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DAMASK_EICMD
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- make sure that formerly blocked density is not able to move to neighbor until it is remobilized 

- added some explicit indices instead of ":"
This commit is contained in:
Christoph Kords 2013-04-03 16:29:48 +00:00
parent 6d3f05b387
commit 3c25723139
1 changed files with 13 additions and 10 deletions
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17
code/constitutive_nonlocal.f90
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@ -1691,7 +1691,7 @@ integer(pInt) myInstance, & ! curren
real(pReal), dimension(3,3,3,3) :: dLp_dTstar3333 ! derivative of Lp with respect to Tstar (3x3x3x3 matrix)
real(pReal), dimension(3,3,2) :: nonSchmid_tensor
real(pReal), dimension(constitutive_nonlocal_totalNslip(phase_plasticityInstance(material_phase(g,ip,el))),8) :: &
rhoSgl ! single dislocation densities (including used)
rhoSgl ! single dislocation densities (including blocked)
real(pReal), dimension(constitutive_nonlocal_totalNslip(phase_plasticityInstance(material_phase(g,ip,el))),4) :: &
v, & ! velocity
tau, & ! resolved shear stress including non Schmid and backstress terms
@ -1728,21 +1728,21 @@ where (abs(rhoSgl) * mesh_ipVolume(ip,el) ** 0.667_pReal < constitutive_nonlocal
!*** get effective resolved shear stress
do s = 1_pInt,ns
tau(s,1:4) = math_mul6x6(Tstar_v, lattice_Sslip_v(:,1,constitutive_nonlocal_slipSystemLattice(s,myInstance),myStructure)) &
tau(s,1:4) = math_mul6x6(Tstar_v, lattice_Sslip_v(1:6,1,constitutive_nonlocal_slipSystemLattice(s,myInstance),myStructure)) &
+ tauBack(s)
!*** adding non schmid contributions to ONLY screw components if present (i.e. if NnonSchmid(myStructure) > 0)
nonSchmid_tensor(1:3,1:3,1) = &
math_Mandel6to33(lattice_Sslip_v(:,1,constitutive_nonlocal_slipSystemLattice(s,myInstance),myStructure))
math_Mandel6to33(lattice_Sslip_v(1:6,1,constitutive_nonlocal_slipSystemLattice(s,myInstance),myStructure))
nonSchmid_tensor(1:3,1:3,2) = nonSchmid_tensor(1:3,1:3,1)
do k = 1_pInt, NnonSchmid(myStructure)
tau(s,3) = tau(s,3) + constitutive_nonlocal_nonSchmidCoeff(k,myInstance)* &
math_mul6x6(Tstar_v, lattice_Sslip_v(:,2*k,constitutive_nonlocal_slipSystemLattice(s,myInstance),myStructure))
math_mul6x6(Tstar_v, lattice_Sslip_v(1:6,2*k,constitutive_nonlocal_slipSystemLattice(s,myInstance),myStructure))
tau(s,4) = tau(s,4) + constitutive_nonlocal_nonSchmidCoeff(k,myInstance)* &
math_mul6x6(Tstar_v, lattice_Sslip_v(:,2*k+1,constitutive_nonlocal_slipSystemLattice(s,myInstance),myStructure))
math_mul6x6(Tstar_v, lattice_Sslip_v(1:6,2*k+1,constitutive_nonlocal_slipSystemLattice(s,myInstance),myStructure))
nonSchmid_tensor(1:3,1:3,1) = nonSchmid_tensor(1:3,1:3,1) + constitutive_nonlocal_nonSchmidCoeff(k,myInstance)*&
math_Mandel6to33(lattice_Sslip_v(:,2*k,constitutive_nonlocal_slipSystemLattice(s,myInstance),myStructure))
math_Mandel6to33(lattice_Sslip_v(1:6,2*k,constitutive_nonlocal_slipSystemLattice(s,myInstance),myStructure))
nonSchmid_tensor(1:3,1:3,2) = nonSchmid_tensor(1:3,1:3,2) + constitutive_nonlocal_nonSchmidCoeff(k,myInstance)*&
math_Mandel6to33(lattice_Sslip_v(:,2*k+1,constitutive_nonlocal_slipSystemLattice(s,myInstance),myStructure))
math_Mandel6to33(lattice_Sslip_v(1:6,2*k+1,constitutive_nonlocal_slipSystemLattice(s,myInstance),myStructure))
enddo
enddo
@ -2394,6 +2394,7 @@ if (.not. phase_localPlasticity(material_phase(g,ip,el))) then
if (neighboring_v(s,t) * math_mul3x3(m(1:3,s,t), normal_neighbor2me) > 0.0_pReal & ! flux from my neighbor to me == entering flux for me
.and. v(s,t) * neighboring_v(s,t) >= 0.0_pReal ) then ! ... only if no sign change in flux density
do deads = 0_pInt,4_pInt,4_pInt
if (deads == 4_pInt .and. neighboring_rhoSgl(s,t+4_pInt) * neighboring_v(s,t) < 0.0_pReal) exit ! make sure that formerly blocked density due to stress sign change is first remobilized, otherwise we directly enter here without having produced any strain at neighbor
lineLength = abs(neighboring_rhoSgl(s,t+deads)) * neighboring_v(s,t) &
* math_mul3x3(m(1:3,s,t), normal_neighbor2me) * area ! positive line length that wants to enter through this interface
where (constitutive_nonlocal_compatibility(c,1_pInt:ns,s,n,ip,el) > 0.0_pReal) & ! positive compatibility...
@ -2461,9 +2462,11 @@ if (.not. phase_localPlasticity(material_phase(g,ip,el))) then
rhoDotFlux(s,t) = rhoDotFlux(s,t) - lineLength / mesh_ipVolume(ip,el) ! subtract dislocation flux from current type
rhoDotFlux(s,t+4_pInt) = rhoDotFlux(s,t+4_pInt) + lineLength / mesh_ipVolume(ip,el) * (1.0_pReal - transmissivity) &
* sign(1.0_pReal, vMe(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
if (rhoSglMe(s,t+4_pInt) * vMe(s,t) > 0.0_pReal) then ! make sure that formerly blocked density due to stress sign change is first remobilized, otherwise we directly jump to neighbor without having produced any strain here
lineLength = rhoSglMe(s,t+4_pInt) * vMe(s,t) * math_mul3x3(m(1:3,s,t), normal_me2neighbor) * area ! positive line length of deads that wants to leave through this interface
rhoDotFlux(s,t+4_pInt) = rhoDotFlux(s,t+4_pInt) - lineLength / mesh_ipVolume(ip,el) * transmissivity ! dead dislocations leaving through this interface
endif
endif
enddo
enddo
endif