DAMASK_EICMD/src/phase_damage_isobrittle.f90

140 lines
4.8 KiB
Fortran

!--------------------------------------------------------------------------------------------------
!> @author Pratheek Shanthraj, Max-Planck-Institut für Eisenforschung GmbH
!> @author Luv Sharma, Max-Planck-Institut für Eisenforschung GmbH
!> @brief material subroutine incoprorating isotropic brittle damage source mechanism
!> @details to be done
!--------------------------------------------------------------------------------------------------
submodule(phase:damage) isobrittle
type :: tParameters !< container type for internal constitutive parameters
real(pReal) :: &
W_crit !< critical elastic strain energy
character(len=pStringLen), allocatable, dimension(:) :: &
output
end type tParameters
type(tParameters), dimension(:), allocatable :: param !< containers of constitutive parameters (len Ninstances)
contains
!--------------------------------------------------------------------------------------------------
!> @brief module initialization
!> @details reads in material parameters, allocates arrays, and does sanity checks
!--------------------------------------------------------------------------------------------------
module function isobrittle_init() result(mySources)
logical, dimension(:), allocatable :: mySources
class(tNode), pointer :: &
phases, &
phase, &
sources, &
src
integer :: Nmembers,ph
character(len=pStringLen) :: extmsg = ''
mySources = source_active('isobrittle')
if(count(mySources) == 0) return
print'(/,a)', ' <<<+- phase:damage:isobrittle init -+>>>'
print'(a,i0)', ' # phases: ',count(mySources); flush(IO_STDOUT)
phases => config_material%get('phase')
allocate(param(phases%length))
do ph = 1, phases%length
if(mySources(ph)) then
phase => phases%get(ph)
sources => phase%get('damage')
associate(prm => param(ph))
src => sources%get(1)
prm%W_crit = src%get_asFloat('W_crit')
#if defined (__GFORTRAN__)
prm%output = output_as1dString(src)
#else
prm%output = src%get_as1dString('output',defaultVal=emptyStringArray)
#endif
! sanity checks
if (prm%W_crit <= 0.0_pReal) extmsg = trim(extmsg)//' W_crit'
Nmembers = count(material_phaseID==ph)
call phase_allocateState(damageState(ph),Nmembers,1,1,1)
damageState(ph)%atol = src%get_asFloat('atol_phi',defaultVal=1.0e-9_pReal)
if(any(damageState(ph)%atol < 0.0_pReal)) extmsg = trim(extmsg)//' atol_phi'
end associate
!--------------------------------------------------------------------------------------------------
! exit if any parameter is out of range
if (extmsg /= '') call IO_error(211,ext_msg=trim(extmsg)//'(damage_isobrittle)')
endif
enddo
end function isobrittle_init
!--------------------------------------------------------------------------------------------------
!> @brief calculates derived quantities from state
!--------------------------------------------------------------------------------------------------
module subroutine isobrittle_deltaState(C, Fe, ph,me)
integer, intent(in) :: ph,me
real(pReal), intent(in), dimension(3,3) :: &
Fe
real(pReal), intent(in), dimension(6,6) :: &
C
real(pReal), dimension(6) :: &
strain
real(pReal) :: &
strainenergy
strain = 0.5_pReal*math_sym33to6(matmul(transpose(Fe),Fe)-math_I3)
associate(prm => param(ph))
strainenergy = 2.0_pReal*sum(strain*matmul(C,strain))/prm%W_crit
! ToDo: check strainenergy = 2.0_pReal*dot_product(strain,matmul(C,strain))/prm%W_crit
damageState(ph)%deltaState(1,me) = merge(strainenergy - damageState(ph)%state(1,me), &
damageState(ph)%subState0(1,me) - damageState(ph)%state(1,me), &
strainenergy > damageState(ph)%subState0(1,me))
end associate
end subroutine isobrittle_deltaState
!--------------------------------------------------------------------------------------------------
!> @brief writes results to HDF5 output file
!--------------------------------------------------------------------------------------------------
module subroutine isobrittle_results(phase,group)
integer, intent(in) :: phase
character(len=*), intent(in) :: group
integer :: o
associate(prm => param(phase), &
stt => damageState(phase)%state)
outputsLoop: do o = 1,size(prm%output)
select case(trim(prm%output(o)))
case ('f_phi')
call results_writeDataset(stt,group,trim(prm%output(o)),'driving force','J/m³')
end select
enddo outputsLoop
end associate
end subroutine isobrittle_results
end submodule isobrittle