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using also variable cutback factor for Li

This commit is contained in:
Martin Diehl 2017-04-28 14:31:03 +02:00
parent 295bcd20f0
commit 590a5c8b91
2 changed files with 10 additions and 5 deletions
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10
src/crystallite.f90
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@ -3179,7 +3179,9 @@ logical function crystallite_integrateStress(&
aTol_crystalliteStress, &
rTol_crystalliteStress, &
iJacoLpresiduum, &
numerics_integrationMode
numerics_integrationMode, &
subStepSizeLp, &
subStepSizeLi
use debug, only: debug_level, &
debug_crystallite, &
debug_levelBasic, &
@ -3265,9 +3267,7 @@ logical function crystallite_integrateStress(&
dLp_dT3333, &
dLi_dT3333
real(pReal) detInvFi, & ! determinant of InvFi
steplengthLp0, &
steplengthLp, &
steplengthLi0, &
steplengthLi, &
dt, & ! time increment
aTolLp, &
@ -3529,9 +3529,9 @@ logical function crystallite_integrateStress(&
.or. norm2(residuumLi) < norm2(residuumLi_old)) then ! not converged, but improved norm of residuum (always proceed in first iteration)...
residuumLi_old = residuumLi ! ...remember old values and...
Liguess_old = Liguess
steplengthLi = steplengthLi0 ! ...proceed with normal step length (calculate new search direction)
steplengthLi = 1.0_pReal ! ...proceed with normal step length (calculate new search direction)
else ! not converged and residuum not improved...
steplengthLi = 0.5_pReal * steplengthLi ! ...try with smaller step length in same direction
steplengthLi = subStepSizeLi * steplengthLi ! ...try with smaller step length in same direction
Liguess = Liguess_old + steplengthLi * deltaLi
cycle LiLoop
endif

5
src/numerics.f90
View File

@ -43,6 +43,7 @@ module numerics
subStepSizeCryst = 0.25_pReal, & !< size of first substep when cutback in crystallite
subStepSizeHomog = 0.25_pReal, & !< size of first substep when cutback in homogenization
subStepSizeLp = 0.5_pReal, & !< size of first substep when cutback in Lp calculation
subStepSizeLi = 0.5_pReal, & !< size of first substep when cutback in Li calculation
stepIncreaseCryst = 1.5_pReal, & !< increase of next substep size when previous substep converged in crystallite
stepIncreaseHomog = 1.5_pReal, & !< increase of next substep size when previous substep converged in homogenization
rTol_crystalliteState = 1.0e-6_pReal, & !< relative tolerance in crystallite state loop
@ -298,6 +299,8 @@ subroutine numerics_init
stepIncreaseCryst = IO_floatValue(line,chunkPos,2_pInt)
case ('substepsizelp')
subStepSizeLp = IO_floatValue(line,chunkPos,2_pInt)
case ('substepsizeli')
subStepSizeLi = IO_floatValue(line,chunkPos,2_pInt)
case ('substepminhomog')
subStepMinHomog = IO_floatValue(line,chunkPos,2_pInt)
case ('substepsizehomog')
@ -519,6 +522,7 @@ subroutine numerics_init
write(6,'(a24,1x,es8.1)') ' subStepSizeCryst: ',subStepSizeCryst
write(6,'(a24,1x,es8.1)') ' stepIncreaseCryst: ',stepIncreaseCryst
write(6,'(a24,1x,es8.1)') ' subStepSizeLp: ',subStepSizeLp
write(6,'(a24,1x,es8.1)') ' subStepSizeLi: ',subStepSizeLi
write(6,'(a24,1x,i8)') ' nState: ',nState
write(6,'(a24,1x,i8)') ' nStress: ',nStress
write(6,'(a24,1x,es8.1)') ' rTol_crystalliteState: ',rTol_crystalliteState
@ -648,6 +652,7 @@ subroutine numerics_init
if (subStepSizeCryst <= 0.0_pReal) call IO_error(301_pInt,ext_msg='subStepSizeCryst')
if (stepIncreaseCryst <= 0.0_pReal) call IO_error(301_pInt,ext_msg='stepIncreaseCryst')
if (subStepSizeLp <= 0.0_pReal) call IO_error(301_pInt,ext_msg='subStepSizeLp')
if (subStepSizeLi <= 0.0_pReal) call IO_error(301_pInt,ext_msg='subStepSizeLi')
if (subStepMinHomog <= 0.0_pReal) call IO_error(301_pInt,ext_msg='subStepMinHomog')
if (subStepSizeHomog <= 0.0_pReal) call IO_error(301_pInt,ext_msg='subStepSizeHomog')
if (stepIncreaseHomog <= 0.0_pReal) call IO_error(301_pInt,ext_msg='stepIncreaseHomog')