!-------------------------------------------------------------------------------------------------- ! $Id$ !-------------------------------------------------------------------------------------------------- !> @author Luv Sharma, Max-Planck-Institut für Eisenforschung GmbH !> @author Pratheek Shanthraj, Max-Planck-Institut für Eisenforschung GmbH !> @brief material subroutine incoprorating gurson damage !> @details to be done !-------------------------------------------------------------------------------------------------- module damage_gurson use prec, only: & pReal, & pInt implicit none private integer(pInt), dimension(:), allocatable, public, protected :: & damage_gurson_sizePostResults !< cumulative size of post results integer(pInt), dimension(:,:), allocatable, target, public :: & damage_gurson_sizePostResult !< size of each post result output character(len=64), dimension(:,:), allocatable, target, public :: & damage_gurson_output !< name of each post result output integer(pInt), dimension(:), allocatable, target, public :: & damage_gurson_Noutput !< number of outputs per instance of this damage real(pReal), dimension(:), allocatable, private :: & damage_gurson_aTol, & damage_gurson_coeff_torsion, & damage_gurson_coeff_ten_comp, & damage_gurson_coeff_triaxiality, & damage_gurson_fracture_tough, & damage_gurson_lengthscale, & damage_gurson_crit_void_fraction enum, bind(c) enumerator :: undefined_ID, & local_damage_ID end enum !!!!! ToDo integer(kind(undefined_ID)), dimension(:,:), allocatable, private :: & damage_gurson_outputID !< ID of each post result output public :: & damage_gurson_init, & damage_gurson_stateInit, & damage_gurson_aTolState, & damage_gurson_dotState, & damage_gurson_microstructure, & damage_gurson_getDamage, & damage_gurson_getSlipDamage, & damage_gurson_putLocalDamage, & damage_gurson_getLocalDamage, & damage_gurson_postResults contains !-------------------------------------------------------------------------------------------------- !> @brief module initialization !> @details reads in material parameters, allocates arrays, and does sanity checks !-------------------------------------------------------------------------------------------------- subroutine damage_gurson_init(fileUnit) use, intrinsic :: iso_fortran_env ! to get compiler_version and compiler_options (at least for gfortran 4.6 at the moment) use debug, only: & debug_level,& debug_constitutive,& debug_levelBasic use IO, only: & IO_read, & IO_lc, & IO_getTag, & IO_isBlank, & IO_stringPos, & IO_stringValue, & IO_floatValue, & IO_intValue, & IO_warning, & IO_error, & IO_timeStamp, & IO_EOF use material, only: & phase_damage, & phase_damageInstance, & phase_Noutput, & LOCAL_DAMAGE_gurson_label, & LOCAL_DAMAGE_gurson_ID, & material_phase, & damageState, & MATERIAL_partPhase use numerics,only: & worldrank, & numerics_integrator implicit none integer(pInt), intent(in) :: fileUnit integer(pInt), parameter :: MAXNCHUNKS = 7_pInt integer(pInt), dimension(1+2*MAXNCHUNKS) :: positions integer(pInt) :: maxNinstance,mySize=0_pInt,phase,instance,o integer(pInt) :: sizeState, sizeDotState integer(pInt) :: NofMyPhase character(len=65536) :: & tag = '', & line = '' mainProcess: if (worldrank == 0) then write(6,'(/,a)') ' <<<+- damage_'//LOCAL_DAMAGE_gurson_LABEL//' init -+>>>' write(6,'(a)') ' $Id$' write(6,'(a15,a)') ' Current time: ',IO_timeStamp() #include "compilation_info.f90" endif mainProcess maxNinstance = int(count(phase_damage == LOCAL_DAMAGE_gurson_ID),pInt) if (maxNinstance == 0_pInt) return if (iand(debug_level(debug_constitutive),debug_levelBasic) /= 0_pInt) & write(6,'(a16,1x,i5,/)') '# instances:',maxNinstance allocate(damage_gurson_sizePostResults(maxNinstance), source=0_pInt) allocate(damage_gurson_sizePostResult(maxval(phase_Noutput),maxNinstance),source=0_pInt) allocate(damage_gurson_output(maxval(phase_Noutput),maxNinstance)) damage_gurson_output = '' allocate(damage_gurson_outputID(maxval(phase_Noutput),maxNinstance), source=undefined_ID) allocate(damage_gurson_Noutput(maxNinstance), source=0_pInt) allocate(damage_gurson_coeff_torsion(maxNinstance), source=0.0_pReal) allocate(damage_gurson_coeff_ten_comp(maxNinstance), source=0.0_pReal) allocate(damage_gurson_coeff_triaxiality(maxNinstance), source=0.0_pReal) allocate(damage_gurson_fracture_tough(maxNinstance), source=0.0_pReal) allocate(damage_gurson_lengthscale(maxNinstance), source=0.0_pReal) allocate(damage_gurson_crit_void_fraction(maxNinstance), source=0.0_pReal) allocate(damage_gurson_aTol(maxNinstance), source=0.0_pReal) rewind(fileUnit) phase = 0_pInt do while (trim(line) /= IO_EOF .and. IO_lc(IO_getTag(line,'<','>')) /= MATERIAL_partPhase) ! wind forward to line = IO_read(fileUnit) enddo parsingFile: do while (trim(line) /= IO_EOF) ! read through sections of phase part line = IO_read(fileUnit) if (IO_isBlank(line)) cycle ! skip empty lines if (IO_getTag(line,'<','>') /= '') then ! stop at next part line = IO_read(fileUnit, .true.) ! reset IO_read exit endif if (IO_getTag(line,'[',']') /= '') then ! next phase section phase = phase + 1_pInt ! advance phase section counter cycle ! skip to next line endif if (phase > 0_pInt ) then; if (phase_damage(phase) == LOCAL_DAMAGE_gurson_ID) then ! do not short-circuit here (.and. with next if statemen). It's not safe in Fortran instance = phase_damageInstance(phase) ! which instance of my damage is present phase positions = IO_stringPos(line,MAXNCHUNKS) tag = IO_lc(IO_stringValue(line,positions,1_pInt)) ! extract key select case(tag) case ('(output)') select case(IO_lc(IO_stringValue(line,positions,2_pInt))) case ('local_damage') damage_gurson_Noutput(instance) = damage_gurson_Noutput(instance) + 1_pInt damage_gurson_outputID(damage_gurson_Noutput(instance),instance) = local_damage_ID damage_gurson_output(damage_gurson_Noutput(instance),instance) = & IO_lc(IO_stringValue(line,positions,2_pInt)) end select ! input parameters case ('coeff_torsion') damage_gurson_coeff_torsion(instance) = IO_floatValue(line,positions,2_pInt) !> coefficent of torsional stress component case ('coeff_tension_comp') damage_gurson_coeff_ten_comp(instance) = IO_floatValue(line,positions,2_pInt) !> coefficent of tensile or compressive stress component case ('coeff_triaxiality') damage_gurson_coeff_triaxiality(instance) = IO_floatValue(line,positions,2_pInt) case ('fracture_toughness') damage_gurson_fracture_tough(instance) = IO_floatValue(line,positions,2_pInt) case ('lengthscale') damage_gurson_lengthscale(instance) = IO_floatValue(line,positions,2_pInt) case ('critical_voidFraction') damage_gurson_crit_void_fraction(instance) = IO_floatValue(line,positions,2_pInt) case ('atol_damage') damage_gurson_aTol(instance) = IO_floatValue(line,positions,2_pInt) end select endif; endif enddo parsingFile initializeInstances: do phase = 1_pInt, size(phase_damage) if (phase_damage(phase) == LOCAL_DAMAGE_gurson_ID) then NofMyPhase=count(material_phase==phase) instance = phase_damageInstance(phase) !-------------------------------------------------------------------------------------------------- ! Determine size of postResults array outputsLoop: do o = 1_pInt,damage_gurson_Noutput(instance) select case(damage_gurson_outputID(o,instance)) case(local_damage_ID) mySize = 1_pInt end select if (mySize > 0_pInt) then ! any meaningful output found damage_gurson_sizePostResult(o,instance) = mySize damage_gurson_sizePostResults(instance) = damage_gurson_sizePostResults(instance) + mySize endif enddo outputsLoop ! Determine size of state array sizeDotState = 3_pInt sizeState = 4_pInt damageState(phase)%sizeState = sizeState damageState(phase)%sizeDotState = sizeDotState damageState(phase)%sizePostResults = damage_gurson_sizePostResults(instance) allocate(damageState(phase)%aTolState (sizeState), source=0.0_pReal) allocate(damageState(phase)%state0 (sizeState,NofMyPhase), source=0.0_pReal) allocate(damageState(phase)%partionedState0 (sizeState,NofMyPhase), source=0.0_pReal) allocate(damageState(phase)%subState0 (sizeState,NofMyPhase), source=0.0_pReal) allocate(damageState(phase)%state (sizeState,NofMyPhase), source=0.0_pReal) allocate(damageState(phase)%state_backup (sizeState,NofMyPhase), source=0.0_pReal) allocate(damageState(phase)%dotState (sizeDotState,NofMyPhase), source=0.0_pReal) allocate(damageState(phase)%deltaState (sizeDotState,NofMyPhase), source=0.0_pReal) allocate(damageState(phase)%dotState_backup (sizeDotState,NofMyPhase), source=0.0_pReal) if (any(numerics_integrator == 1_pInt)) then allocate(damageState(phase)%previousDotState (sizeDotState,NofMyPhase), source=0.0_pReal) allocate(damageState(phase)%previousDotState2 (sizeDotState,NofMyPhase), source=0.0_pReal) endif if (any(numerics_integrator == 4_pInt)) & allocate(damageState(phase)%RK4dotState (sizeDotState,NofMyPhase), source=0.0_pReal) if (any(numerics_integrator == 5_pInt)) & allocate(damageState(phase)%RKCK45dotState (6,sizeDotState,NofMyPhase),source=0.0_pReal) call damage_gurson_stateInit(phase) call damage_gurson_aTolState(phase,instance) endif enddo initializeInstances end subroutine damage_gurson_init !-------------------------------------------------------------------------------------------------- !> @brief sets the relevant NEW state values for a given instance of this damage !-------------------------------------------------------------------------------------------------- subroutine damage_gurson_stateInit(phase) use material, only: & damageState implicit none integer(pInt), intent(in) :: phase !< number specifying the phase of the damage real(pReal), dimension(damageState(phase)%sizeState) :: tempState tempState(1) = 1.0_pReal tempState(2) = 1.0_pReal tempState(3) = 1.0_pReal tempState(4) = 1.0_pReal damageState(phase)%state = spread(tempState,2,size(damageState(phase)%state(1,:))) damageState(phase)%state0 = damageState(phase)%state damageState(phase)%partionedState0 = damageState(phase)%state end subroutine damage_gurson_stateInit !-------------------------------------------------------------------------------------------------- !> @brief sets the relevant state values for a given instance of this damage !-------------------------------------------------------------------------------------------------- subroutine damage_gurson_aTolState(phase,instance) use material, only: & damageState implicit none integer(pInt), intent(in) :: & phase, & instance ! number specifying the current instance of the damage real(pReal), dimension(damageState(phase)%sizeState) :: tempTol tempTol = damage_gurson_aTol(instance) damageState(phase)%aTolState = tempTol end subroutine damage_gurson_aTolState !-------------------------------------------------------------------------------------------------- !> @brief calculates derived quantities from state !-------------------------------------------------------------------------------------------------- subroutine damage_gurson_dotState(Tstar_v, Lp, ipc, ip, el) use material, only: & mappingConstitutive, & damageState use math, only: & math_equivStrain33, & math_norm33, & math_j3_33, & math_trace33, & math_I3, & math_Mandel6to33 use lattice, only: & lattice_DamageMobility implicit none real(pReal), intent(in), dimension(6) :: & Tstar_v !< 2nd Piola Kirchhoff stress tensor (Mandel) real(pReal), intent(in), dimension(3,3) :: & Lp integer(pInt), intent(in) :: & ipc, & !< component-ID of integration point ip, & !< integration point el !< element integer(pInt) :: & phase, constituent real(pReal) :: & i1, j2, j3 real(pReal) , dimension(3,3) :: & Tstar_dev phase = mappingConstitutive(2,ipc,ip,el) constituent = mappingConstitutive(1,ipc,ip,el) Tstar_dev = math_Mandel6to33(Tstar_v) - math_trace33(math_Mandel6to33(Tstar_v))/3.0_pReal*math_I3 i1 = sum(Tstar_v(1:3)) j2 = 0.5_pReal*(math_norm33(Tstar_dev))**2.0_pReal j3 = math_j3_33(math_Mandel6to33(Tstar_v)) damageState(phase)%dotState(1,constituent) = & (1.0_pReal/lattice_DamageMobility(phase))* & (damageState(phase)%state(4,constituent) - & damageState(phase)%state(1,constituent)) damageState(phase)%dotState(2,constituent) = & !> void nucleation rate math_norm33(Lp)*sqrt(damage_gurson_lengthscale(phase))/damage_gurson_fracture_tough(phase)* & damageState(phase)%state(2,constituent) * ( & damage_gurson_coeff_torsion(phase) * ((4_pReal/27_pReal) - (j3**(2)/j2**(3))) + & damage_gurson_coeff_ten_comp(phase) * (j3/j2**(1.5_pReal)) + & damage_gurson_coeff_triaxiality(phase) * abs(i1/sqrt(j2))) !> to be coupled with vacancy generation damageState(phase)%dotState(3,constituent) = & ( damageState(phase)%state(4,constituent)) * math_trace33(Lp) !> void growth rate end subroutine damage_gurson_dotState !-------------------------------------------------------------------------------------------------- !> @brief calculates derived quantities from state !-------------------------------------------------------------------------------------------------- subroutine damage_gurson_microstructure(ipc, ip, el) use material, only: & mappingConstitutive, & damageState use math, only: & math_Mandel6to33, & math_mul33x33, & math_norm33 implicit none integer(pInt), intent(in) :: & ipc, & !< component-ID of integration point ip, & !< integration point el !< element integer(pReal) :: & voidFraction integer(pInt) :: & phase, constituent phase = mappingConstitutive(2,ipc,ip,el) constituent = mappingConstitutive(1,ipc,ip,el) voidFraction = damageState(phase)%state(2,constituent) + damageState(phase)%state(3,constituent) if(voidFraction < damage_gurson_crit_void_fraction(phase)) then damageState(phase)%state(4,constituent) = 1.0_pReal - voidFraction ! damage parameter is 1 when no void present else damageState(phase)%state(4,constituent) = 1.0_pReal - damage_gurson_crit_void_fraction(phase) + & 5.0_pReal * (voidFraction - damage_gurson_crit_void_fraction(phase)) ! this accelerated void increase models the effect of void coalescence endif end subroutine damage_gurson_microstructure !-------------------------------------------------------------------------------------------------- !> @brief returns damage !-------------------------------------------------------------------------------------------------- function damage_gurson_getDamage(ipc, ip, el) use material, only: & material_homog, & mappingHomogenization, & fieldDamage, & field_damage_type, & FIELD_DAMAGE_LOCAL_ID, & FIELD_DAMAGE_NONLOCAL_ID implicit none integer(pInt), intent(in) :: & ipc, & !< grain number ip, & !< integration point number el !< element number real(pReal) :: damage_gurson_getDamage select case(field_damage_type(material_homog(ip,el))) case (FIELD_DAMAGE_LOCAL_ID) damage_gurson_getDamage = damage_gurson_getLocalDamage(ipc, ip, el) case (FIELD_DAMAGE_NONLOCAL_ID) damage_gurson_getDamage = fieldDamage(material_homog(ip,el))% & field(1,mappingHomogenization(1,ip,el)) ! Taylor type end select end function damage_gurson_getDamage !-------------------------------------------------------------------------------------------------- !> @brief returns slip damage !-------------------------------------------------------------------------------------------------- function damage_gurson_getSlipDamage(Tstar_v, ipc, ip, el) implicit none integer(pInt), intent(in) :: & ipc, & !< grain number ip, & !< integration point number el !< element number real(pReal), dimension(6), intent(in) :: & Tstar_v !< 2nd Piola Kirchhoff stress tensor in Mandel notation real(pReal) :: damage_gurson_getSlipDamage, porosity porosity = damage_gurson_getDamage(ipc, ip, el) damage_gurson_getSlipDamage = porosity*porosity ! Gurson yield function should go here end function damage_gurson_getSlipDamage !-------------------------------------------------------------------------------------------------- !> @brief puts local damage !-------------------------------------------------------------------------------------------------- subroutine damage_gurson_putLocalDamage(ipc, ip, el, localDamage) use material, only: & mappingConstitutive, & damageState implicit none integer(pInt), intent(in) :: & ipc, & !< grain number ip, & !< integration point number el !< element number real(pReal), intent(in) :: localDamage damageState(mappingConstitutive(2,ipc,ip,el))%state(1,mappingConstitutive(1,ipc,ip,el)) = & localDamage end subroutine damage_gurson_putLocalDamage !-------------------------------------------------------------------------------------------------- !> @brief returns local damage !-------------------------------------------------------------------------------------------------- function damage_gurson_getLocalDamage(ipc, ip, el) use material, only: & mappingConstitutive, & damageState implicit none integer(pInt), intent(in) :: & ipc, & !< grain number ip, & !< integration point number el !< element number real(pReal) :: damage_gurson_getLocalDamage damage_gurson_getLocalDamage = & damageState(mappingConstitutive(2,ipc,ip,el))%state(1,mappingConstitutive(1,ipc,ip,el)) end function damage_gurson_getLocalDamage !-------------------------------------------------------------------------------------------------- !> @brief return array of constitutive results !-------------------------------------------------------------------------------------------------- function damage_gurson_postResults(ipc,ip,el) use material, only: & mappingConstitutive, & phase_damageInstance,& damageState implicit none integer(pInt), intent(in) :: & ipc, & !< component-ID of integration point ip, & !< integration point el !< element real(pReal), dimension(damage_gurson_sizePostResults(phase_damageInstance(mappingConstitutive(2,ipc,ip,el)))) :: & damage_gurson_postResults integer(pInt) :: & instance, phase, constituent, o, c phase = mappingConstitutive(2,ipc,ip,el) constituent = mappingConstitutive(1,ipc,ip,el) instance = phase_damageInstance(phase) c = 0_pInt damage_gurson_postResults = 0.0_pReal do o = 1_pInt,damage_gurson_Noutput(instance) select case(damage_gurson_outputID(o,instance)) case (local_damage_ID) damage_gurson_postResults(c+1_pInt) = damageState(phase)%state(1,constituent) c = c + 1 end select enddo end function damage_gurson_postResults end module damage_gurson