191 lines
7.7 KiB
Fortran
191 lines
7.7 KiB
Fortran
!--------------------------------------------------------------------------------------------------
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!> @author Pratheek Shanthraj, Max-Planck-Institut für Eisenforschung GmbH
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!> @author Luv Sharma, Max-Planck-Institut für Eisenforschung GmbH
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!> @brief material subroutine incoprorating isotropic brittle damage source mechanism
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!> @details to be done
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!--------------------------------------------------------------------------------------------------
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submodule(constitutive:constitutive_damage) source_damage_isoBrittle
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integer, dimension(:), allocatable :: &
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source_damage_isoBrittle_offset, &
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source_damage_isoBrittle_instance
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type :: tParameters !< container type for internal constitutive parameters
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real(pReal) :: &
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W_crit !< critical elastic strain energy
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character(len=pStringLen), allocatable, dimension(:) :: &
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output
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end type tParameters
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type(tParameters), dimension(:), allocatable :: param !< containers of constitutive parameters (len Ninstances)
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contains
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!--------------------------------------------------------------------------------------------------
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!> @brief module initialization
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!> @details reads in material parameters, allocates arrays, and does sanity checks
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!--------------------------------------------------------------------------------------------------
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module function source_damage_isoBrittle_init(source_length) result(mySources)
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integer, intent(in) :: source_length
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logical, dimension(:,:), allocatable :: mySources
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class(tNode), pointer :: &
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phases, &
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phase, &
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sources, &
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src
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integer :: Ninstances,sourceOffset,Nconstituents,p
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character(len=pStringLen) :: extmsg = ''
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print'(/,a)', ' <<<+- source_damage_isoBrittle init -+>>>'
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mySources = source_active('damage_isoBrittle',source_length)
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Ninstances = count(mySources)
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print'(a,i2)', ' # instances: ',Ninstances; flush(IO_STDOUT)
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if(Ninstances == 0) return
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phases => config_material%get('phase')
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allocate(param(Ninstances))
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allocate(source_damage_isoBrittle_offset (phases%length), source=0)
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allocate(source_damage_isoBrittle_instance(phases%length), source=0)
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do p = 1, phases%length
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phase => phases%get(p)
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if(any(mySources(:,p))) source_damage_isoBrittle_instance(p) = count(mySources(:,1:p))
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if(count(mySources(:,p)) == 0) cycle
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sources => phase%get('source')
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do sourceOffset = 1, sources%length
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if(mySources(sourceOffset,p)) then
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source_damage_isoBrittle_offset(p) = sourceOffset
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associate(prm => param(source_damage_isoBrittle_instance(p)))
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src => sources%get(sourceOffset)
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prm%W_crit = src%get_asFloat('W_crit')
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#if defined (__GFORTRAN__)
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prm%output = output_asStrings(src)
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#else
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prm%output = src%get_asStrings('output',defaultVal=emptyStringArray)
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#endif
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! sanity checks
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if (prm%W_crit <= 0.0_pReal) extmsg = trim(extmsg)//' W_crit'
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Nconstituents = count(material_phaseAt==p) * discretization_nIPs
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call constitutive_allocateState(sourceState(p)%p(sourceOffset),Nconstituents,1,1,1)
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sourceState(p)%p(sourceOffset)%atol = src%get_asFloat('isoBrittle_atol',defaultVal=1.0e-3_pReal)
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if(any(sourceState(p)%p(sourceOffset)%atol < 0.0_pReal)) extmsg = trim(extmsg)//' isobrittle_atol'
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end associate
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!--------------------------------------------------------------------------------------------------
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! exit if any parameter is out of range
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if (extmsg /= '') call IO_error(211,ext_msg=trim(extmsg)//'(damage_isoBrittle)')
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endif
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enddo
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enddo
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end function source_damage_isoBrittle_init
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!--------------------------------------------------------------------------------------------------
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!> @brief calculates derived quantities from state
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!--------------------------------------------------------------------------------------------------
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module subroutine source_damage_isoBrittle_deltaState(C, Fe, co, ip, el)
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integer, intent(in) :: &
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co, & !< component-ID of integration point
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ip, & !< integration point
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el !< element
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real(pReal), intent(in), dimension(3,3) :: &
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Fe
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real(pReal), intent(in), dimension(6,6) :: &
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C
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integer :: &
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phase, &
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constituent, &
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sourceOffset
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real(pReal), dimension(6) :: &
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strain
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real(pReal) :: &
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strainenergy
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phase = material_phaseAt(co,el) !< phase ID at co,ip,el
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constituent = material_phasememberAt(co,ip,el) !< state array offset for phase ID at co,ip,el
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sourceOffset = source_damage_isoBrittle_offset(phase)
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strain = 0.5_pReal*math_sym33to6(matmul(transpose(Fe),Fe)-math_I3)
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associate(prm => param(source_damage_isoBrittle_instance(phase)))
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strainenergy = 2.0_pReal*sum(strain*matmul(C,strain))/prm%W_crit
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! ToDo: check strainenergy = 2.0_pReal*dot_product(strain,matmul(C,strain))/prm%W_crit
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if (strainenergy > sourceState(phase)%p(sourceOffset)%subState0(1,constituent)) then
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sourceState(phase)%p(sourceOffset)%deltaState(1,constituent) = &
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strainenergy - sourceState(phase)%p(sourceOffset)%state(1,constituent)
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else
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sourceState(phase)%p(sourceOffset)%deltaState(1,constituent) = &
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sourceState(phase)%p(sourceOffset)%subState0(1,constituent) - &
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sourceState(phase)%p(sourceOffset)%state(1,constituent)
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endif
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end associate
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end subroutine source_damage_isoBrittle_deltaState
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!--------------------------------------------------------------------------------------------------
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!> @brief returns local part of nonlocal damage driving force
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!--------------------------------------------------------------------------------------------------
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module subroutine source_damage_isoBrittle_getRateAndItsTangent(localphiDot, dLocalphiDot_dPhi, phi, phase, constituent)
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integer, intent(in) :: &
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phase, &
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constituent
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real(pReal), intent(in) :: &
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phi
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real(pReal), intent(out) :: &
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localphiDot, &
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dLocalphiDot_dPhi
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integer :: &
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sourceOffset
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sourceOffset = source_damage_isoBrittle_offset(phase)
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associate(prm => param(source_damage_isoBrittle_instance(phase)))
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localphiDot = 1.0_pReal &
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- phi*sourceState(phase)%p(sourceOffset)%state(1,constituent)
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dLocalphiDot_dPhi = - sourceState(phase)%p(sourceOffset)%state(1,constituent)
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end associate
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end subroutine source_damage_isoBrittle_getRateAndItsTangent
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!--------------------------------------------------------------------------------------------------
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!> @brief writes results to HDF5 output file
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!--------------------------------------------------------------------------------------------------
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module subroutine source_damage_isoBrittle_results(phase,group)
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integer, intent(in) :: phase
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character(len=*), intent(in) :: group
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integer :: o
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associate(prm => param(source_damage_isoBrittle_instance(phase)), &
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stt => sourceState(phase)%p(source_damage_isoBrittle_offset(phase))%state)
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outputsLoop: do o = 1,size(prm%output)
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select case(trim(prm%output(o)))
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case ('f_phi')
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call results_writeDataset(group,stt,trim(prm%output(o)),'driving force','J/m³')
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end select
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enddo outputsLoop
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end associate
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end subroutine source_damage_isoBrittle_results
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end submodule source_damage_isoBrittle
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