!--------------------------------------------------------------------------------------------------
!> @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
!--------------------------------------------------------------------------------------------------
module source_damage_isoBrittle
use prec
implicit none
private
integer, dimension(:), allocatable, public, protected :: &
source_damage_isoBrittle_offset, & !< which source is my current damage mechanism?
source_damage_isoBrittle_instance !< instance of damage source mechanism
integer, dimension(:,:), allocatable, target, public :: &
source_damage_isoBrittle_sizePostResult !< size of each post result output
character(len=64), dimension(:,:), allocatable, target, public :: &
source_damage_isoBrittle_output !< name of each post result output
enum, bind(c)
enumerator :: undefined_ID, &
damage_drivingforce_ID
end enum !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11 ToDo
type, private :: tParameters !< container type for internal constitutive parameters
real(pReal) :: &
critStrainEnergy, &
N, &
aTol
integer(kind(undefined_ID)), allocatable, dimension(:) :: &
outputID
end type tParameters
type(tParameters), dimension(:), allocatable, private :: param !< containers of constitutive parameters (len Ninstance)
public :: &
source_damage_isoBrittle_init, &
source_damage_isoBrittle_deltaState, &
source_damage_isoBrittle_getRateAndItsTangent, &
source_damage_isoBrittle_postResults
contains
!--------------------------------------------------------------------------------------------------
!> @brief module initialization
!> @details reads in material parameters, allocates arrays, and does sanity checks
!--------------------------------------------------------------------------------------------------
subroutine source_damage_isoBrittle_init
use debug, only: &
debug_level,&
debug_constitutive,&
debug_levelBasic
use IO, only: &
IO_error
use material, only: &
material_allocateSourceState, &
phase_source, &
phase_Nsources, &
phase_Noutput, &
SOURCE_damage_isoBrittle_label, &
SOURCE_damage_isoBrittle_ID, &
material_phase, &
sourceState
use config, only: &
config_phase, &
material_Nphase
integer :: Ninstance,phase,instance,source,sourceOffset
integer :: NofMyPhase,p,i
character(len=65536), dimension(0), parameter :: emptyStringArray = [character(len=65536)::]
integer(kind(undefined_ID)) :: &
outputID
character(len=pStringLen) :: &
extmsg = ''
character(len=65536), dimension(:), allocatable :: &
outputs
write(6,'(/,a)') ' <<<+- source_'//SOURCE_DAMAGE_ISOBRITTLE_LABEL//' init -+>>>'
Ninstance = count(phase_source == SOURCE_damage_isoBrittle_ID)
if (Ninstance == 0) return
if (iand(debug_level(debug_constitutive),debug_levelBasic) /= 0) &
write(6,'(a16,1x,i5,/)') '# instances:',Ninstance
allocate(source_damage_isoBrittle_offset(material_Nphase), source=0)
allocate(source_damage_isoBrittle_instance(material_Nphase), source=0)
do phase = 1, material_Nphase
source_damage_isoBrittle_instance(phase) = count(phase_source(:,1:phase) == source_damage_isoBrittle_ID)
do source = 1, phase_Nsources(phase)
if (phase_source(source,phase) == source_damage_isoBrittle_ID) &
source_damage_isoBrittle_offset(phase) = source
enddo
enddo
allocate(source_damage_isoBrittle_sizePostResult(maxval(phase_Noutput),Ninstance),source=0)
allocate(source_damage_isoBrittle_output(maxval(phase_Noutput),Ninstance))
source_damage_isoBrittle_output = ''
allocate(param(Ninstance))
do p=1, size(config_phase)
if (all(phase_source(:,p) /= SOURCE_DAMAGE_ISOBRITTLE_ID)) cycle
associate(prm => param(source_damage_isoBrittle_instance(p)), &
config => config_phase(p))
prm%aTol = config%getFloat('isobrittle_atol',defaultVal = 1.0e-3_pReal)
prm%N = config%getFloat('isobrittle_n')
prm%critStrainEnergy = config%getFloat('isobrittle_criticalstrainenergy')
! sanity checks
if (prm%aTol < 0.0_pReal) extmsg = trim(extmsg)//' isobrittle_atol'
if (prm%N <= 0.0_pReal) extmsg = trim(extmsg)//' isobrittle_n'
if (prm%critStrainEnergy <= 0.0_pReal) extmsg = trim(extmsg)//' isobrittle_criticalstrainenergy'
!--------------------------------------------------------------------------------------------------
! exit if any parameter is out of range
if (extmsg /= '') &
call IO_error(211,ext_msg=trim(extmsg)//'('//SOURCE_DAMAGE_ISOBRITTLE_LABEL//')')
!--------------------------------------------------------------------------------------------------
! output pararameters
outputs = config%getStrings('(output)',defaultVal=emptyStringArray)
allocate(prm%outputID(0))
do i=1, size(outputs)
outputID = undefined_ID
select case(outputs(i))
case ('isobrittle_drivingforce')
source_damage_isoBrittle_sizePostResult(i,source_damage_isoBrittle_instance(p)) = 1
source_damage_isoBrittle_output(i,source_damage_isoBrittle_instance(p)) = outputs(i)
prm%outputID = [prm%outputID, damage_drivingforce_ID]
end select
enddo
end associate
phase = p
NofMyPhase=count(material_phase==phase)
instance = source_damage_isoBrittle_instance(phase)
sourceOffset = source_damage_isoBrittle_offset(phase)
call material_allocateSourceState(phase,sourceOffset,NofMyPhase,1,1,1)
sourceState(phase)%p(sourceOffset)%sizePostResults = sum(source_damage_isoBrittle_sizePostResult(:,instance))
sourceState(phase)%p(sourceOffset)%aTolState=param(instance)%aTol
enddo
end subroutine source_damage_isoBrittle_init
!--------------------------------------------------------------------------------------------------
!> @brief calculates derived quantities from state
!--------------------------------------------------------------------------------------------------
subroutine source_damage_isoBrittle_deltaState(C, Fe, ipc, ip, el)
use material, only: &
phaseAt, phasememberAt, &
sourceState
use math, only : &
math_sym33to6, &
math_I3
integer, intent(in) :: &
ipc, & !< component-ID of integration point
ip, & !< integration point
el !< element
real(pReal), intent(in), dimension(3,3) :: &
Fe
real(pReal), intent(in), dimension(6,6) :: &
C
integer :: &
phase, constituent, instance, sourceOffset
real(pReal) :: &
strain(6), &
strainenergy
phase = phaseAt(ipc,ip,el) !< phase ID at ipc,ip,el
constituent = phasememberAt(ipc,ip,el) !< state array offset for phase ID at ipc,ip,el
! ToDo: capability for multiple instances of SAME source within given phase. Needs Ninstance loop from here on!
instance = source_damage_isoBrittle_instance(phase) !< instance of damage_isoBrittle source
sourceOffset = source_damage_isoBrittle_offset(phase)
strain = 0.5_pReal*math_sym33to6(matmul(transpose(Fe),Fe)-math_I3)
strainenergy = 2.0_pReal*sum(strain*matmul(C,strain))/param(instance)%critStrainEnergy
! ToDo: check strainenergy = 2.0_pReal*dot_product(strain,matmul(C,strain))/param(instance)%critStrainEnergy
if (strainenergy > sourceState(phase)%p(sourceOffset)%subState0(1,constituent)) then
sourceState(phase)%p(sourceOffset)%deltaState(1,constituent) = &
strainenergy - sourceState(phase)%p(sourceOffset)%state(1,constituent)
else
sourceState(phase)%p(sourceOffset)%deltaState(1,constituent) = &
sourceState(phase)%p(sourceOffset)%subState0(1,constituent) - &
sourceState(phase)%p(sourceOffset)%state(1,constituent)
endif
end subroutine source_damage_isoBrittle_deltaState
!--------------------------------------------------------------------------------------------------
!> @brief returns local part of nonlocal damage driving force
!--------------------------------------------------------------------------------------------------
subroutine source_damage_isoBrittle_getRateAndItsTangent(localphiDot, dLocalphiDot_dPhi, phi, phase, constituent)
use material, only: &
sourceState
integer, intent(in) :: &
phase, &
constituent
real(pReal), intent(in) :: &
phi
real(pReal), intent(out) :: &
localphiDot, &
dLocalphiDot_dPhi
integer :: &
instance, sourceOffset
instance = source_damage_isoBrittle_instance(phase)
sourceOffset = source_damage_isoBrittle_offset(phase)
localphiDot = (1.0_pReal - phi)**(param(instance)%N - 1.0_pReal) - &
phi*sourceState(phase)%p(sourceOffset)%state(1,constituent)
dLocalphiDot_dPhi = - (param(instance)%N - 1.0_pReal)* &
(1.0_pReal - phi)**max(0.0_pReal,param(instance)%N - 2.0_pReal) &
- sourceState(phase)%p(sourceOffset)%state(1,constituent)
end subroutine source_damage_isoBrittle_getRateAndItsTangent
!--------------------------------------------------------------------------------------------------
!> @brief return array of local damage results
!--------------------------------------------------------------------------------------------------
function source_damage_isoBrittle_postResults(phase, constituent)
use material, only: &
sourceState
integer, intent(in) :: &
phase, &
constituent
real(pReal), dimension(sum(source_damage_isoBrittle_sizePostResult(:, &
source_damage_isoBrittle_instance(phase)))) :: &
source_damage_isoBrittle_postResults
integer :: &
instance, sourceOffset, o, c
instance = source_damage_isoBrittle_instance(phase)
sourceOffset = source_damage_isoBrittle_offset(phase)
c = 0
do o = 1,size(param(instance)%outputID)
select case(param(instance)%outputID(o))
case (damage_drivingforce_ID)
source_damage_isoBrittle_postResults(c+1) = sourceState(phase)%p(sourceOffset)%state(1,constituent)
c = c + 1
end select
enddo
end function source_damage_isoBrittle_postResults
end module source_damage_isoBrittle