!-------------------------------------------------------------------------------------------------- !> @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 use debug use IO use math use material use config implicit none private integer, dimension(:), allocatable, public, protected :: & source_damage_isoBrittle_offset, & source_damage_isoBrittle_instance integer, dimension(:,:), allocatable, target, public :: & source_damage_isoBrittle_sizePostResult character(len=64), dimension(:,:), allocatable, target, public :: & source_damage_isoBrittle_output enum, bind(c) enumerator :: & undefined_ID, & damage_drivingforce_ID end enum 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 :: 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 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_phaseMemberAt==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) 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 = material_phaseAt(ipc,el) !< phase ID at ipc,ip,el constituent = material_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) 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) 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