nonlocal stiffness calculation:
rather perturb all components at once (and optionally decrease the frequency of the Jacobian update with the iJaco parameter) than perturbing only a single component per cycle
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Christoph Kords
parent
1c72439350
commit
6d874e2c1f
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@ -925,40 +925,9 @@ subroutine crystallite_stressAndItsTangent(updateJaco)
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elseif (any(.not. crystallite_localConstitution)) then ! if any nonlocal grain present, we have to do a full loop over all grains after each perturbance
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do e = FEsolving_execElem(1),FEsolving_execElem(2)
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myNgrains = homogenization_Ngrains(mesh_element(3,e))
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do i = FEsolving_execIP(1,e),FEsolving_execIP(2,e)
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do g = 1,myNgrains
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selectiveDebugger = (e == debug_e .and. i == debug_i .and. g == debug_g)
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mask = .true.
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do comp = 1,9
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kl(:,comp,g,i,e) = maxloc(abs(crystallite_subF(:,:,g,i,e)-crystallite_F0(:,:,g,i,e)), mask) ! map from component to array indices for F (sorted in descending order of abs(deltaF))
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mask(kl(1,comp,g,i,e),kl(2,comp,g,i,e)) = .false.
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enddo
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k = kl(1,mod(cycleCounter/iJacoStiffness,9)+1,g,i,e) ! perturb components in the descending order of change in F (-> component with biggest change in F is perturbed in first cycle, component with second biggest change in next cycle, ...)
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l = kl(2,mod(cycleCounter/iJacoStiffness,9)+1,g,i,e)
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if (verboseDebugger .and. selectiveDebugger) then
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!$OMP CRITICAL (write2out)
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write (6,*) 'perturb component ',k,l
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!$OMPEND CRITICAL (write2out)
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endif
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crystallite_subF(k,l,g,i,e) = crystallite_subF(k,l,g,i,e) + pert_Fg ! perturb single component
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enddo; enddo; enddo
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!$OMP PARALLEL DO
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do e = FEsolving_execElem(1),FEsolving_execElem(2)
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myNgrains = homogenization_Ngrains(mesh_element(3,e))
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do i = FEsolving_execIP(1,e),FEsolving_execIP(2,e)
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do g = 1,myNgrains
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if (crystallite_todo(g,i,e)) then
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crystallite_stateConverged(g,i,e) = crystallite_updateState(g,i,e) ! preguess for state
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crystallite_temperatureConverged(g,i,e) = crystallite_updateTemperature(g,i,e)
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if ( .not. crystallite_localConstitution(g,i,e) &
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.and. .not. crystallite_todo(g,i,e)) & ! if broken non-local...
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crystallite_todo = crystallite_todo .and. crystallite_localConstitution ! ...all non-locals skipped
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endif
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enddo; enddo; enddo
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!$OMPEND PARALLEL DO
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do k = 1,3
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do l = 1,3
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crystallite_subF(k,l,:,:,:) = crystallite_subF(k,l,:,:,:) + pert_Fg ! perturb single component
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NiterationState = 0_pInt
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crystallite_todo = .true.
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@ -970,6 +939,7 @@ subroutine crystallite_stressAndItsTangent(updateJaco)
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myNgrains = homogenization_Ngrains(mesh_element(3,e))
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do i = FEsolving_execIP(1,e),FEsolving_execIP(2,e)
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do g = 1,myNgrains
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selectiveDebugger = (e == debug_e .and. i == debug_i .and. g == debug_g)
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if (crystallite_todo(g,i,e)) then
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crystallite_todo(g,i,e) = crystallite_integrateStress(g,i,e) ! stress integration
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if ( .not. crystallite_localConstitution(g,i,e) &
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@ -994,6 +964,7 @@ subroutine crystallite_stressAndItsTangent(updateJaco)
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myNgrains = homogenization_Ngrains(mesh_element(3,e))
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do i = FEsolving_execIP(1,e),FEsolving_execIP(2,e)
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do g = 1,myNgrains
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selectiveDebugger = (e == debug_e .and. i == debug_i .and. g == debug_g)
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if (crystallite_todo(g,i,e)) then
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call constitutive_collectDotState(crystallite_Tstar_v(:,g,i,e), crystallite_subTstar0_v(:,g,i,e), &
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crystallite_Fe, crystallite_Fp, crystallite_Temperature(g,i,e), &
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@ -1005,8 +976,10 @@ subroutine crystallite_stressAndItsTangent(updateJaco)
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dot_prod22 = dot_product(delta_dotState2, delta_dotState2)
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if ( dot_prod22 > 0.0_pReal &
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.and. ( dot_prod12 < 0.0_pReal &
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.or. dot_product(constitutive_dotState(g,i,e)%p, constitutive_previousDotState(g,i,e)%p) < 0.0_pReal))&
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crystallite_statedamper(g,i,e) = 0.75_pReal + 0.25_pReal * tanh(2.0_pReal + 4.0_pReal * dot_prod12 / dot_prod22)
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.or. dot_product(constitutive_dotState(g,i,e)%p, &
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constitutive_previousDotState(g,i,e)%p) < 0.0_pReal) ) &
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crystallite_statedamper(g,i,e) = 0.75_pReal &
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+ 0.25_pReal * tanh(2.0_pReal + 4.0_pReal * dot_prod12 / dot_prod22)
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endif
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enddo; enddo; enddo
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!$OMPEND PARALLEL DO
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@ -1016,6 +989,7 @@ subroutine crystallite_stressAndItsTangent(updateJaco)
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myNgrains = homogenization_Ngrains(mesh_element(3,e))
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do i = FEsolving_execIP(1,e),FEsolving_execIP(2,e)
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do g = 1,myNgrains
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selectiveDebugger = (e == debug_e .and. i == debug_i .and. g == debug_g)
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if (crystallite_todo(g,i,e)) then
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crystallite_stateConverged(g,i,e) = crystallite_updateState(g,i,e) ! update state
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crystallite_temperatureConverged(g,i,e) = crystallite_updateTemperature(g,i,e) ! update temperature
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@ -1040,8 +1014,6 @@ subroutine crystallite_stressAndItsTangent(updateJaco)
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do i = FEsolving_execIP(1,e),FEsolving_execIP(2,e)
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do g = 1,myNgrains
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if (crystallite_converged(g,i,e)) then ! if stiffness calculation converged...
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k = kl(1,mod(cycleCounter/iJacoStiffness,9)+1,g,i,e)
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l = kl(2,mod(cycleCounter/iJacoStiffness,9)+1,g,i,e)
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crystallite_dPdF(:,:,k,l,g,i,e) = (crystallite_P(:,:,g,i,e) - storedP(:,:,g,i,e))/pert_Fg ! ... use tangent dP_ij/dFg_kl
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elseif (.not. storedConvergenceFlag(g,i,e)) then ! if crystallite didnÕt converge before...
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crystallite_dPdF(:,:,:,:,g,i,e) = crystallite_fallbackdPdF(:,:,:,:,g,i,e) ! ... use (elastic) fallback
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@ -1072,6 +1044,8 @@ subroutine crystallite_stressAndItsTangent(updateJaco)
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crystallite_converged = storedConvergenceFlag
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enddo;enddo ! k,l loop
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endif
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endif ! jacobian calculation
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