343 lines
18 KiB
Fortran
343 lines
18 KiB
Fortran
!--------------------------------------------------------------------------------------------------
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!> @author Pratheek Shanthraj, Max-Planck-Institut für Eisenforschung GmbH
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!> @author Martin Diehl, Max-Planck-Institut für Eisenforschung GmbH
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!> @author Philip Eisenlohr, Max-Planck-Institut für Eisenforschung GmbH
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!> @brief Driver controlling inner and outer load case looping of the FEM solver
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!> @details doing cutbacking, reporting statistics, writing
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!> results
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!--------------------------------------------------------------------------------------------------
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program DAMASK_mesh
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#include <petsc/finclude/petscsys.h>
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use PetscDM
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use prec
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use DAMASK_interface
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use parallelization
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use IO
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use math
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use CPFEM2
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use config
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use discretization_mesh
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use FEM_Utilities
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use mesh_mechanical_FEM
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implicit none
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type :: tLoadCase
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real(pReal) :: time = 0.0_pReal !< length of increment
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integer :: incs = 0, & !< number of increments
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outputfrequency = 1 !< frequency of result writes
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logical :: followFormerTrajectory = .true. !< follow trajectory of former loadcase
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integer, allocatable, dimension(:) :: faceID
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type(tFieldBC), allocatable, dimension(:) :: fieldBC
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end type tLoadCase
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!--------------------------------------------------------------------------------------------------
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! variables related to information from load case and geom file
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integer, allocatable, dimension(:) :: chunkPos ! this is longer than needed for geometry parsing
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integer :: &
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N_def = 0 !< # of rate of deformation specifiers found in load case file
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character(len=:), allocatable :: &
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line
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!--------------------------------------------------------------------------------------------------
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! loop variables, convergence etc.
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integer, parameter :: &
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subStepFactor = 2 !< for each substep, divide the last time increment by 2.0
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real(pReal) :: &
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time = 0.0_pReal, & !< elapsed time
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time0 = 0.0_pReal, & !< begin of interval
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timeinc = 0.0_pReal, & !< current time interval
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timeIncOld = 0.0_pReal, & !< previous time interval
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remainingLoadCaseTime = 0.0_pReal !< remaining time of current load case
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logical :: &
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guess, & !< guess along former trajectory
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stagIterate
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integer :: &
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l, &
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i, &
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errorID, &
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cutBackLevel = 0, & !< cut back level \f$ t = \frac{t_{inc}}{2^l} \f$
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stepFraction = 0, & !< fraction of current time interval
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currentLoadcase = 0, & !< current load case
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currentFace = 0, &
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inc, & !< current increment in current load case
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totalIncsCounter = 0, & !< total # of increments
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statUnit = 0, & !< file unit for statistics output
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stagIter, &
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component
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class(tNode), pointer :: &
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num_mesh
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character(len=pStringLen), dimension(:), allocatable :: fileContent
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character(len=pStringLen) :: &
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incInfo, &
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loadcase_string
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integer :: &
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stagItMax, & !< max number of field level staggered iterations
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maxCutBack !< max number of cutbacks
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type(tLoadCase), allocatable, dimension(:) :: loadCases !< array of all load cases
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type(tSolutionState), allocatable, dimension(:) :: solres
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PetscInt :: faceSet, currentFaceSet, dimPlex
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PetscErrorCode :: ierr
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integer(kind(COMPONENT_UNDEFINED_ID)) :: ID
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external :: &
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quit
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!--------------------------------------------------------------------------------------------------
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! init DAMASK (all modules)
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call CPFEM_initAll
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print'(/,a)', ' <<<+- DAMASK_mesh init -+>>>'; flush(IO_STDOUT)
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!---------------------------------------------------------------------
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! reading field information from numerics file and do sanity checks
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num_mesh => config_numerics%get('mesh', defaultVal=emptyDict)
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stagItMax = num_mesh%get_asInt('maxStaggeredIter',defaultVal=10)
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maxCutBack = num_mesh%get_asInt('maxCutBack',defaultVal=3)
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if (stagItMax < 0) call IO_error(301,ext_msg='maxStaggeredIter')
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if (maxCutBack < 0) call IO_error(301,ext_msg='maxCutBack')
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! reading basic information from load case file and allocate data structure containing load cases
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call DMGetDimension(geomMesh,dimPlex,ierr) !< dimension of mesh (2D or 3D)
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CHKERRA(ierr)
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allocate(solres(1))
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!--------------------------------------------------------------------------------------------------
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! reading basic information from load case file and allocate data structure containing load cases
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fileContent = IO_readlines(trim(interface_loadFile))
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do l = 1, size(fileContent)
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line = fileContent(l)
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if (IO_isBlank(line)) cycle ! skip empty lines
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chunkPos = IO_stringPos(line)
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do i = 1, chunkPos(1) ! reading compulsory parameters for loadcase
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select case (IO_stringValue(line,chunkPos,i))
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case('$Loadcase')
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N_def = N_def + 1
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end select
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enddo ! count all identifiers to allocate memory and do sanity check
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enddo
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if(N_def < 1) call IO_error(error_ID = 837)
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allocate(loadCases(N_def))
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do i = 1, size(loadCases)
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allocate(loadCases(i)%fieldBC(1))
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loadCases(i)%fieldBC(1)%ID = FIELD_MECH_ID
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enddo
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do i = 1, size(loadCases)
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loadCases(i)%fieldBC(1)%nComponents = dimPlex !< X, Y (, Z) displacements
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allocate(loadCases(i)%fieldBC(1)%componentBC(loadCases(i)%fieldBC(1)%nComponents))
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do component = 1, loadCases(i)%fieldBC(1)%nComponents
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select case (component)
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case (1)
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loadCases(i)%fieldBC(1)%componentBC(component)%ID = COMPONENT_MECH_X_ID
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case (2)
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loadCases(i)%fieldBC(1)%componentBC(component)%ID = COMPONENT_MECH_Y_ID
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case (3)
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loadCases(i)%fieldBC(1)%componentBC(component)%ID = COMPONENT_MECH_Z_ID
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end select
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enddo
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do component = 1, loadCases(i)%fieldBC(1)%nComponents
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allocate(loadCases(i)%fieldBC(1)%componentBC(component)%Value(mesh_Nboundaries), source = 0.0_pReal)
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allocate(loadCases(i)%fieldBC(1)%componentBC(component)%Mask (mesh_Nboundaries), source = .false.)
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enddo
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enddo
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!--------------------------------------------------------------------------------------------------
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! reading the load case and assign values to the allocated data structure
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do l = 1, size(fileContent)
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line = fileContent(l)
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if (IO_isBlank(line)) cycle ! skip empty lines
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chunkPos = IO_stringPos(line)
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do i = 1, chunkPos(1)
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select case (IO_stringValue(line,chunkPos,i))
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!--------------------------------------------------------------------------------------------------
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! loadcase information
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case('$Loadcase')
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currentLoadCase = IO_intValue(line,chunkPos,i+1)
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case('Face')
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currentFace = IO_intValue(line,chunkPos,i+1)
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currentFaceSet = -1
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do faceSet = 1, mesh_Nboundaries
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if (mesh_boundaries(faceSet) == currentFace) currentFaceSet = faceSet
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enddo
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if (currentFaceSet < 0) call IO_error(error_ID = 837, ext_msg = 'invalid BC')
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case('t')
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loadCases(currentLoadCase)%time = IO_floatValue(line,chunkPos,i+1)
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case('N')
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loadCases(currentLoadCase)%incs = IO_intValue(line,chunkPos,i+1)
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case('f_out')
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loadCases(currentLoadCase)%outputfrequency = IO_intValue(line,chunkPos,i+1)
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case('estimate_rate')
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loadCases(currentLoadCase)%followFormerTrajectory = .false. ! do not continue to predict deformation along former trajectory
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!--------------------------------------------------------------------------------------------------
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! boundary condition information
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case('X','Y','Z')
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select case(IO_stringValue(line,chunkPos,i))
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case('X')
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ID = COMPONENT_MECH_X_ID
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case('Y')
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ID = COMPONENT_MECH_Y_ID
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case('Z')
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ID = COMPONENT_MECH_Z_ID
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end select
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do component = 1, loadcases(currentLoadCase)%fieldBC(1)%nComponents
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if (loadCases(currentLoadCase)%fieldBC(1)%componentBC(component)%ID == ID) then
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loadCases(currentLoadCase)%fieldBC(1)%componentBC(component)%Mask (currentFaceSet) = &
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.true.
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loadCases(currentLoadCase)%fieldBC(1)%componentBC(component)%Value(currentFaceSet) = &
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IO_floatValue(line,chunkPos,i+1)
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endif
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enddo
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end select
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enddo
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enddo
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!--------------------------------------------------------------------------------------------------
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! consistency checks and output of load case
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loadCases(1)%followFormerTrajectory = .false. ! cannot guess along trajectory for first inc of first currentLoadCase
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errorID = 0
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checkLoadcases: do currentLoadCase = 1, size(loadCases)
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write (loadcase_string, '(i0)' ) currentLoadCase
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print'(a,i0)', ' load case: ', currentLoadCase
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if (.not. loadCases(currentLoadCase)%followFormerTrajectory) &
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print'(a)', ' drop guessing along trajectory'
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print'(a)', ' Field '//trim(FIELD_MECH_label)
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do faceSet = 1, mesh_Nboundaries
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do component = 1, loadCases(currentLoadCase)%fieldBC(1)%nComponents
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if (loadCases(currentLoadCase)%fieldBC(1)%componentBC(component)%Mask(faceSet)) &
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print'(a,i2,a,i2,a,f12.7)', ' Face ', mesh_boundaries(faceSet), &
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' Component ', component, &
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' Value ', loadCases(currentLoadCase)%fieldBC(1)% &
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componentBC(component)%Value(faceSet)
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enddo
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enddo
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print'(a,f12.6)', ' time: ', loadCases(currentLoadCase)%time
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if (loadCases(currentLoadCase)%incs < 1) errorID = 835 ! non-positive incs count
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print'(a,i5)', ' increments: ', loadCases(currentLoadCase)%incs
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if (loadCases(currentLoadCase)%outputfrequency < 1) errorID = 836 ! non-positive result frequency
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print'(a,i5)', ' output frequency: ', &
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loadCases(currentLoadCase)%outputfrequency
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if (errorID > 0) call IO_error(error_ID = errorID, ext_msg = loadcase_string) ! exit with error message
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enddo checkLoadcases
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!--------------------------------------------------------------------------------------------------
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! doing initialization depending on active solvers
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call FEM_Utilities_init
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call FEM_mechanical_init(loadCases(1)%fieldBC(1))
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if (worldrank == 0) then
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open(newunit=statUnit,file=trim(getSolverJobName())//'.sta',form='FORMATTED',status='REPLACE')
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write(statUnit,'(a)') 'Increment Time CutbackLevel Converged IterationsNeeded' ! statistics file
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endif
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print'(/,a)', ' ... writing initial configuration to file ........................'
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flush(IO_STDOUT)
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call CPFEM_results(0,0.0_pReal)
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loadCaseLooping: do currentLoadCase = 1, size(loadCases)
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time0 = time ! load case start time
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guess = loadCases(currentLoadCase)%followFormerTrajectory ! change of load case? homogeneous guess for the first inc
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incLooping: do inc = 1, loadCases(currentLoadCase)%incs
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totalIncsCounter = totalIncsCounter + 1
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!--------------------------------------------------------------------------------------------------
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! forwarding time
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timeIncOld = timeinc ! last timeinc that brought former inc to an end
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timeinc = loadCases(currentLoadCase)%time/real(loadCases(currentLoadCase)%incs,pReal)
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timeinc = timeinc * real(subStepFactor,pReal)**real(-cutBackLevel,pReal) ! depending on cut back level, decrease time step
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stepFraction = 0 ! fraction scaled by stepFactor**cutLevel
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subStepLooping: do while (stepFraction < subStepFactor**cutBackLevel)
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remainingLoadCaseTime = loadCases(currentLoadCase)%time+time0 - time
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time = time + timeinc ! forward target time
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stepFraction = stepFraction + 1 ! count step
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!--------------------------------------------------------------------------------------------------
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! report begin of new step
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print'(/,a)', ' ###########################################################################'
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print'(1x,a,es12.5,6(a,i0))',&
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'Time', time, &
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's: Increment ', inc, '/', loadCases(currentLoadCase)%incs,&
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'-', stepFraction, '/', subStepFactor**cutBackLevel,&
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' of load case ', currentLoadCase,'/',size(loadCases)
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write(incInfo,'(4(a,i0))') &
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'Increment ',totalIncsCounter,'/',sum(loadCases%incs),&
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'-',stepFraction, '/', subStepFactor**cutBackLevel
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flush(IO_STDOUT)
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call FEM_mechanical_forward(guess,timeinc,timeIncOld,loadCases(currentLoadCase)%fieldBC(1))
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!--------------------------------------------------------------------------------------------------
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! solve fields
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stagIter = 0
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stagIterate = .true.
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do while (stagIterate)
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solres(1) = FEM_mechanical_solution(incInfo,timeinc,timeIncOld,loadCases(currentLoadCase)%fieldBC(1))
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if(.not. solres(1)%converged) exit
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stagIter = stagIter + 1
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stagIterate = stagIter < stagItMax &
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.and. all(solres(:)%converged) &
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.and. .not. all(solres(:)%stagConverged) ! stationary with respect to staggered iteration
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enddo
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! check solution
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cutBack = .False.
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if(.not. all(solres(:)%converged .and. solres(:)%stagConverged)) then ! no solution found
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if (cutBackLevel < maxCutBack) then ! do cut back
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cutBack = .True.
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stepFraction = (stepFraction - 1) * subStepFactor ! adjust to new denominator
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cutBackLevel = cutBackLevel + 1
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time = time - timeinc ! rewind time
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timeinc = timeinc/2.0_pReal
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print'(/,a)', ' cutting back'
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else ! default behavior, exit if spectral solver does not converge
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if (worldrank == 0) close(statUnit)
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call IO_error(950)
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endif
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else
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guess = .true. ! start guessing after first converged (sub)inc
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timeIncOld = timeinc
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endif
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if (.not. cutBack .and. worldrank == 0) &
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write(statUnit,*) totalIncsCounter, time, cutBackLevel, &
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solres%converged, solres%iterationsNeeded ! write statistics about accepted solution
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enddo subStepLooping
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cutBackLevel = max(0, cutBackLevel - 1) ! try half number of subincs next inc
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if (all(solres(:)%converged)) then
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print'(/,a,i0,a)', ' increment ', totalIncsCounter, ' converged'
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else
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print'(/,a,i0,a)', ' increment ', totalIncsCounter, ' NOT converged'
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endif; flush(IO_STDOUT)
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if (mod(inc,loadCases(currentLoadCase)%outputFrequency) == 0) then ! at output frequency
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print'(/,a)', ' ... writing results to file ......................................'
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call FEM_mechanical_updateCoords
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call CPFEM_results(totalIncsCounter,time)
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endif
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enddo incLooping
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enddo loadCaseLooping
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!--------------------------------------------------------------------------------------------------
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! report summary of whole calculation
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print'(/,a)', ' ###########################################################################'
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if (worldrank == 0) close(statUnit)
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call quit(0) ! no complains ;)
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end program DAMASK_mesh
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