DAMASK_EICMD/trunk/constitutive_dislobased.f90

578 lines
28 KiB
Fortran

!************************************
!* Module: CONSTITUTIVE *
!************************************
!* contains: *
!* - constitutive equations *
!* - parameters definition *
!* - orientations *
!************************************
! [Alu]
! constitution dislobased
! (output) dislodensity
! (output) rateofshear
! lattice_structure 1
! Nslip 12
!
! c11 106.75e9
! c12 60.41e9
! c44 28.34e9
!
! burgers 2.86e-10 # Burgers vector [m]
! Qedge 3e-19 # Activation energy for dislocation glide [J/K] (0.5*G*b^3)
! Qsd 2.4e-19 # Activation energy for self diffusion [J/K] (gamma-iron)
! diff0 1e-3 # prefactor vacancy diffusion coeffficent (gamma-iron)
! interaction_coefficients 1.0 2.2 3.0 1.6 3.8 4.5 # Dislocation interaction coefficients
!
! rho0 6.0e12 # Initial dislocation density [m/m^3]
!
! c1 0.1 # Passing stress adjustment
! c2 2.0 # Jump width adjustment
! c3 1.0 # Activation volume adjustment
! c4 50.0 # Average slip distance adjustment for lock formation
! c7 8.0 # Athermal recovery adjustment
! c8 1.0e10 # Thermal recovery adjustment (plays no role for me)
MODULE constitutive_dislobased
!*** Include other modules ***
use prec, only: pReal,pInt
implicit none
character (len=*), parameter :: constitutive_dislobased_label = 'dislobased'
integer(pInt), dimension(:), allocatable :: constitutive_dislobased_sizeDotState, &
constitutive_dislobased_sizeState, &
constitutive_dislobased_sizePostResults
character(len=64), dimension(:,:), allocatable :: constitutive_dislobased_output
integer(pInt), dimension(:), allocatable :: constitutive_dislobased_structure
integer(pInt), dimension(:), allocatable :: constitutive_dislobased_Nslip
real(pReal), dimension(:), allocatable :: constitutive_dislobased_C11
real(pReal), dimension(:), allocatable :: constitutive_dislobased_C12
real(pReal), dimension(:), allocatable :: constitutive_dislobased_C13
real(pReal), dimension(:), allocatable :: constitutive_dislobased_C33
real(pReal), dimension(:), allocatable :: constitutive_dislobased_C44
real(pReal), dimension(:), allocatable :: constitutive_dislobased_Gmod
real(pReal), dimension(:,:,:), allocatable :: constitutive_dislobased_Cslip_66
!* Visco-plastic constitutive_phenomenological parameters
real(pReal), dimension(:), allocatable :: constitutive_dislobased_rho0
real(pReal), dimension(:), allocatable :: constitutive_dislobased_bg
real(pReal), dimension(:), allocatable :: constitutive_dislobased_Qedge
real(pReal), dimension(:), allocatable :: constitutive_dislobased_Qsd
real(pReal), dimension(:), allocatable :: constitutive_dislobased_D0
real(pReal), dimension(:), allocatable :: constitutive_dislobased_c1
real(pReal), dimension(:), allocatable :: constitutive_dislobased_c2
real(pReal), dimension(:), allocatable :: constitutive_dislobased_c3
real(pReal), dimension(:), allocatable :: constitutive_dislobased_c4
real(pReal), dimension(:), allocatable :: constitutive_dislobased_c5
real(pReal), dimension(:), allocatable :: constitutive_dislobased_c6
real(pReal), dimension(:), allocatable :: constitutive_dislobased_c7
real(pReal), dimension(:), allocatable :: constitutive_dislobased_c8
real(pReal), dimension(:,:), allocatable :: constitutive_dislobased_SlipIntCoeff
real(pReal), dimension(:,:,:), allocatable :: constitutive_dislobased_Iparallel
real(pReal), dimension(:,:,:), allocatable :: constitutive_dislobased_Iforest
!*************************************
!* Definition of material properties *
!*************************************
!* Physical parameter, attack_frequency != Debye frequency
real(pReal), parameter :: attack_frequency = 1.0e10_pReal
!* Physical parameter, Boltzmann constant in J/Kelvin
real(pReal), parameter :: kB = 1.38e-23_pReal
!* Physical parameter, Avogadro number in 1/mol
real(pReal), parameter :: avogadro = 6.022e23_pReal
!* Physical parameter, Gas constant in J.mol/Kelvin
real(pReal), parameter :: Rgaz = 8.314_pReal
CONTAINS
!****************************************
!* - constitutive_init
!* - constitutive_homogenizedC
!* - constitutive_microstructure
!* - constitutive_LpAndItsTangent
!* - consistutive_dotState
!* - consistutive_postResults
!****************************************
subroutine constitutive_dislobased_init(file)
!**************************************
!* Module initialization *
!**************************************
use prec, only: pInt, pReal
use math, only: math_Mandel3333to66, math_Voigt66to3333, math_mul3x3
use IO
use material
use lattice, only: lattice_sn, lattice_st, lattice_SlipIntType
integer(pInt), intent(in) :: file
integer(pInt), parameter :: maxNchunks = 7
integer(pInt), dimension(1+2*maxNchunks) :: positions
integer(pInt) section, maxNinstance, i,j,k,l, output
character(len=64) tag
character(len=1024) line
real(pReal) x,y
maxNinstance = count(phase_constitution == constitutive_dislobased_label)
if (maxNinstance == 0) return
allocate(constitutive_dislobased_sizeDotState(maxNinstance)) ; constitutive_dislobased_sizeDotState = 0_pInt
allocate(constitutive_dislobased_sizeState(maxNinstance)) ; constitutive_dislobased_sizeState = 0_pInt
allocate(constitutive_dislobased_sizePostResults(maxNinstance)); constitutive_dislobased_sizePostResults = 0_pInt
allocate(constitutive_dislobased_output(maxval(phase_Noutput), &
maxNinstance)) ; constitutive_dislobased_output = ''
allocate(constitutive_dislobased_structure(maxNinstance)) ; constitutive_dislobased_structure = 0_pInt
allocate(constitutive_dislobased_Nslip(maxNinstance)) ; constitutive_dislobased_Nslip = 0_pInt
allocate(constitutive_dislobased_C11(maxNinstance)) ; constitutive_dislobased_C11 = 0.0_pReal
allocate(constitutive_dislobased_C12(maxNinstance)) ; constitutive_dislobased_C12 = 0.0_pReal
allocate(constitutive_dislobased_C13(maxNinstance)) ; constitutive_dislobased_C13 = 0.0_pReal
allocate(constitutive_dislobased_C33(maxNinstance)) ; constitutive_dislobased_C33 = 0.0_pReal
allocate(constitutive_dislobased_C44(maxNinstance)) ; constitutive_dislobased_C44 = 0.0_pReal
allocate(constitutive_dislobased_Gmod(maxNinstance)) ; constitutive_dislobased_Gmod = 0.0_pReal
allocate(constitutive_dislobased_Cslip_66(6,6,maxNinstance)) ; constitutive_dislobased_Cslip_66 = 0.0_pReal
allocate(constitutive_dislobased_rho0(maxNinstance)) ; constitutive_dislobased_rho0 = 0.0_pReal
allocate(constitutive_dislobased_bg(maxNinstance)) ; constitutive_dislobased_bg = 0.0_pReal
allocate(constitutive_dislobased_Qedge(maxNinstance)) ; constitutive_dislobased_Qedge = 0.0_pReal
allocate(constitutive_dislobased_Qsd(maxNinstance)) ; constitutive_dislobased_Qsd = 0.0_pReal
allocate(constitutive_dislobased_D0(maxNinstance)) ; constitutive_dislobased_D0 = 0.0_pReal
allocate(constitutive_dislobased_c1(maxNinstance)) ; constitutive_dislobased_c1 = 0.0_pReal
allocate(constitutive_dislobased_c2(maxNinstance)) ; constitutive_dislobased_c2 = 0.0_pReal
allocate(constitutive_dislobased_c3(maxNinstance)) ; constitutive_dislobased_c3 = 0.0_pReal
allocate(constitutive_dislobased_c4(maxNinstance)) ; constitutive_dislobased_c4 = 0.0_pReal
allocate(constitutive_dislobased_c5(maxNinstance)) ; constitutive_dislobased_c5 = 0.0_pReal
allocate(constitutive_dislobased_c6(maxNinstance)) ; constitutive_dislobased_c6 = 0.0_pReal
allocate(constitutive_dislobased_c7(maxNinstance)) ; constitutive_dislobased_c7 = 0.0_pReal
allocate(constitutive_dislobased_c8(maxNinstance)) ; constitutive_dislobased_c8 = 0.0_pReal
allocate(constitutive_dislobased_SlipIntCoeff(6,maxNinstance)) ; constitutive_dislobased_SlipIntCoeff = 0.0_pReal
rewind(file)
line = ''
section = 0
do while (IO_lc(IO_getTag(line,'<','>')) /= 'phase') ! wind forward to <phase>
read(file,'(a1024)',END=100) line
enddo
do ! read thru sections of phase part
read(file,'(a1024)',END=100) line
if (IO_isBlank(line)) cycle ! skip empty lines
if (IO_getTag(line,'<','>') /= '') exit ! stop at next part
if (IO_getTag(line,'[',']') /= '') then ! next section
section = section + 1
output = 0 ! reset output counter
endif
if (section > 0 .and. phase_constitution(section) == constitutive_dislobased_label) then ! one of my sections
i = phase_constitutionInstance(section) ! which instance of my constitution is present phase
positions = IO_stringPos(line,maxNchunks)
tag = IO_lc(IO_stringValue(line,positions,1)) ! extract key
select case(tag)
case ('(output)')
output = output + 1
constitutive_dislobased_output(output,i) = IO_lc(IO_stringValue(line,positions,2))
case ('lattice_structure')
constitutive_dislobased_structure(i) = IO_intValue(line,positions,2)
case ('nslip')
constitutive_dislobased_Nslip(i) = IO_intValue(line,positions,2)
case ('c11')
constitutive_dislobased_C11(i) = IO_floatValue(line,positions,2)
case ('c12')
constitutive_dislobased_C12(i) = IO_floatValue(line,positions,2)
case ('c13')
constitutive_dislobased_C13(i) = IO_floatValue(line,positions,2)
case ('c33')
constitutive_dislobased_C33(i) = IO_floatValue(line,positions,2)
case ('c44')
constitutive_dislobased_C44(i) = IO_floatValue(line,positions,2)
case ('rho0')
constitutive_dislobased_rho0(i) = IO_floatValue(line,positions,2)
case ('burgers')
constitutive_dislobased_bg(i) = IO_floatValue(line,positions,2)
case ('qedge')
constitutive_dislobased_Qedge(i) = IO_floatValue(line,positions,2)
case ('qsd')
constitutive_dislobased_Qsd(i) = IO_floatValue(line,positions,2)
case ('diff0')
constitutive_dislobased_D0(i) = IO_floatValue(line,positions,2)
case ('c1')
constitutive_dislobased_c1(i) = IO_floatValue(line,positions,2)
case ('c2')
constitutive_dislobased_c2(i) = IO_floatValue(line,positions,2)
case ('c3')
constitutive_dislobased_c3(i) = IO_floatValue(line,positions,2)
case ('c4')
constitutive_dislobased_c4(i) = IO_floatValue(line,positions,2)
case ('c5')
constitutive_dislobased_c5(i) = IO_floatValue(line,positions,2)
case ('c6')
constitutive_dislobased_c6(i) = IO_floatValue(line,positions,2)
case ('c7')
constitutive_dislobased_c7(i) = IO_floatValue(line,positions,2)
case ('c8')
constitutive_dislobased_c8(i) = IO_floatValue(line,positions,2)
case ('interaction_coefficients')
forall (j=2:min(7,positions(1))) &
constitutive_dislobased_SlipIntCoeff(j-1,i) = IO_floatValue(line,positions,j)
end select
endif
enddo
100 do i = 1,maxNinstance ! sanity checks
if (constitutive_dislobased_structure(i) < 1 .or. &
constitutive_dislobased_structure(i) > 3) call IO_error(201)
if (constitutive_dislobased_Nslip(i) < 1) call IO_error(202)
if (constitutive_dislobased_rho0(i) < 0.0_pReal) call IO_error(220)
if (constitutive_dislobased_bg(i) <= 0.0_pReal) call IO_error(221)
if (constitutive_dislobased_Qedge(i) <= 0.0_pReal) call IO_error(222)
if (constitutive_dislobased_Qsd(i) <= 0.0_pReal) call IO_error(223)
if (constitutive_dislobased_D0(i) <= 0.0_pReal) call IO_error(224)
enddo
allocate(constitutive_dislobased_Iparallel(maxval(constitutive_dislobased_Nslip),&
maxval(constitutive_dislobased_Nslip),&
maxNinstance))
allocate(constitutive_dislobased_Iforest(maxval(constitutive_dislobased_Nslip),&
maxval(constitutive_dislobased_Nslip),&
maxNinstance))
do i = 1,maxNinstance
constitutive_dislobased_sizeDotState(i) = constitutive_dislobased_Nslip(i)
constitutive_dislobased_sizeState(i) = 8*constitutive_dislobased_Nslip(i)
do j = 1,maxval(phase_Noutput)
select case(constitutive_dislobased_output(j,i))
case('dislodensity')
constitutive_dislobased_sizePostResults(i) = &
constitutive_dislobased_sizePostResults(i) + constitutive_dislobased_Nslip(i)
case('rateofshear')
constitutive_dislobased_sizePostResults(i) = &
constitutive_dislobased_sizePostResults(i) + constitutive_dislobased_Nslip(i)
end select
enddo
constitutive_dislobased_Gmod(i) = constitutive_dislobased_C44(i)
select case (constitutive_dislobased_structure(i))
case(1:2) ! cubic(s)
forall(k=1:3)
forall(j=1:3) &
constitutive_dislobased_Cslip_66(k,j,i) = constitutive_dislobased_C12(i)
constitutive_dislobased_Cslip_66(k,k,i) = constitutive_dislobased_C11(i)
constitutive_dislobased_Cslip_66(k+3,k+3,i) = constitutive_dislobased_C44(i)
end forall
case(3) ! hcp
constitutive_dislobased_Cslip_66(1,1,i) = constitutive_dislobased_C11(i)
constitutive_dislobased_Cslip_66(2,2,i) = constitutive_dislobased_C11(i)
constitutive_dislobased_Cslip_66(3,3,i) = constitutive_dislobased_C33(i)
constitutive_dislobased_Cslip_66(1,2,i) = constitutive_dislobased_C12(i)
constitutive_dislobased_Cslip_66(2,1,i) = constitutive_dislobased_C12(i)
constitutive_dislobased_Cslip_66(1,3,i) = constitutive_dislobased_C13(i)
constitutive_dislobased_Cslip_66(3,1,i) = constitutive_dislobased_C13(i)
constitutive_dislobased_Cslip_66(2,3,i) = constitutive_dislobased_C13(i)
constitutive_dislobased_Cslip_66(3,2,i) = constitutive_dislobased_C13(i)
constitutive_dislobased_Cslip_66(4,4,i) = constitutive_dislobased_C44(i)
constitutive_dislobased_Cslip_66(5,5,i) = constitutive_dislobased_C44(i)
constitutive_dislobased_Cslip_66(6,6,i) = 0.5_pReal*(constitutive_dislobased_C11(i)- &
constitutive_dislobased_C12(i))
end select
constitutive_dislobased_Cslip_66(:,:,i) = &
math_Mandel3333to66(math_Voigt66to3333(constitutive_dislobased_Cslip_66(:,:,i)))
!* Construction of the hardening matrices
!* Iteration over the systems
do j = 1,constitutive_dislobased_Nslip(i)
do k = 1,constitutive_dislobased_Nslip(i)
!* Projection of the dislocation *
x = math_mul3x3(lattice_sn(:,j,i),lattice_st(:,k,i))
y = 1.0_pReal-x**(2.0_pReal)
!* Interaction matrix *
constitutive_dislobased_Iforest(j,k,i)=abs(x)*&
constitutive_dislobased_SlipIntCoeff(lattice_SlipIntType(j,k,constitutive_dislobased_structure(i)),i)
if (y>0.0_pReal) then
constitutive_dislobased_Iparallel(j,k,i)=sqrt(y)*&
constitutive_dislobased_SlipIntCoeff(lattice_SlipIntType(j,k,constitutive_dislobased_structure(i)),i)
else
constitutive_dislobased_Iparallel(j,k,i)=0.0_pReal
endif
enddo
enddo
enddo
return
end subroutine
function constitutive_dislobased_stateInit(ipc,ip,el)
!*********************************************************************
!* initial microstructural state *
!*********************************************************************
use prec, only: pReal,pInt
use material, only: material_phase, phase_constitutionInstance
implicit none
!* Definition of variables
integer(pInt), intent(in) :: ipc,ip,el
integer(pInt) matID
real(pReal), dimension(constitutive_dislobased_Nslip(phase_constitutionInstance(material_phase(ipc,ip,el)))) :: &
constitutive_dislobased_stateInit
matID = phase_constitutionInstance(material_phase(ipc,ip,el))
constitutive_dislobased_stateInit = constitutive_dislobased_rho0(matID)
return
end function
function constitutive_dislobased_homogenizedC(state,ipc,ip,el)
!*********************************************************************
!* homogenized elacticity matrix *
!* INPUT: *
!* - state : state variables *
!* - ipc : component-ID of current integration point *
!* - ip : current integration point *
!* - el : current element *
!*********************************************************************
use prec, only: pReal,pInt,p_vec
use mesh, only: mesh_NcpElems,mesh_maxNips
use material, only: homogenization_maxNgrains,material_phase, phase_constitutionInstance
implicit none
!* Definition of variables
integer(pInt), intent(in) :: ipc,ip,el
integer(pInt) matID
real(pReal), dimension(6,6) :: constitutive_dislobased_homogenizedC
type(p_vec), dimension(homogenization_maxNgrains,mesh_maxNips,mesh_NcpElems) :: state
matID = phase_constitutionInstance(material_phase(ipc,ip,el))
constitutive_dislobased_homogenizedC = constitutive_dislobased_Cslip_66(:,:,matID)
return
end function
subroutine constitutive_dislobased_microstructure(Temperature,state,ipc,ip,el)
!*********************************************************************
!* calculate derived quantities from state (not used here) *
!* INPUT: *
!* - Tp : temperature *
!* - ipc : component-ID of current integration point *
!* - ip : current integration point *
!* - el : current element *
!*********************************************************************
use prec, only: pReal,pInt,p_vec
use mesh, only: mesh_NcpElems,mesh_maxNips
use material, only: homogenization_maxNgrains,material_phase, phase_constitutionInstance
implicit none
!* Definition of variables
integer(pInt) ipc,ip,el,matID,n,i
real(pReal) Temperature
type(p_vec), dimension(homogenization_maxNgrains,mesh_maxNips,mesh_NcpElems) :: state
matID = phase_constitutionInstance(material_phase(ipc,ip,el))
n = constitutive_dislobased_Nslip(matID)
!* Quantities derived from state - slip
!* State: 1 : n rho
!* n+1 : 2n rho_f
!* 2n+1 : 3n rho_p
!* 3n+1 : 4n passing stress
!* 4n+1 : 5n jump width
!* 5n+1 : 6n activation volume
!* 6n+1 : 7n rho_m
!* 7n+1 : 8n g0_slip
!$OMP CRITICAL (evilmatmul)
state(ipc,ip,el)%p((n+1):(2*n)) = matmul(constitutive_dislobased_Iforest (1:n,1:n,matID),state(ipc,ip,el)%p(1:n))
state(ipc,ip,el)%p((2*n+1):(3*n)) = matmul(constitutive_dislobased_Iparallel(1:n,1:n,matID),state(ipc,ip,el)%p(1:n))
!$OMP END CRITICAL (evilmatmul)
do i=1,n
state(ipc,ip,el)%p(3*n+i) = &
constitutive_dislobased_c1(matID)*constitutive_dislobased_Gmod(matID)*&
constitutive_dislobased_bg(matID)*sqrt(state(ipc,ip,el)%p(2*n+i))
state(ipc,ip,el)%p(4*n+i) = &
constitutive_dislobased_c2(matID)/sqrt(state(ipc,ip,el)%p(n+i))
state(ipc,ip,el)%p(5*n+i) = &
constitutive_dislobased_c3(matID)*state(ipc,ip,el)%p(4*n+i)*constitutive_dislobased_bg(matID)**2.0_pReal
state(ipc,ip,el)%p(6*n+i) = &
(2.0_pReal*kB*Temperature*sqrt(state(ipc,ip,el)%p(2*n+i)))/&
(constitutive_dislobased_c1(matID)*constitutive_dislobased_c3(matID)*constitutive_dislobased_Gmod(matID)*&
state(ipc,ip,el)%p(4*n+i)*constitutive_dislobased_bg(matID)**3.0_pReal)
state(ipc,ip,el)%p(7*n+i) = &
state(ipc,ip,el)%p(6*n+i)*constitutive_dislobased_bg(matID)*attack_frequency*state(ipc,ip,el)%p(4*n+i)*&
exp(-constitutive_dislobased_Qedge(matID)/(kB*Temperature))
enddo
end subroutine
subroutine constitutive_dislobased_LpAndItsTangent(Lp,dLp_dTstar,Tstar_v,Temperature,state,ipc,ip,el)
!*********************************************************************
!* plastic velocity gradient and its tangent *
!* INPUT: *
!* - Tstar_v : 2nd Piola Kirchhoff stress tensor (Mandel) *
!* - ipc : component-ID at current integration point *
!* - ip : current integration point *
!* - el : current element *
!* OUTPUT: *
!* - Lp : plastic velocity gradient *
!* - dLp_dTstar : derivative of Lp (4th-rank tensor) *
!*********************************************************************
use prec, only: pReal,pInt,p_vec
use math, only: math_Plain3333to99, math_mul6x6
use lattice, only: lattice_Sslip,lattice_Sslip_v
use mesh, only: mesh_NcpElems,mesh_maxNips
use material, only: homogenization_maxNgrains,material_phase, phase_constitutionInstance
implicit none
!* Definition of variables
integer(pInt) ipc,ip,el
integer(pInt) matID,i,k,l,m,n
real(pReal) Temperature
type(p_vec), dimension(homogenization_maxNgrains,mesh_maxNips,mesh_NcpElems) :: state
real(pReal), dimension(6) :: Tstar_v
real(pReal), dimension(3,3) :: Lp
real(pReal), dimension(3,3,3,3) :: dLp_dTstar3333
real(pReal), dimension(9,9) :: dLp_dTstar
real(pReal), dimension(constitutive_dislobased_Nslip(phase_constitutionInstance(material_phase(ipc,ip,el)))) :: &
gdot_slip,dgdot_dtauslip,tau_slip
matID = phase_constitutionInstance(material_phase(ipc,ip,el))
n = constitutive_dislobased_Nslip(matID)
!* Calculation of Lp
Lp = 0.0_pReal
do i = 1,constitutive_dislobased_Nslip(matID)
tau_slip(i) = math_mul6x6(Tstar_v,lattice_Sslip_v(:,i,constitutive_dislobased_structure(matID)))
gdot_slip(i) = state(ipc,ip,el)%p(7*n+i)*sign(1.0_pReal,tau_slip(i))*&
sinh(((abs(tau_slip(i))-state(ipc,ip,el)%p(3*n+i))*state(ipc,ip,el)%p(5*n+i))/(kB*Temperature))
Lp = Lp + gdot_slip(i)*lattice_Sslip(:,:,i,constitutive_dislobased_structure(matID))
enddo
!* Calculation of the tangent of Lp
dLp_dTstar3333 = 0.0_pReal
dLp_dTstar = 0.0_pReal
do i = 1,constitutive_dislobased_Nslip(matID)
dgdot_dtauslip(i) = (state(ipc,ip,el)%p(7*n+i)*state(ipc,ip,el)%p(5*n+i))/(kB*Temperature)*&
cosh(((abs(tau_slip(i))-state(ipc,ip,el)%p(3*n+i))*state(ipc,ip,el)%p(5*n+i))/(kB*Temperature))
forall (k=1:3,l=1:3,m=1:3,n=1:3) &
dLp_dTstar3333(k,l,m,n) = dLp_dTstar3333(k,l,m,n) + &
dgdot_dtauslip(i)*lattice_Sslip(k,l,i,constitutive_dislobased_structure(matID))* &
lattice_Sslip(m,n,i,constitutive_dislobased_structure(matID))
enddo
dLp_dTstar = math_Plain3333to99(dLp_dTstar3333)
return
end subroutine
function constitutive_dislobased_dotState(Tstar_v,Temperature,state,ipc,ip,el)
!*********************************************************************
!* rate of change of microstructure *
!* INPUT: *
!* - Tstar_v : 2nd Piola Kirchhoff stress tensor (Mandel) *
!* - ipc : component-ID at current integration point *
!* - ip : current integration point *
!* - el : current element *
!* OUTPUT: *
!* - constitutive_dotState : evolution of state variable *
!*********************************************************************
use prec, only: pReal,pInt,p_vec
use lattice, only: lattice_Sslip_v
use mesh, only: mesh_NcpElems,mesh_maxNips
use material, only: homogenization_maxNgrains,material_phase, phase_constitutionInstance
implicit none
!* Definition of variables
integer(pInt) ipc,ip,el
integer(pInt) matID,i,n
real(pReal) Temperature,tau_slip,gdot_slip,locks,athermal_recovery,thermal_recovery
type(p_vec), dimension(homogenization_maxNgrains,mesh_maxNips,mesh_NcpElems) :: state
real(pReal), dimension(6) :: Tstar_v
real(pReal), dimension(constitutive_dislobased_Nslip(phase_constitutionInstance(material_phase(ipc,ip,el)))) :: &
constitutive_dislobased_dotState
matID = phase_constitutionInstance(material_phase(ipc,ip,el))
n = constitutive_dislobased_Nslip(matID)
!* Dislocation density evolution
constitutive_dislobased_dotState = 0.0_pReal
do i = 1,n
tau_slip = dot_product(Tstar_v,lattice_Sslip_v(:,i,constitutive_dislobased_structure(matID)))
if (abs(tau_slip) > state(ipc,ip,el)%p(3*n+i)) then
gdot_slip = state(ipc,ip,el)%p(7*n+i)*sign(1.0_pReal,tau_slip)*&
sinh(((abs(tau_slip)-state(ipc,ip,el)%p(3*n+i))*state(ipc,ip,el)%p(5*n+i))/(kB*Temperature))
locks = (sqrt(state(ipc,ip,el)%p(n+i))*abs(gdot_slip))/&
(constitutive_dislobased_c4(matID)*constitutive_dislobased_bg(matID))
athermal_recovery = constitutive_dislobased_c7(matID)*state(ipc,ip,el)%p(i)*abs(gdot_slip)
thermal_recovery = constitutive_dislobased_c8(matID)*abs(tau_slip)*state(ipc,ip,el)%p(i)**(2.0_pReal)*&
((constitutive_dislobased_D0(matID)*constitutive_dislobased_bg(matID)**(3.0_pReal))/&
(kB*Temperature))*exp(-constitutive_dislobased_Qsd(matID)/(kB*Temperature))
constitutive_dislobased_dotState(i) = locks - athermal_recovery !-thermal_recovery
endif
enddo
return
end function
pure function constitutive_dislobased_postResults(Tstar_v,Temperature,dt,state,ipc,ip,el)
!*********************************************************************
!* return array of constitutive results *
!* INPUT: *
!* - Tstar_v : 2nd Piola Kirchhoff stress tensor (Mandel) *
!* - dt : current time increment *
!* - ipc : component-ID at current integration point *
!* - ip : current integration point *
!* - el : current element *
!*********************************************************************
use prec, only: pReal,pInt,p_vec
use math, only: math_mul6x6
use lattice, only: lattice_Sslip_v
use mesh, only: mesh_NcpElems,mesh_maxNips
use material, only: homogenization_maxNgrains,material_phase,phase_constitutionInstance,phase_Noutput
implicit none
!* Definition of variables
integer(pInt), intent(in) :: ipc,ip,el
real(pReal), intent(in) :: dt,Temperature
real(pReal), dimension(6), intent(in) :: Tstar_v
type(p_vec), dimension(homogenization_maxNgrains,mesh_maxNips,mesh_NcpElems), intent(in) :: state
integer(pInt) matID,o,i,c,n
real(pReal) tau_slip, active_rate
real(pReal), dimension(constitutive_dislobased_sizePostResults(phase_constitutionInstance(material_phase(ipc,ip,el)))) :: &
constitutive_dislobased_postResults
matID = phase_constitutionInstance(material_phase(ipc,ip,el))
n = constitutive_dislobased_Nslip(matID)
c = 0_pInt
constitutive_dislobased_postResults = 0.0_pReal
do o = 1,phase_Noutput(material_phase(ipc,ip,el))
select case(constitutive_dislobased_output(o,matID))
case ('dislodensity')
constitutive_dislobased_postResults(c+1:c+n) = state(ipc,ip,el)%p(1:n)
c = c + n
case ('rateofshear')
do i = 1,n
tau_slip = math_mul6x6(Tstar_v,lattice_Sslip_v(:,i,constitutive_dislobased_structure(matID)))
constitutive_dislobased_postResults(c+i) = state(ipc,ip,el)%p(7*n+i)*sign(1.0_pReal,tau_slip)*&
sinh(((abs(tau_slip)-state(ipc,ip,el)%p(3*n+i))*state(ipc,ip,el)%p(5*n+i))/(kB*Temperature))
enddo
c = c + n
end select
enddo
return
end function
END MODULE