New version of constitutive_dislotwin after first-round checks
This commit is contained in:
Luc Hantcherli
parent
2c1a610b14
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3bf3d7ddbd
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@ -642,7 +642,7 @@ constitutive_dislotwin_stateInit(4*ns+2*nt+1:5*ns+2*nt) = MeanFreePathSlip0
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forall (s = 1:ns) &
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tauSlipThreshold0(s) = &
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constitutive_dislotwin_Gmod(myInstance)*constitutive_dislotwin_burgersPerSlipSystem(s,myInstance)* &
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sqrt(dot_product(rhoEdge0,constitutive_dislotwin_interactionMatrixSlipSlip(1:ns,s,myInstance)))
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sqrt(dot_product((rhoEdge0+rhoEdgeDip0),constitutive_dislotwin_interactionMatrixSlipSlip(1:ns,s,myInstance)))
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constitutive_dislotwin_stateInit(5*ns+3*nt+1:6*ns+3*nt) = tauSlipThreshold0
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@ -762,7 +762,6 @@ myStructure = constitutive_dislotwin_structure(myInstance)
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ns = constitutive_dislotwin_totalNslip(myInstance)
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nt = constitutive_dislotwin_totalNtwin(myInstance)
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!* State: 1 : ns rho_edge
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!* State: ns+1 : 2*ns rho_dipole
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!* State: 2*ns+1 : 2*ns+nt f
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!* State: 2*ns+nt+1 : 3*ns+nt 1/lambda_slip
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@ -776,12 +775,9 @@ nt = constitutive_dislotwin_totalNtwin(myInstance)
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!* Total twin volume fraction
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sumf = sum(state(g,ip,el)%p((2*ns+1):(2*ns+nt))) ! safe for nt == 0
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!* Stacking fault energy
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sfe = 0.0002_pReal*Temperature-0.0396_pReal
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!* rescaled twin volume fraction for topology
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@ -834,7 +830,8 @@ forall (t = 1:nt) &
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forall (s = 1:ns) &
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state(g,ip,el)%p(5*ns+3*nt+s) = &
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constitutive_dislotwin_Gmod(myInstance)*constitutive_dislotwin_burgersPerSlipSystem(s,myInstance)*&
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sqrt(dot_product(state(g,ip,el)%p(1:ns),constitutive_dislotwin_interactionMatrixSlipSlip(1:ns,s,myInstance)))
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sqrt(dot_product((state(g,ip,el)%p(1:ns)+state(g,ip,el)%p(ns+1:2*ns)),&
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constitutive_dislotwin_interactionMatrixSlipSlip(1:ns,s,myInstance)))
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!* threshold stress for growing twin
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@ -1001,10 +998,13 @@ dLp_dTstar = math_Plain3333to99(dLp_dTstar3333)
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!if ((ip==1).and.(el==1)) then
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! write(6,*) '#MICROSTRUCTURE#'
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! write(6,*)
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! write(6,'(a,/,4(3(f10.4,x)/))') 'rhoEdge',state(g,ip,el)%p(1:12)
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! write(6,'(a,/,4(3(f10.4,x)/))') 'rhoEdgeDip',state(g,ip,el)%p(13:24)
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! write(6,*) '#LP/TANGENT#'
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! write(6,*)
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! write(6,*) 'Tstar_v', Tstar_v
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! write(6,*) 'tau_slip', tau_slip
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! write(6,'(a10,/,4(3(e20.8,x),/))') 'state',state(1,1,1)%p
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! write(6,'(a,/,3(3(f10.4,x)/))') 'Lp',Lp
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! write(6,'(a,/,9(9(f10.4,x)/))') 'dLp_dTstar',dLp_dTstar
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!endif
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@ -1094,9 +1094,8 @@ do f = 1,lattice_maxNslipFamily ! loop over all
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(constitutive_dislotwin_burgersPerSlipSystem(f,myInstance)*state(g,ip,el)%p(4*ns+2*nt+j))
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!* Dipole formation
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if (tau_slip(j) == 0.0_pReal) then
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DotRhoDipFormation(j) = 0.0_pReal
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DotRhoDipFormation(j) = 0.0_pReal
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else
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EdgeDipDistance(j) = &
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(3.0_pReal*constitutive_dislotwin_Gmod(myInstance)*constitutive_dislotwin_burgersPerSlipSystem(f,myInstance))/&
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@ -1121,14 +1120,17 @@ do f = 1,lattice_maxNslipFamily ! loop over all
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!* Dislocation dipole climb
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AtomicVolume = &
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constitutive_dislotwin_CAtomicVolume(myInstance)*constitutive_dislotwin_burgersPerSlipSystem(f,myInstance)**(3.0_pReal)
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VacancyDiffusion = &
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constitutive_dislotwin_D0(myInstance)*exp(-constitutive_dislotwin_Qsd(myInstance)/(kB*Temperature))
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ClimbVelocity(j) = &
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((3.0_pReal*constitutive_dislotwin_Gmod(myInstance)*VacancyDiffusion*AtomicVolume)/(2.0_pReal*pi*kB*Temperature))*&
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(1/(EdgeDipDistance(j)+EdgeDipMinDistance))
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DotRhoEdgeDipClimb(j) = &
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(4.0_pReal*ClimbVelocity(j)*state(g,ip,el)%p(ns+j))/(EdgeDipDistance(j)+EdgeDipMinDistance)
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if (tau_slip(j) == 0.0_pReal) then
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DotRhoEdgeDipClimb(j) = 0.0_pReal
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else
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ClimbVelocity(j) = &
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((3.0_pReal*constitutive_dislotwin_Gmod(myInstance)*VacancyDiffusion*AtomicVolume)/(2.0_pReal*pi*kB*Temperature))*&
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(1/(EdgeDipDistance(j)+EdgeDipMinDistance))
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DotRhoEdgeDipClimb(j) = &
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(4.0_pReal*ClimbVelocity(j)*state(g,ip,el)%p(ns+j))/(EdgeDipDistance(j)+EdgeDipMinDistance)
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endif
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!* Edge dislocation density rate of change
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constitutive_dislotwin_dotState(j) = &
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@ -1143,7 +1145,6 @@ do f = 1,lattice_maxNslipFamily ! loop over all
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enddo
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!* Twin volume fraction evolution
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gdot_twin = 0.0_pReal
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j = 0_pInt
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do f = 1,lattice_maxNtwinFamily ! loop over all twin families
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index_myFamily = sum(lattice_NtwinSystem(1:f-1,MyStructure)) ! at which index starts my family
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@ -1157,7 +1158,7 @@ do f = 1,lattice_maxNtwinFamily ! loop over all
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!* Shear rates and their derivatives due to twin
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if ( tau_twin(j) > 0.0_pReal ) then
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gdot_twin(j) = &
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constitutive_dislotwin_dotState(2*ns+j) = &
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(constitutive_dislotwin_MaxTwinFraction(myInstance)-sumf)*&
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state(g,ip,el)%p(6*ns+4*nt+j)*constitutive_dislotwin_Ndot0PerTwinSystem(f,myInstance)*exp(-StressRatio_r)
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endif
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@ -1165,22 +1166,17 @@ do f = 1,lattice_maxNtwinFamily ! loop over all
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enddo
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enddo
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!if ((ip==1).and.(el==1)) then
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! write(6,*) '#DOTSTATE#'
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! write(6,*)
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! write(6,'(a,/,4(3(f30.20,x)/))') 'tau slip',tau_slip
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! write(6,'(a,/,4(3(f30.20,x)/))') 'gamma slip',gdot_slip
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! write(6,'(a,/,4(3(f30.20,x)/))') 'RhoEdge',state(g,ip,el)%p(1:ns)
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! write(6,'(a,/,4(3(f30.20,x)/))') 'Threshold Slip', state(g,ip,el)%p(5*ns+3*nt+1:6*ns+3*nt)
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! write(6,'(a,/,4(3(f30.20,x)/))') 'Multiplication',DotRhoMultiplication
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! write(6,'(a,/,4(3(f30.20,x)/))') 'DipFormation',DotRhoDipFormation
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! write(6,'(a,/,4(3(f30.20,x)/))') 'SingleSingle',DotRhoEdgeEdgeAnnihilation
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! write(6,'(a,/,4(3(f30.20,x)/))') 'SingleDipole',DotRhoEdgeDipAnnihilation
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! write(6,'(a,/,4(3(f30.20,x)/))') 'DipClimb',DotRhoEdgeDipClimb
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!endif
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!write(6,*) '#DOTSTATE#'
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!write(6,*)
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!write(6,'(a,/,4(3(f30.20,x)/))') 'tau slip',tau_slip
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!write(6,'(a,/,4(3(f30.20,x)/))') 'gamma slip',gdot_slip
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!write(6,'(a,/,4(3(f30.20,x)/))') 'RhoEdge',state(g,ip,el)%p(1:ns)
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!write(6,'(a,/,4(3(f30.20,x)/))') 'Threshold Slip', state(g,ip,el)%p(5*ns+3*nt+1:6*ns+3*nt)
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!write(6,'(a,/,4(3(f30.20,x)/))') 'Multiplication',DotRhoMultiplication
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!write(6,'(a,/,4(3(f30.20,x)/))') 'DipFormation',DotRhoDipFormation
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!write(6,'(a,/,4(3(f30.20,x)/))') 'SingleSingle',DotRhoEdgeEdgeAnnihilation
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!write(6,'(a,/,4(3(f30.20,x)/))') 'SingleDipole',DotRhoEdgeDipAnnihilation
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!write(6,'(a,/,4(3(f30.20,x)/))') 'DipClimb',DotRhoEdgeDipClimb
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return
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end function
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@ -253,7 +253,7 @@ interactionSlipSlip 0.122 0.122 0.625 0.07 0.137 0.122 # Interaction coefficient
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Ntwin 12
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twinburgers 1.47e-10 # Burgers vector of twin system [m]
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twinsize 5.0e-8 # Twin stack mean thickness [m]
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fmax 1.0 # Maximum admissible twin volume fraction
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maxtwinfraction 1.0 # Maximum admissible twin volume fraction
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Ndot0 0.0 # Number of potential source per volume per time [1/m³.s]
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rexponent 10.0 # r-exponent in glide velocity
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Cmfptwin 1.0 # Adj. parameter controlling twin mean free path
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