fraction evolution !* Twin volume fraction evolution
gdot_twin = 0.0_pReal
j = 0_pInt j = 0_pInt
do f = 1,lattice_maxNtwinFamily ! loop over all twin families do f = 1,lattice_maxNtwinFamily ! loop over all twin families
index_myFamily = sum(lattice_NtwinSystem(1:f-1,MyStructure)) ! at which index starts my family index_myFamily = sum(lattice_NtwinSystem(1:f-1,MyStructure)) ! at which index starts my family
@ -1157,7 +1158,7 @@ do f = 1,lattice_maxNtwinFamily ! loop over all
!* Shear rates and their derivatives due to twin !* Shear rates and their derivatives due to twin
if ( tau_twin(j) > 0.0_pReal ) then if ( tau_twin(j) > 0.0_pReal ) then
gdot_twin(j) = & constitutive_dislotwin_dotState(2*ns+j) = &
(constitutive_dislotwin_MaxTwinFraction(myInstance)-sumf)*& (constitutive_dislotwin_MaxTwinFraction(myInstance)-sumf)*&
state(g,ip,el)%p(6*ns+4*nt+j)*constitutive_dislotwin_Ndot0PerTwinSystem(f,myInstance)*exp(-StressRatio_r) state(g,ip,el)%p(6*ns+4*nt+j)*constitutive_dislotwin_Ndot0PerTwinSystem(f,myInstance)*exp(-StressRatio_r)
endif endif
@ -1165,22 +1166,17 @@ do f = 1,lattice_maxNtwinFamily ! loop over all
enddo enddo
enddo enddo
!write(6,*) '#DOTSTATE#'
!if ((ip==1).and.(el==1)) then !write(6,*)
! write(6,*) '#DOTSTATE#' !write(6,'(a,/,4(3(f30.20,x)/))') 'tau slip',tau_slip
! write(6,*) !write(6,'(a,/,4(3(f30.20,x)/))') 'gamma slip',gdot_slip
! write(6,'(a,/,4(3(f30.20,x)/))') 'tau slip',tau_slip !write(6,'(a,/,4(3(f30.20,x)/))') 'RhoEdge',state(g,ip,el)%p(1:ns)
! write(6,'(a,/,4(3(f30.20,x)/))') 'gamma slip',gdot_slip !write(6,'(a,/,4(3(f30.20,x)/))') 'Threshold Slip', state(g,ip,el)%p(5*ns+3*nt+1:6*ns+3*nt)
! write(6,'(a,/,4(3(f30.20,x)/))') 'RhoEdge',state(g,ip,el)%p(1:ns) !write(6,'(a,/,4(3(f30.20,x)/))') 'Multiplication',DotRhoMultiplication
! write(6,'(a,/,4(3(f30.20,x)/))') 'Threshold Slip', state(g,ip,el)%p(5*ns+3*nt+1:6*ns+3*nt) !write(6,'(a,/,4(3(f30.20,x)/))') 'DipFormation',DotRhoDipFormation
! write(6,'(a,/,4(3(f30.20,x)/))') 'Multiplication',DotRhoMultiplication !write(6,'(a,/,4(3(f30.20,x)/))') 'SingleSingle',DotRhoEdgeEdgeAnnihilation
! write(6,'(a,/,4(3(f30.20,x)/))') 'DipFormation',DotRhoDipFormation !write(6,'(a,/,4(3(f30.20,x)/))') 'SingleDipole',DotRhoEdgeDipAnnihilation
! write(6,'(a,/,4(3(f30.20,x)/))') 'SingleSingle',DotRhoEdgeEdgeAnnihilation !write(6,'(a,/,4(3(f30.20,x)/))') 'DipClimb',DotRhoEdgeDipClimb
! write(6,'(a,/,4(3(f30.20,x)/))') 'SingleDipole',DotRhoEdgeDipAnnihilation
! write(6,'(a,/,4(3(f30.20,x)/))') 'DipClimb',DotRhoEdgeDipClimb
!endif
return return
end function end function

2
code/material.config
View File

@ -253,7 +253,7 @@ interactionSlipSlip 0.122 0.122 0.625 0.07 0.137 0.122 # Interaction coefficient
Ntwin 12 Ntwin 12
twinburgers 1.47e-10 # Burgers vector of twin system [m] twinburgers 1.47e-10 # Burgers vector of twin system [m]
twinsize 5.0e-8 # Twin stack mean thickness [m] twinsize 5.0e-8 # Twin stack mean thickness [m]
fmax 1.0 # Maximum admissible twin volume fraction maxtwinfraction 1.0 # Maximum admissible twin volume fraction
Ndot0 0.0 # Number of potential source per volume per time [1/m³.s] Ndot0 0.0 # Number of potential source per volume per time [1/m³.s]
rexponent 10.0 # r-exponent in glide velocity rexponent 10.0 # r-exponent in glide velocity
Cmfptwin 1.0 # Adj. parameter controlling twin mean free path Cmfptwin 1.0 # Adj. parameter controlling twin mean free path