diff --git a/src/constitutive_plastic_nonlocal.f90 b/src/constitutive_plastic_nonlocal.f90 index 358fd964d..b7bf340fb 100644 --- a/src/constitutive_plastic_nonlocal.f90 +++ b/src/constitutive_plastic_nonlocal.f90 @@ -227,6 +227,7 @@ module subroutine plastic_nonlocal_init allocate(param(maxNinstances)) allocate(state(maxNinstances)) + allocate(state0(maxNinstances)) allocate(dotState(maxNinstances)) allocate(deltaState(maxNinstances)) allocate(microstructure(maxNinstances)) @@ -1373,8 +1374,8 @@ module subroutine plastic_nonlocal_dotState(Mp, Fe, Fp, Temperature, & my_rhoSgl !< single dislocation densities of central ip (positive/negative screw and edge without dipoles) real(pReal), dimension(totalNslip(phase_plasticityInstance(material_phaseAt(1,el))),4) :: & v, & !< current dislocation glide velocity - my_v, & !< dislocation glide velocity of central ip - neighbor_v, & !< dislocation glide velocity of enighboring ip + v0, & + neighbor_v0, & !< dislocation glide velocity of enighboring ip gdot !< shear rates real(pReal), dimension(totalNslip(phase_plasticityInstance(material_phaseAt(1,el)))) :: & tau, & !< current resolved shear stress @@ -1491,6 +1492,9 @@ module subroutine plastic_nonlocal_dotState(Mp, Fe, Fp, Temperature, & * sqrt(stt%rho_forest(:,o)) / prm%lambda0 / prm%burgers(1:ns), 2, 4) endif isBCC + forall (s = 1:ns, t = 1:4) + v0(s,t) = plasticState(p)%state0(iV(s,t,instance),o) + endforall !**************************************************************************** !*** calculate dislocation fluxes (only for nonlocal plasticity) @@ -1499,14 +1503,14 @@ module subroutine plastic_nonlocal_dotState(Mp, Fe, Fp, Temperature, & !*** check CFL (Courant-Friedrichs-Lewy) condition for flux if (any( abs(gdot) > 0.0_pReal & ! any active slip system ... - .and. prm%CFLfactor * abs(v) * timestep & + .and. prm%CFLfactor * abs(v0) * timestep & > IPvolume(ip,el) / maxval(IParea(:,ip,el)))) then ! ...with velocity above critical value (we use the reference volume and area for simplicity here) #ifdef DEBUG if (iand(debug_level(debug_constitutive),debug_levelExtensive) /= 0) then write(6,'(a,i5,a,i2)') '<< CONST >> CFL condition not fullfilled at el ',el,' ip ',ip write(6,'(a,e10.3,a,e10.3)') '<< CONST >> velocity is at ', & - maxval(abs(v), abs(gdot) > 0.0_pReal & - .and. prm%CFLfactor * abs(v) * timestep & + maxval(abs(v0), abs(gdot) > 0.0_pReal & + .and. prm%CFLfactor * abs(v0) * timestep & > IPvolume(ip,el) / maxval(IParea(:,ip,el))), & ' at a timestep of ',timestep write(6,'(a)') '<< CONST >> enforcing cutback !!!' @@ -1561,7 +1565,7 @@ module subroutine plastic_nonlocal_dotState(Mp, Fe, Fp, Temperature, & !* compatibility considerEnteringFlux = .false. - neighbor_v = 0.0_pReal ! needed for check of sign change in flux density below + neighbor_v0 = 0.0_pReal ! needed for check of sign change in flux density below neighbor_rhoSgl = 0.0_pReal if (neighbor_n > 0) then if (phase_plasticity(material_phaseAt(1,neighbor_el)) == PLASTICITY_NONLOCAL_ID & @@ -1571,7 +1575,7 @@ module subroutine plastic_nonlocal_dotState(Mp, Fe, Fp, Temperature, & enteringFlux: if (considerEnteringFlux) then forall (s = 1:ns, t = 1:4) - neighbor_v(s,t) = plasticState(np)%state(iV (s,t,neighbor_instance),no) + neighbor_v0(s,t) = plasticState(np)%state0(iV (s,t,neighbor_instance),no) neighbor_rhoSgl(s,t) = max(plasticState(np)%state(iRhoU(s,t,neighbor_instance),no), & 0.0_pReal) endforall @@ -1589,9 +1593,9 @@ module subroutine plastic_nonlocal_dotState(Mp, Fe, Fp, Temperature, & do t = 1,4 c = (t + 1) / 2 topp = t + mod(t,2) - mod(t+1,2) - if (neighbor_v(s,t) * math_inner(m(1:3,s,t), normal_neighbor2me) > 0.0_pReal & ! flux from my neighbor to me == entering flux for me - .and. v(s,t) * neighbor_v(s,t) >= 0.0_pReal ) then ! ... only if no sign change in flux density - lineLength = neighbor_rhoSgl(s,t) * neighbor_v(s,t) & + if (neighbor_v0(s,t) * math_inner(m(1:3,s,t), normal_neighbor2me) > 0.0_pReal & ! flux from my neighbor to me == entering flux for me + .and. v0(s,t) * neighbor_v0(s,t) >= 0.0_pReal ) then ! ... only if no sign change in flux density + lineLength = neighbor_rhoSgl(s,t) * neighbor_v0(s,t) & * math_inner(m(1:3,s,t), normal_neighbor2me) * area ! positive line length that wants to enter through this interface where (compatibility(c,1:ns,s,n,ip,el) > 0.0_pReal) & ! positive compatibility... rhoDotFlux(1:ns,t) = rhoDotFlux(1:ns,t) & @@ -1623,7 +1627,6 @@ module subroutine plastic_nonlocal_dotState(Mp, Fe, Fp, Temperature, & leavingFlux: if (considerLeavingFlux) then my_rhoSgl = rhoSgl - my_v = v normal_me2neighbor_defConf = math_det33(Favg) & * matmul(math_inv33(transpose(Favg)), & @@ -1635,18 +1638,18 @@ module subroutine plastic_nonlocal_dotState(Mp, Fe, Fp, Temperature, & do s = 1,ns do t = 1,4 c = (t + 1) / 2 - if (my_v(s,t) * math_inner(m(1:3,s,t), normal_me2neighbor) > 0.0_pReal ) then ! flux from me to my neighbor == leaving flux for me (might also be a pure flux from my mobile density to dead density if interface not at all transmissive) - if (my_v(s,t) * neighbor_v(s,t) >= 0.0_pReal) then ! no sign change in flux density + if (v0(s,t) * math_inner(m(1:3,s,t), normal_me2neighbor) > 0.0_pReal ) then ! flux from me to my neighbor == leaving flux for me (might also be a pure flux from my mobile density to dead density if interface not at all transmissive) + if (v0(s,t) * neighbor_v0(s,t) >= 0.0_pReal) then ! no sign change in flux density transmissivity = sum(compatibility(c,1:ns,s,n,ip,el)**2.0_pReal) ! overall transmissivity from this slip system to my neighbor else ! sign change in flux density means sign change in stress which does not allow for dislocations to arive at the neighbor transmissivity = 0.0_pReal endif - lineLength = my_rhoSgl(s,t) * my_v(s,t) & + lineLength = my_rhoSgl(s,t) * v0(s,t) & * math_inner(m(1:3,s,t), normal_me2neighbor) * area ! positive line length of mobiles that wants to leave through this interface rhoDotFlux(s,t) = rhoDotFlux(s,t) - lineLength / IPvolume(ip,el) ! subtract dislocation flux from current type rhoDotFlux(s,t+4) = rhoDotFlux(s,t+4) & + lineLength / IPvolume(ip,el) * (1.0_pReal - transmissivity) & - * sign(1.0_pReal, my_v(s,t)) ! dislocation flux that is not able to leave through interface (because of low transmissivity) will remain as immobile single density at the material point + * sign(1.0_pReal, v0(s,t)) ! dislocation flux that is not able to leave through interface (because of low transmissivity) will remain as immobile single density at the material point endif enddo enddo