!-------------------------------------------------------------------------------------------------- !> @author Luv Sharma, Max-Planck-Institut für Eisenforschung GmbH !> @author Pratheek Shanthraj, Max-Planck-Institut für Eisenforschung GmbH !> @brief material subroutine incorporating anisotropic brittle damage source mechanism !> @details to be done !-------------------------------------------------------------------------------------------------- submodule (phase:damagee) anisobrittle integer, dimension(:), allocatable :: & source_damage_anisoBrittle_instance !< instance of source mechanism type :: tParameters !< container type for internal constitutive parameters real(pReal) :: & dot_o, & !< opening rate of cleavage planes q !< damage rate sensitivity real(pReal), dimension(:), allocatable :: & s_crit, & !< critical displacement g_crit !< critical load real(pReal), dimension(:,:,:,:), allocatable :: & cleavage_systems integer :: & sum_N_cl !< total number of cleavage planes 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 anisobrittle_init(source_length) result(mySources) integer, intent(in) :: source_length logical, dimension(:,:), allocatable :: mySources class(tNode), pointer :: & phases, & phase, & sources, & src integer :: Ninstances,sourceOffset,Nconstituents,p integer, dimension(:), allocatable :: N_cl character(len=pStringLen) :: extmsg = '' print'(/,a)', ' <<<+- phase:damage:anisobrittle init -+>>>' mySources = source_active('anisobrittle',source_length) Ninstances = count(mySources) print'(a,i2)', ' # instances: ',Ninstances; flush(IO_STDOUT) if(Ninstances == 0) return phases => config_material%get('phase') allocate(param(Ninstances)) allocate(source_damage_anisoBrittle_instance(phases%length), source=0) do p = 1, phases%length phase => phases%get(p) if(any(mySources(:,p))) source_damage_anisoBrittle_instance(p) = count(mySources(:,1:p)) if(count(mySources(:,p)) == 0) cycle sources => phase%get('damage') do sourceOffset = 1, sources%length if(mySources(sourceOffset,p)) then associate(prm => param(source_damage_anisoBrittle_instance(p))) src => sources%get(sourceOffset) N_cl = src%get_asInts('N_cl',defaultVal=emptyIntArray) prm%sum_N_cl = sum(abs(N_cl)) prm%q = src%get_asFloat('q') prm%dot_o = src%get_asFloat('dot_o') prm%s_crit = src%get_asFloats('s_crit', requiredSize=size(N_cl)) prm%g_crit = src%get_asFloats('g_crit', requiredSize=size(N_cl)) prm%cleavage_systems = lattice_SchmidMatrix_cleavage(N_cl,phase%get_asString('lattice'),& phase%get_asFloat('c/a',defaultVal=0.0_pReal)) ! expand: family => system prm%s_crit = math_expand(prm%s_crit,N_cl) prm%g_crit = math_expand(prm%g_crit,N_cl) #if defined (__GFORTRAN__) prm%output = output_asStrings(src) #else prm%output = src%get_asStrings('output',defaultVal=emptyStringArray) #endif ! sanity checks if (prm%q <= 0.0_pReal) extmsg = trim(extmsg)//' q' if (prm%dot_o <= 0.0_pReal) extmsg = trim(extmsg)//' dot_o' if (any(prm%g_crit < 0.0_pReal)) extmsg = trim(extmsg)//' g_crit' if (any(prm%s_crit < 0.0_pReal)) extmsg = trim(extmsg)//' s_crit' Nconstituents = count(material_phaseAt==p) * discretization_nIPs call phase_allocateState(damageState(p),Nconstituents,1,1,0) damageState(p)%atol = src%get_asFloat('anisobrittle_atol',defaultVal=1.0e-3_pReal) if(any(damageState(p)%atol < 0.0_pReal)) extmsg = trim(extmsg)//' anisobrittle_atol' end associate !-------------------------------------------------------------------------------------------------- ! exit if any parameter is out of range if (extmsg /= '') call IO_error(211,ext_msg=trim(extmsg)//'(damage_anisoBrittle)') endif enddo enddo end function anisobrittle_init !-------------------------------------------------------------------------------------------------- !> @brief calculates derived quantities from state !-------------------------------------------------------------------------------------------------- module subroutine anisobrittle_dotState(S, co, ip, el) integer, intent(in) :: & co, & !< component-ID of integration point ip, & !< integration point el !< element real(pReal), intent(in), dimension(3,3) :: & S integer :: & ph, & me, & sourceOffset, & damageOffset, & homog, & i real(pReal) :: & traction_d, traction_t, traction_n, traction_crit ph = material_phaseAt(co,el) me = material_phasememberAt(co,ip,el) associate(prm => param(source_damage_anisoBrittle_instance(ph))) damageState(ph)%dotState(1,me) = 0.0_pReal do i = 1, prm%sum_N_cl traction_d = math_tensordot(S,prm%cleavage_systems(1:3,1:3,1,i)) traction_t = math_tensordot(S,prm%cleavage_systems(1:3,1:3,2,i)) traction_n = math_tensordot(S,prm%cleavage_systems(1:3,1:3,3,i)) traction_crit = prm%g_crit(i)*phase_damage_get_phi(co,ip,el)**2.0_pReal damageState(ph)%dotState(1,me) & = damageState(ph)%dotState(1,me) & + prm%dot_o / prm%s_crit(i) & * ((max(0.0_pReal, abs(traction_d) - traction_crit)/traction_crit)**prm%q + & (max(0.0_pReal, abs(traction_t) - traction_crit)/traction_crit)**prm%q + & (max(0.0_pReal, abs(traction_n) - traction_crit)/traction_crit)**prm%q) enddo end associate end subroutine anisobrittle_dotState !-------------------------------------------------------------------------------------------------- !> @brief returns local part of nonlocal damage driving force !-------------------------------------------------------------------------------------------------- module subroutine source_damage_anisobrittle_getRateAndItsTangent(localphiDot, dLocalphiDot_dPhi, phi, phase, constituent) integer, intent(in) :: & phase, & constituent real(pReal), intent(in) :: & phi real(pReal), intent(out) :: & localphiDot, & dLocalphiDot_dPhi dLocalphiDot_dPhi = -damageState(phase)%state(1,constituent) localphiDot = 1.0_pReal & + dLocalphiDot_dPhi*phi end subroutine source_damage_anisoBrittle_getRateAndItsTangent !-------------------------------------------------------------------------------------------------- !> @brief writes results to HDF5 output file !-------------------------------------------------------------------------------------------------- module subroutine anisobrittle_results(phase,group) integer, intent(in) :: phase character(len=*), intent(in) :: group integer :: o associate(prm => param(source_damage_anisoBrittle_instance(phase)), & stt => damageState(phase)%state) outputsLoop: do o = 1,size(prm%output) select case(trim(prm%output(o))) case ('f_phi') call results_writeDataset(group,stt,trim(prm%output(o)),'driving force','J/m³') end select enddo outputsLoop end associate end subroutine anisobrittle_results end submodule anisobrittle