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dotState=NaN enforces cutback, if evolution rates lead to negative densities

This commit is contained in:
Christoph Kords 2012-02-22 16:08:22 +00:00
parent 21db79ce25
commit 9bf5b9dc86
2 changed files with 19 additions and 5 deletions
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2
code/constitutive.f90
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@ -636,7 +636,7 @@ select case (phase_constitution(material_phase(ipc,ip,el)))
case (constitutive_nonlocal_label) case (constitutive_nonlocal_label)
call constitutive_nonlocal_dotState(constitutive_dotState(ipc,ip,el), Tstar_v, Fe, Fp, Temperature, constitutive_state, & call constitutive_nonlocal_dotState(constitutive_dotState(ipc,ip,el), Tstar_v, Fe, Fp, Temperature, constitutive_state, &
constitutive_aTolState, subdt, orientation, ipc, ip, el) subdt, orientation, ipc, ip, el)
end select end select

20
code/constitutive_nonlocal.f90
View File

@ -1516,7 +1516,7 @@ endsubroutine
!********************************************************************* !*********************************************************************
!* rate of change of microstructure * !* rate of change of microstructure *
!********************************************************************* !*********************************************************************
subroutine constitutive_nonlocal_dotState(dotState, Tstar_v, Fe, Fp, Temperature, state, aTolState, timestep, orientation, g,ip,el) subroutine constitutive_nonlocal_dotState(dotState, Tstar_v, Fe, Fp, Temperature, state, timestep, orientation, g,ip,el)
use prec, only: pReal, & use prec, only: pReal, &
pInt, & pInt, &
@ -1579,8 +1579,7 @@ real(pReal), dimension(3,3,homogenization_maxNgrains,mesh_maxNips,mesh_NcpElems)
real(pReal), dimension(4,homogenization_maxNgrains,mesh_maxNips,mesh_NcpElems), intent(in) :: & real(pReal), dimension(4,homogenization_maxNgrains,mesh_maxNips,mesh_NcpElems), intent(in) :: &
orientation ! crystal lattice orientation orientation ! crystal lattice orientation
type(p_vec), dimension(homogenization_maxNgrains,mesh_maxNips,mesh_NcpElems), intent(in) :: & type(p_vec), dimension(homogenization_maxNgrains,mesh_maxNips,mesh_NcpElems), intent(in) :: &
state, & ! current microstructural state state ! current microstructural state
aTolState ! absolute state tolerance
!*** input/output variables !*** input/output variables
type(p_vec), intent(inout) :: dotState ! evolution of state variables / microstructure type(p_vec), intent(inout) :: dotState ! evolution of state variables / microstructure
@ -1972,6 +1971,7 @@ rhoDotThermalAnnihilation(1:ns,10) = 0.0_pReal
!**************************************************************************** !****************************************************************************
!*** assign the rates of dislocation densities to my dotState !*** assign the rates of dislocation densities to my dotState
!*** if evolution rates lead to negative densities, a cutback is enforced
rhoDot = 0.0_pReal rhoDot = 0.0_pReal
rhoDot = rhoDotFlux & rhoDot = rhoDotFlux &
@ -1981,7 +1981,21 @@ rhoDot = rhoDotFlux &
+ rhoDotAthermalAnnihilation & + rhoDotAthermalAnnihilation &
+ rhoDotThermalAnnihilation + rhoDotThermalAnnihilation
if ( any(rhoSgl(1:ns,1:4) + rhoDot(1:ns,1:4) * timestep < - constitutive_nonlocal_aTolRho(myInstance)) &
.or. any(rhoDip(1:ns,1:2) + rhoDot(1:ns,9:10) * timestep < - constitutive_nonlocal_aTolRho(myInstance))) then
#ifndef _OPENMP
if (debug_verbosity > 6) then
write(6,'(a,i5,a,i2)') '<< CONST >> evolution rate leads to negative density at el ',el,' ip ',ip
write(6,'(a)') '<< CONST >> enforcing cutback !!!'
endif
#endif
dotState%p = DAMASK_NaN
return
else
dotState%p(1:10*ns) = dotState%p(1:10*ns) + reshape(rhoDot,(/10*ns/)) dotState%p(1:10*ns) = dotState%p(1:10*ns) + reshape(rhoDot,(/10*ns/))
endif
#ifndef _OPENMP #ifndef _OPENMP
if (debug_verbosity > 6 .and. ((debug_e == el .and. debug_i == ip .and. debug_g == g) .or. .not. debug_selectiveDebugger)) then if (debug_verbosity > 6 .and. ((debug_e == el .and. debug_i == ip .and. debug_g == g) .or. .not. debug_selectiveDebugger)) then