561 lines
28 KiB
Fortran
561 lines
28 KiB
Fortran
!--------------------------------------------------------------------------------------------------
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!> @author Franz Roters, Max-Planck-Institut für Eisenforschung GmbH
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!> @author Philip Eisenlohr, Max-Planck-Institut für Eisenforschung GmbH
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!> @brief material subroutine for isotropic (ISOTROPIC) plasticity
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!> @details Isotropic (ISOTROPIC) Plasticity which resembles the phenopowerlaw plasticity without
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!! resolving the stress on the slip systems. Will give the response of phenopowerlaw for an
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!! untextured polycrystal
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!--------------------------------------------------------------------------------------------------
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module plastic_isotropic
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use prec, only: &
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pReal,&
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pInt
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implicit none
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private
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integer(pInt), dimension(:,:), allocatable, target, public :: &
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plastic_isotropic_sizePostResult !< size of each post result output
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character(len=64), dimension(:,:), allocatable, target, public :: &
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plastic_isotropic_output !< name of each post result output
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integer(pInt), dimension(:), allocatable, target, public :: &
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plastic_isotropic_Noutput !< number of outputs per instance
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enum, bind(c)
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enumerator :: undefined_ID, &
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flowstress_ID, &
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strainrate_ID
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end enum
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type, private :: tParameters !< container type for internal constitutive parameters
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integer(kind(undefined_ID)), allocatable, dimension(:) :: &
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outputID
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real(pReal) :: &
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fTaylor, &
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tau0, &
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gdot0, &
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n, &
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h0, &
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h0_slopeLnRate, &
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tausat, &
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a, &
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aTolFlowstress, &
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aTolShear, &
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tausat_SinhFitA, &
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tausat_SinhFitB, &
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tausat_SinhFitC, &
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tausat_SinhFitD
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logical :: &
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dilatation
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end type
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type(tParameters), dimension(:), allocatable, target, private :: param !< containers of constitutive parameters (len Ninstance)
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type, private :: tIsotropicState !< internal state aliases
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real(pReal), pointer, dimension(:) :: & ! scalars along NipcMyInstance
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flowstress, &
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accumulatedShear
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end type
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type(tIsotropicState), allocatable, dimension(:), private :: & !< state aliases per instance
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state, &
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dotState
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public :: &
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plastic_isotropic_init, &
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plastic_isotropic_LpAndItsTangent, &
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plastic_isotropic_LiAndItsTangent, &
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plastic_isotropic_dotState, &
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plastic_isotropic_postResults
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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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subroutine plastic_isotropic_init()
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#if defined(__GFORTRAN__) || __INTEL_COMPILER >= 1800
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use, intrinsic :: iso_fortran_env, only: &
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compiler_version, &
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compiler_options
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#endif
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use IO
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use debug, only: &
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debug_level, &
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debug_constitutive, &
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debug_levelBasic
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use numerics, only: &
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numerics_integrator
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use math, only: &
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math_Mandel3333to66, &
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math_Voigt66to3333
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use material, only: &
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phase_plasticity, &
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phase_plasticityInstance, &
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phase_Noutput, &
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PLASTICITY_ISOTROPIC_label, &
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PLASTICITY_ISOTROPIC_ID, &
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material_phase, &
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plasticState
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use config, only: &
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MATERIAL_partPhase, &
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config_phase
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use lattice
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implicit none
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type(tParameters), pointer :: prm
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integer(pInt) :: &
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phase, &
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instance, &
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maxNinstance, &
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sizeDotState, &
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sizeState, &
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sizeDeltaState
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character(len=65536) :: &
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extmsg = ''
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integer(pInt) :: NipcMyPhase,i
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character(len=65536), dimension(:), allocatable :: outputs
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write(6,'(/,a)') ' <<<+- constitutive_'//PLASTICITY_ISOTROPIC_label//' init -+>>>'
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write(6,'(a15,a)') ' Current time: ',IO_timeStamp()
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#include "compilation_info.f90"
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maxNinstance = int(count(phase_plasticity == PLASTICITY_ISOTROPIC_ID),pInt)
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if (iand(debug_level(debug_constitutive),debug_levelBasic) /= 0_pInt) &
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write(6,'(a16,1x,i5,/)') '# instances:',maxNinstance
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! public variables
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allocate(plastic_isotropic_sizePostResult(maxval(phase_Noutput), maxNinstance),source=0_pInt)
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allocate(plastic_isotropic_output(maxval(phase_Noutput), maxNinstance))
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plastic_isotropic_output = ''
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allocate(plastic_isotropic_Noutput(maxNinstance), source=0_pInt)
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allocate(param(maxNinstance)) ! one container of parameters per instance
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allocate(state(maxNinstance)) ! internal state aliases
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allocate(dotState(maxNinstance))
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do phase = 1_pInt, size(phase_plasticityInstance)
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if (phase_plasticity(phase) == PLASTICITY_ISOTROPIC_ID) then
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instance = phase_plasticityInstance(phase)
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prm => param(instance) ! shorthand pointer to parameter object of my constitutive law
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prm%tau0 = config_phase(phase)%getFloat('tau0')
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prm%tausat = config_phase(phase)%getFloat('tausat')
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prm%gdot0 = config_phase(phase)%getFloat('gdot0')
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prm%n = config_phase(phase)%getFloat('n')
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prm%h0 = config_phase(phase)%getFloat('h0')
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prm%fTaylor = config_phase(phase)%getFloat('m')
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prm%h0_slopeLnRate = config_phase(phase)%getFloat('h0_slopelnrate', defaultVal=0.0_pReal)
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prm%tausat_SinhFitA = config_phase(phase)%getFloat('tausat_sinhfita',defaultVal=0.0_pReal)
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prm%tausat_SinhFitB = config_phase(phase)%getFloat('tausat_sinhfitb',defaultVal=0.0_pReal)
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prm%tausat_SinhFitC = config_phase(phase)%getFloat('tausat_sinhfitc',defaultVal=0.0_pReal)
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prm%tausat_SinhFitD = config_phase(phase)%getFloat('tausat_sinhfitd',defaultVal=0.0_pReal)
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prm%a = config_phase(phase)%getFloat('a')
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prm%aTolFlowStress = config_phase(phase)%getFloat('atol_flowstress',defaultVal=1.0_pReal)
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prm%aTolShear = config_phase(phase)%getFloat('atol_shear',defaultVal=1.0e-6_pReal)
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prm%dilatation = config_phase(phase)%keyExists('/dilatation/')
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#if defined(__GFORTRAN__)
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outputs = ['GfortranBug86277']
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outputs = config_phase(phase)%getStrings('(output)',defaultVal=outputs)
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if (outputs(1) == 'GfortranBug86277') outputs = [character(len=65536)::]
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#else
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outputs = config_phase(phase)%getStrings('(output)',defaultVal=[character(len=65536)::])
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#endif
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allocate(prm%outputID(0))
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do i=1_pInt, size(outputs)
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select case(outputs(i))
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case ('flowstress')
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plastic_isotropic_Noutput(instance) = plastic_isotropic_Noutput(instance) + 1_pInt
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plastic_isotropic_output(plastic_isotropic_Noutput(instance),instance) = outputs(i)
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plasticState(phase)%sizePostResults = plasticState(phase)%sizePostResults + 1_pInt
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plastic_isotropic_sizePostResult(i,instance) = 1_pInt
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prm%outputID = [prm%outputID,flowstress_ID]
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case ('strainrate')
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plastic_isotropic_Noutput(instance) = plastic_isotropic_Noutput(instance) + 1_pInt
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plastic_isotropic_output(plastic_isotropic_Noutput(instance),instance) = outputs(i)
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plasticState(phase)%sizePostResults = &
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plasticState(phase)%sizePostResults + 1_pInt
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plastic_isotropic_sizePostResult(i,instance) = 1_pInt
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prm%outputID = [prm%outputID,strainrate_ID]
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end select
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enddo
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!--------------------------------------------------------------------------------------------------
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! sanity checks
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extmsg = ''
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if (prm%aTolShear <= 0.0_pReal) extmsg = trim(extmsg)//"'aTolShear' "
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if (prm%tau0 < 0.0_pReal) extmsg = trim(extmsg)//"'tau0' "
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if (prm%gdot0 <= 0.0_pReal) extmsg = trim(extmsg)//"'gdot0' "
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if (prm%n <= 0.0_pReal) extmsg = trim(extmsg)//"'n' "
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if (prm%tausat <= prm%tau0) extmsg = trim(extmsg)//"'tausat' "
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if (prm%a <= 0.0_pReal) extmsg = trim(extmsg)//"'a' "
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if (prm%fTaylor <= 0.0_pReal) extmsg = trim(extmsg)//"'m' "
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if (prm%aTolFlowstress <= 0.0_pReal) extmsg = trim(extmsg)//"'atol_flowstress' "
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if (extmsg /= '') call IO_error(211_pInt,ip=instance,&
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ext_msg=trim(extmsg)//'('//PLASTICITY_ISOTROPIC_label//')')
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!--------------------------------------------------------------------------------------------------
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! allocate state arrays
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NipcMyPhase = count(material_phase == phase) ! number of own material points (including point components ipc)
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sizeDotState = size(["flowstress ","accumulated_shear"])
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sizeDeltaState = 0_pInt ! no sudden jumps in state
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sizeState = sizeDotState + sizeDeltaState
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plasticState(phase)%sizeState = sizeState
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plasticState(phase)%sizeDotState = sizeDotState
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plasticState(phase)%sizeDeltaState = sizeDeltaState
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plasticState(phase)%nSlip = 1
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allocate(plasticState(phase)%aTolState ( sizeState))
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allocate(plasticState(phase)%state0 ( sizeState,NipcMyPhase),source=0.0_pReal)
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allocate(plasticState(phase)%partionedState0 ( sizeState,NipcMyPhase),source=0.0_pReal)
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allocate(plasticState(phase)%subState0 ( sizeState,NipcMyPhase),source=0.0_pReal)
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allocate(plasticState(phase)%state ( sizeState,NipcMyPhase),source=0.0_pReal)
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allocate(plasticState(phase)%dotState (sizeDotState,NipcMyPhase),source=0.0_pReal)
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allocate(plasticState(phase)%deltaState (sizeDeltaState,NipcMyPhase),source=0.0_pReal)
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if (any(numerics_integrator == 1_pInt)) then
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allocate(plasticState(phase)%previousDotState (sizeDotState,NipcMyPhase),source=0.0_pReal)
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allocate(plasticState(phase)%previousDotState2(sizeDotState,NipcMyPhase),source=0.0_pReal)
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endif
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if (any(numerics_integrator == 4_pInt)) &
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allocate(plasticState(phase)%RK4dotState (sizeDotState,NipcMyPhase),source=0.0_pReal)
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if (any(numerics_integrator == 5_pInt)) &
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allocate(plasticState(phase)%RKCK45dotState (6,sizeDotState,NipcMyPhase),source=0.0_pReal)
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!--------------------------------------------------------------------------------------------------
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! locally defined state aliases and initialization of state0 and aTolState
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state(instance)%flowstress => plasticState(phase)%state (1,1:NipcMyPhase)
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dotState(instance)%flowstress => plasticState(phase)%dotState (1,1:NipcMyPhase)
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plasticState(phase)%state0(1,1:NipcMyPhase) = prm%tau0
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plasticState(phase)%aTolState(1) = prm%aTolFlowstress
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state(instance)%accumulatedShear => plasticState(phase)%state (2,1:NipcMyPhase)
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dotState(instance)%accumulatedShear => plasticState(phase)%dotState (2,1:NipcMyPhase)
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plasticState(phase)%state0 (2,1:NipcMyPhase) = 0.0_pReal
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plasticState(phase)%aTolState(2) = prm%aTolShear
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! global alias
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plasticState(phase)%slipRate => plasticState(phase)%dotState(2:2,1:NipcMyPhase)
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plasticState(phase)%accumulatedSlip => plasticState(phase)%state (2:2,1:NipcMyPhase)
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endif
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enddo
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end subroutine plastic_isotropic_init
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!--------------------------------------------------------------------------------------------------
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!> @brief calculates plastic velocity gradient and its tangent
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!--------------------------------------------------------------------------------------------------
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subroutine plastic_isotropic_LpAndItsTangent(Lp,dLp_dTstar99,Tstar_v,ipc,ip,el)
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use debug, only: &
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debug_level, &
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debug_constitutive, &
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debug_levelBasic, &
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debug_levelExtensive, &
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debug_levelSelective, &
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debug_e, &
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debug_i, &
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debug_g
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use math, only: &
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math_mul6x6, &
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math_Mandel6to33, &
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math_Plain3333to99, &
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math_deviatoric33, &
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math_mul33xx33
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use material, only: &
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phasememberAt, &
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material_phase, &
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phase_plasticityInstance
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implicit none
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real(pReal), dimension(3,3), intent(out) :: &
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Lp !< plastic velocity gradient
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real(pReal), dimension(9,9), intent(out) :: &
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dLp_dTstar99 !< derivative of Lp with respect to 2nd Piola Kirchhoff stress
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real(pReal), dimension(6), intent(in) :: &
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Tstar_v !< 2nd Piola Kirchhoff stress tensor in Mandel notation
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integer(pInt), intent(in) :: &
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ipc, & !< component-ID of integration point
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ip, & !< integration point
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el !< element
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type(tParameters), pointer :: prm
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real(pReal), dimension(3,3) :: &
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Tstar_dev_33 !< deviatoric part of the 2nd Piola Kirchhoff stress tensor as 2nd order tensor
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real(pReal), dimension(3,3,3,3) :: &
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dLp_dTstar_3333 !< derivative of Lp with respect to Tstar as 4th order tensor
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real(pReal) :: &
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gamma_dot, & !< strainrate
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norm_Tstar_dev, & !< euclidean norm of Tstar_dev
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squarenorm_Tstar_dev !< square of the euclidean norm of Tstar_dev
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integer(pInt) :: &
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instance, of, &
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k, l, m, n
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of = phasememberAt(ipc,ip,el) ! phasememberAt should be tackled by material and be renamed to material_phasemember
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instance = phase_plasticityInstance(material_phase(ipc,ip,el))
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prm => param(instance)
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Tstar_dev_33 = math_deviatoric33(math_Mandel6to33(Tstar_v)) ! deviatoric part of 2nd Piola-Kirchhoff stress
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squarenorm_Tstar_dev = math_mul33xx33(Tstar_dev_33,Tstar_dev_33)
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norm_Tstar_dev = sqrt(squarenorm_Tstar_dev)
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if (norm_Tstar_dev <= 0.0_pReal) then ! Tstar == 0 --> both Lp and dLp_dTstar are zero
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Lp = 0.0_pReal
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dLp_dTstar99 = 0.0_pReal
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else
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gamma_dot = prm%gdot0 &
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* ( sqrt(1.5_pReal) * norm_Tstar_dev / prm%fTaylor / state(instance)%flowstress(of) ) &
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**prm%n
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Lp = Tstar_dev_33/norm_Tstar_dev * gamma_dot/prm%fTaylor
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if (iand(debug_level(debug_constitutive), debug_levelExtensive) /= 0_pInt &
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.and. ((el == debug_e .and. ip == debug_i .and. ipc == debug_g) &
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.or. .not. iand(debug_level(debug_constitutive),debug_levelSelective) /= 0_pInt)) then
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write(6,'(a,i8,1x,i2,1x,i3)') '<< CONST isotropic >> at el ip g ',el,ip,ipc
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write(6,'(/,a,/,3(12x,3(f12.4,1x)/))') '<< CONST isotropic >> Tstar (dev) / MPa', &
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transpose(Tstar_dev_33(1:3,1:3))*1.0e-6_pReal
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write(6,'(/,a,/,f12.5)') '<< CONST isotropic >> norm Tstar / MPa', norm_Tstar_dev*1.0e-6_pReal
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write(6,'(/,a,/,f12.5)') '<< CONST isotropic >> gdot', gamma_dot
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end if
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!--------------------------------------------------------------------------------------------------
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! Calculation of the tangent of Lp
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forall (k=1_pInt:3_pInt,l=1_pInt:3_pInt,m=1_pInt:3_pInt,n=1_pInt:3_pInt) &
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dLp_dTstar_3333(k,l,m,n) = (prm%n-1.0_pReal) * &
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Tstar_dev_33(k,l)*Tstar_dev_33(m,n) / squarenorm_Tstar_dev
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forall (k=1_pInt:3_pInt,l=1_pInt:3_pInt) &
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dLp_dTstar_3333(k,l,k,l) = dLp_dTstar_3333(k,l,k,l) + 1.0_pReal
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forall (k=1_pInt:3_pInt,m=1_pInt:3_pInt) &
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dLp_dTstar_3333(k,k,m,m) = dLp_dTstar_3333(k,k,m,m) - 1.0_pReal/3.0_pReal
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dLp_dTstar99 = math_Plain3333to99(gamma_dot / prm%fTaylor * &
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dLp_dTstar_3333 / norm_Tstar_dev)
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end if
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end subroutine plastic_isotropic_LpAndItsTangent
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!--------------------------------------------------------------------------------------------------
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!> @brief calculates plastic velocity gradient and its tangent
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!--------------------------------------------------------------------------------------------------
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subroutine plastic_isotropic_LiAndItsTangent(Li,dLi_dTstar_3333,Tstar_v,ipc,ip,el)
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use math, only: &
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math_mul6x6, &
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math_Mandel6to33, &
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math_Plain3333to99, &
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math_spherical33, &
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math_mul33xx33
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use material, only: &
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phasememberAt, &
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material_phase, &
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phase_plasticityInstance
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implicit none
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real(pReal), dimension(3,3), intent(out) :: &
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Li !< plastic velocity gradient
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real(pReal), dimension(3,3,3,3), intent(out) :: &
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dLi_dTstar_3333 !< derivative of Li with respect to Tstar as 4th order tensor
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real(pReal), dimension(6), intent(in) :: &
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Tstar_v !< 2nd Piola Kirchhoff stress tensor in Mandel notation
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integer(pInt), intent(in) :: &
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ipc, & !< component-ID of integration point
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ip, & !< integration point
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el !< element
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type(tParameters), pointer :: prm
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real(pReal), dimension(3,3) :: &
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Tstar_sph_33 !< sphiatoric part of the 2nd Piola Kirchhoff stress tensor as 2nd order tensor
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real(pReal) :: &
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gamma_dot, & !< strainrate
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norm_Tstar_sph, & !< euclidean norm of Tstar_sph
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squarenorm_Tstar_sph !< square of the euclidean norm of Tstar_sph
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integer(pInt) :: &
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instance, of, &
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k, l, m, n
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of = phasememberAt(ipc,ip,el) ! phasememberAt should be tackled by material and be renamed to material_phasemember
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instance = phase_plasticityInstance(material_phase(ipc,ip,el))
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prm => param(instance)
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Tstar_sph_33 = math_spherical33(math_Mandel6to33(Tstar_v)) ! spherical part of 2nd Piola-Kirchhoff stress
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squarenorm_Tstar_sph = math_mul33xx33(Tstar_sph_33,Tstar_sph_33)
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norm_Tstar_sph = sqrt(squarenorm_Tstar_sph)
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if (prm%dilatation .and. norm_Tstar_sph > 0.0_pReal) then ! Tstar == 0 or J2 plascitiy --> both Li and dLi_dTstar are zero
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gamma_dot = prm%gdot0 &
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* (sqrt(1.5_pReal) * norm_Tstar_sph / prm%fTaylor / state(instance)%flowstress(of) ) &
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**prm%n
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Li = Tstar_sph_33/norm_Tstar_sph * gamma_dot/prm%fTaylor
|
|
|
|
!--------------------------------------------------------------------------------------------------
|
|
! Calculation of the tangent of Li
|
|
forall (k=1_pInt:3_pInt,l=1_pInt:3_pInt,m=1_pInt:3_pInt,n=1_pInt:3_pInt) &
|
|
dLi_dTstar_3333(k,l,m,n) = (prm%n-1.0_pReal) * &
|
|
Tstar_sph_33(k,l)*Tstar_sph_33(m,n) / squarenorm_Tstar_sph
|
|
forall (k=1_pInt:3_pInt,l=1_pInt:3_pInt) &
|
|
dLi_dTstar_3333(k,l,k,l) = dLi_dTstar_3333(k,l,k,l) + 1.0_pReal
|
|
|
|
dLi_dTstar_3333 = gamma_dot / prm%fTaylor * &
|
|
dLi_dTstar_3333 / norm_Tstar_sph
|
|
else
|
|
Li = 0.0_pReal
|
|
dLi_dTstar_3333 = 0.0_pReal
|
|
endif
|
|
end subroutine plastic_isotropic_LiAndItsTangent
|
|
|
|
|
|
!--------------------------------------------------------------------------------------------------
|
|
!> @brief calculates the rate of change of microstructure
|
|
!--------------------------------------------------------------------------------------------------
|
|
subroutine plastic_isotropic_dotState(Tstar_v,ipc,ip,el)
|
|
use prec, only: &
|
|
dEq0
|
|
use math, only: &
|
|
math_mul6x6
|
|
use material, only: &
|
|
phasememberAt, &
|
|
material_phase, &
|
|
phase_plasticityInstance
|
|
|
|
implicit none
|
|
real(pReal), dimension(6), intent(in):: &
|
|
Tstar_v !< 2nd Piola Kirchhoff stress tensor in Mandel notation
|
|
integer(pInt), intent(in) :: &
|
|
ipc, & !< component-ID of integration point
|
|
ip, & !< integration point
|
|
el !< element
|
|
type(tParameters), pointer :: prm
|
|
real(pReal), dimension(6) :: &
|
|
Tstar_dev_v !< deviatoric 2nd Piola Kirchhoff stress tensor in Mandel notation
|
|
real(pReal) :: &
|
|
gamma_dot, & !< strainrate
|
|
hardening, & !< hardening coefficient
|
|
saturation, & !< saturation flowstress
|
|
norm_Tstar_v !< euclidean norm of Tstar_dev
|
|
integer(pInt) :: &
|
|
instance, & !< instance of my instance (unique number of my constitutive model)
|
|
of !< shortcut notation for offset position in state array
|
|
|
|
of = phasememberAt(ipc,ip,el) ! phasememberAt should be tackled by material and be renamed to material_phasemember
|
|
instance = phase_plasticityInstance(material_phase(ipc,ip,el))
|
|
prm => param(instance)
|
|
|
|
!--------------------------------------------------------------------------------------------------
|
|
! norm of (deviatoric) 2nd Piola-Kirchhoff stress
|
|
if (prm%dilatation) then
|
|
norm_Tstar_v = sqrt(math_mul6x6(Tstar_v,Tstar_v))
|
|
else
|
|
Tstar_dev_v(1:3) = Tstar_v(1:3) - sum(Tstar_v(1:3))/3.0_pReal
|
|
Tstar_dev_v(4:6) = Tstar_v(4:6)
|
|
norm_Tstar_v = sqrt(math_mul6x6(Tstar_dev_v,Tstar_dev_v))
|
|
end if
|
|
!--------------------------------------------------------------------------------------------------
|
|
! strain rate
|
|
gamma_dot = prm%gdot0 * ( sqrt(1.5_pReal) * norm_Tstar_v &
|
|
/ &!-----------------------------------------------------------------------------------
|
|
(prm%fTaylor*state(instance)%flowstress(of) ))**prm%n
|
|
|
|
!--------------------------------------------------------------------------------------------------
|
|
! hardening coefficient
|
|
if (abs(gamma_dot) > 1e-12_pReal) then
|
|
if (dEq0(prm%tausat_SinhFitA)) then
|
|
saturation = prm%tausat
|
|
else
|
|
saturation = prm%tausat &
|
|
+ asinh( (gamma_dot / prm%tausat_SinhFitA&
|
|
)**(1.0_pReal / prm%tausat_SinhFitD)&
|
|
)**(1.0_pReal / prm%tausat_SinhFitC) &
|
|
/ ( prm%tausat_SinhFitB &
|
|
* (gamma_dot / prm%gdot0)**(1.0_pReal / prm%n) &
|
|
)
|
|
endif
|
|
hardening = ( prm%h0 + prm%h0_slopeLnRate * log(gamma_dot) ) &
|
|
* abs( 1.0_pReal - state(instance)%flowstress(of)/saturation )**prm%a &
|
|
* sign(1.0_pReal, 1.0_pReal - state(instance)%flowstress(of)/saturation)
|
|
else
|
|
hardening = 0.0_pReal
|
|
endif
|
|
|
|
dotState(instance)%flowstress (of) = hardening * gamma_dot
|
|
dotState(instance)%accumulatedShear(of) = gamma_dot
|
|
|
|
end subroutine plastic_isotropic_dotState
|
|
|
|
!--------------------------------------------------------------------------------------------------
|
|
!> @brief return array of constitutive results
|
|
!--------------------------------------------------------------------------------------------------
|
|
function plastic_isotropic_postResults(Tstar_v,ipc,ip,el)
|
|
use math, only: &
|
|
math_mul6x6
|
|
use material, only: &
|
|
plasticState, &
|
|
material_phase, &
|
|
phasememberAt, &
|
|
phase_plasticityInstance
|
|
|
|
implicit none
|
|
real(pReal), dimension(6), intent(in) :: &
|
|
Tstar_v !< 2nd Piola Kirchhoff stress tensor in Mandel notation
|
|
integer(pInt), intent(in) :: &
|
|
ipc, & !< component-ID of integration point
|
|
ip, & !< integration point
|
|
el !< element
|
|
|
|
type(tParameters), pointer :: prm
|
|
|
|
real(pReal), dimension(plasticState(material_phase(ipc,ip,el))%sizePostResults) :: &
|
|
plastic_isotropic_postResults
|
|
|
|
real(pReal), dimension(6) :: &
|
|
Tstar_dev_v !< deviatoric 2nd Piola Kirchhoff stress tensor in Mandel notation
|
|
real(pReal) :: &
|
|
norm_Tstar_v ! euclidean norm of Tstar_dev
|
|
integer(pInt) :: &
|
|
instance, & !< instance of my instance (unique number of my constitutive model)
|
|
of, & !< shortcut notation for offset position in state array
|
|
c, &
|
|
o
|
|
|
|
of = phasememberAt(ipc,ip,el) ! phasememberAt should be tackled by material and be renamed to material_phasemember
|
|
instance = phase_plasticityInstance(material_phase(ipc,ip,el))
|
|
prm => param(instance)
|
|
|
|
!--------------------------------------------------------------------------------------------------
|
|
! norm of (deviatoric) 2nd Piola-Kirchhoff stress
|
|
if (prm%dilatation) then
|
|
norm_Tstar_v = sqrt(math_mul6x6(Tstar_v,Tstar_v))
|
|
else
|
|
Tstar_dev_v(1:3) = Tstar_v(1:3) - sum(Tstar_v(1:3))/3.0_pReal
|
|
Tstar_dev_v(4:6) = Tstar_v(4:6)
|
|
norm_Tstar_v = sqrt(math_mul6x6(Tstar_dev_v,Tstar_dev_v))
|
|
end if
|
|
|
|
c = 0_pInt
|
|
plastic_isotropic_postResults = 0.0_pReal
|
|
|
|
outputsLoop: do o = 1_pInt,plastic_isotropic_Noutput(instance)
|
|
select case(prm%outputID(o))
|
|
case (flowstress_ID)
|
|
plastic_isotropic_postResults(c+1_pInt) = state(instance)%flowstress(of)
|
|
c = c + 1_pInt
|
|
case (strainrate_ID)
|
|
plastic_isotropic_postResults(c+1_pInt) = &
|
|
prm%gdot0 * ( sqrt(1.5_pReal) * norm_Tstar_v &
|
|
/ &!----------------------------------------------------------------------------------
|
|
(prm%fTaylor * state(instance)%flowstress(of)) ) ** prm%n
|
|
c = c + 1_pInt
|
|
end select
|
|
enddo outputsLoop
|
|
|
|
end function plastic_isotropic_postResults
|
|
|
|
|
|
end module plastic_isotropic
|