correct names
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Martin Diehl
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@ -514,7 +514,7 @@ subroutine plastic_phenopowerlaw_LpAndItsTangent(Lp,dLp_dMstar99,Mstar_v,ipc,ip,
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ip, & !< integration point
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el !< element
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real(pReal), dimension(6), intent(in) :: &
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Mstar_v !< Mandel stress
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Mstar_v !< Mandel stress
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integer(pInt) :: &
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index_myFamily, &
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@ -528,7 +528,7 @@ subroutine plastic_phenopowerlaw_LpAndItsTangent(Lp,dLp_dMstar99,Mstar_v,ipc,ip,
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real(pReal), dimension(3,3) :: &
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S !< Second-Piola Kirchhoff stress
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real(pReal), dimension(3,3,3,3) :: &
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dLp_dMstar !< derivative of Lp with respect to Mstar as 4th order tensor
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dLp_dS !< derivative of Lp with respect to Mstar as 4th order tensor
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type(tParameters) :: prm
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type(tPhenopowerlawState) :: stt
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@ -538,12 +538,11 @@ subroutine plastic_phenopowerlaw_LpAndItsTangent(Lp,dLp_dMstar99,Mstar_v,ipc,ip,
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stt => state(phase_plasticityInstance(material_phase(ipc,ip,el))))
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Lp = 0.0_pReal
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dLp_dMstar = 0.0_pReal
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dLp_dS = 0.0_pReal
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S = math_Mandel6to33(Mstar_v)
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!--------------------------------------------------------------------------------------------------
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! Slip part
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do j = 1_pInt, prm%totalNslip
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slipSystems: do j = 1_pInt, prm%totalNslip
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tau_slip_pos = math_mul33xx33(S,prm%Schmid_slip(1:3,1:3,j))
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tau_slip_neg = tau_slip_pos
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@ -561,36 +560,36 @@ subroutine plastic_phenopowerlaw_LpAndItsTangent(Lp,dLp_dMstar99,Mstar_v,ipc,ip,
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if (dNeq0(tau_slip_pos)) then
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dgdot_dtauslip_pos = gdot_slip_pos*prm%n_slip/tau_slip_pos
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forall (k=1_pInt:3_pInt,l=1_pInt:3_pInt,m=1_pInt:3_pInt,n=1_pInt:3_pInt) &
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dLp_dMstar(k,l,m,n) = dLp_dMstar(k,l,m,n) + dgdot_dtauslip_pos &
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* prm%Schmid_slip(k,l,j)*(prm%Schmid_slip(m,n,j) + sum(prm%nonSchmid_pos(m,n,:,j)))
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dLp_dS(k,l,m,n) = dLp_dS(k,l,m,n) &
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+ dgdot_dtauslip_pos * prm%Schmid_slip(k,l,j) &
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*(prm%Schmid_slip(m,n,j) + sum(prm%nonSchmid_pos(m,n,:,j)))
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endif
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if (dNeq0(tau_slip_neg)) then
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dgdot_dtauslip_neg = gdot_slip_neg*prm%n_slip/tau_slip_neg
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forall (k=1_pInt:3_pInt,l=1_pInt:3_pInt,m=1_pInt:3_pInt,n=1_pInt:3_pInt) &
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dLp_dMstar(k,l,m,n) = dLp_dMstar(k,l,m,n) + dgdot_dtauslip_neg &
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* prm%Schmid_slip(k,l,j)*(prm%Schmid_slip(m,n,j) + sum(prm%nonSchmid_neg(m,n,:,j)))
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dLp_dS(k,l,m,n) = dLp_dS(k,l,m,n) &
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+ dgdot_dtauslip_neg * prm%Schmid_slip(k,l,j) &
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*(prm%Schmid_slip(m,n,j) + sum(prm%nonSchmid_neg(m,n,:,j)))
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endif
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enddo
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enddo slipSystems
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!--------------------------------------------------------------------------------------------------
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! Twinning part
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do j = 1_pInt, prm%totalNtwin
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twinSystems: do j = 1_pInt, prm%totalNtwin
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tau_twin = math_mul33xx33(S,prm%Schmid_twin(1:3,1:3,j))
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gdot_twin = (1.0_pReal-stt%sumF(of))*prm%gdot0_twin*(abs(tau_twin)/stt%s_twin(j,of))**prm%n_twin&
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gdot_twin = (1.0_pReal-stt%sumF(of))*prm%gdot0_twin*(abs(tau_twin)/stt%s_twin(j,of))**prm%n_twin &
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* max(0.0_pReal,sign(1.0_pReal,tau_twin))
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Lp = Lp + gdot_twin*prm%Schmid_twin(1:3,1:3,j)
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if (dNeq0(gdot_twin)) then
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dgdot_dtautwin = gdot_twin*prm%n_twin/tau_twin
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forall (k=1_pInt:3_pInt,l=1_pInt:3_pInt,m=1_pInt:3_pInt,n=1_pInt:3_pInt) &
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dLp_dMstar(k,l,m,n) = dLp_dMstar(k,l,m,n) &
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+ dgdot_dtautwin*prm%Schmid_twin(k,l,j)*prm%Schmid_twin(m,n,j)
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dLp_dS(k,l,m,n) = dLp_dS(k,l,m,n) &
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+ dgdot_dtautwin*prm%Schmid_twin(k,l,j)*prm%Schmid_twin(m,n,j)
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endif
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enddo
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enddo twinSystems
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dLp_dMstar99 = math_Plain3333to99(dLp_dMstar)
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dLp_dMstar99 = math_Plain3333to99(dLp_dS)
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end associate
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end subroutine plastic_phenopowerlaw_LpAndItsTangent
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@ -653,7 +652,7 @@ subroutine plastic_phenopowerlaw_dotState(Mstar6,ipc,ip,el)
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!--------------------------------------------------------------------------------------------------
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! calculate left and right vectors
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ssat_offset = prm%spr*sqrt(stt%sumF(of))
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do j = 1_pInt, prm%totalNslip
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slipSystems: do j = 1_pInt, prm%totalNslip
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left_SlipSlip(j) = 1.0_pReal + prm%H_int(j) ! modified no system-dependent left part
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right_SlipSlip(j) = abs(1.0_pReal-stt%s_slip(j,of) / (prm%tausat_slip(j)+ssat_offset)) **prm%a_slip &
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* sign(1.0_pReal,1.0_pReal-stt%s_slip(j,of) / (prm%tausat_slip(j)+ssat_offset))
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@ -667,13 +666,13 @@ subroutine plastic_phenopowerlaw_dotState(Mstar6,ipc,ip,el)
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gdot_slip(j) = prm%gdot0_slip*0.5_pReal* & !ToDo: save to dotState
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( sign(abs(tau_slip_pos/stt%s_slip(j,of))**prm%n_slip, tau_slip_pos) &
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+ sign(abs(tau_slip_neg/stt%s_slip(j,of))**prm%n_slip, tau_slip_neg))
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enddo
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enddo slipSystems
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do j = 1_pInt, prm%totalNtwin
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twinSystems: do j = 1_pInt, prm%totalNtwin
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tau_twin = math_mul33xx33(S,prm%Schmid_twin(1:3,1:3,j))
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gdot_twin(j) = (1.0_pReal-stt%sumF(of))*prm%gdot0_twin* abs(tau_twin/stt%s_twin(j,of))**prm%n_twin & !ToDo: save to dotState
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* max(0.0_pReal,sign(1.0_pReal,tau_twin))
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enddo
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enddo twinSystems
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!--------------------------------------------------------------------------------------------------
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! calculate the overall hardening based on above
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@ -710,12 +709,6 @@ function plastic_phenopowerlaw_postResults(Mstar6,ipc,ip,el) result(postResults)
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use math, only: &
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math_mul33xx33, &
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math_Mandel6to33
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use lattice, only: &
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lattice_Sslip_v, &
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lattice_Stwin_v, &
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lattice_NslipSystem, &
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lattice_NtwinSystem, &
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lattice_NnonSchmid
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implicit none
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real(pReal), dimension(6), intent(in) :: &
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