bug fixes and polishing
bugs: wrong bracket in calculation of threshold_stress_twin
3**b_twin instead of 3*b_twin in calculation of threshold_stress_twin
ph instead of instance in calculation of mfp_twin
This commit is contained in:
Martin Diehl
parent
84c29bb255
commit
fc0499a9bb
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@ -347,6 +347,7 @@ subroutine plastic_dislotwin_init(fileUnit)
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prm%twinsize= math_expand(prm%twinsize,prm%Ntwin)
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prm%r = config_phase(p)%getFloats('r_twin')
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prm%r = math_expand(prm%r,prm%Ntwin)
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prm%L0_twin = config_phase(p)%getFloat('l0_twin')
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@ -1042,8 +1043,7 @@ subroutine plastic_dislotwin_microstructure(temperature,ipc,ip,el)
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real(pReal), dimension(:), allocatable :: &
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x0
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real(pReal), dimension(plasticState(material_phase(ipc,ip,el))%Ntwin) :: fOverStacksize
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real(pReal), dimension(plasticState(material_phase(ipc,ip,el))%Ntrans) :: &
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ftransOverLamellarSize
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real(pReal), dimension(plasticState(material_phase(ipc,ip,el))%Ntrans) :: ftransOverLamellarSize
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type(tParameters), pointer :: prm
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@ -1061,13 +1061,11 @@ subroutine plastic_dislotwin_microstructure(temperature,ipc,ip,el)
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sum(state(instance)%strainTransFraction(1_pInt:prm%totalNtrans,of))
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!* Stacking fault energy
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sfe = param(instance)%SFE_0K + &
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param(instance)%dSFE_dT * Temperature
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sfe = param(instance)%SFE_0K + param(instance)%dSFE_dT * Temperature
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!* rescaled twin volume fraction for topology
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fOverStacksize = &
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state(instance)%twinFraction(1_pInt:prm%totalNtwin,of)/prm%twinsize
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fOverStacksize = state(instance)%twinFraction(1_pInt:prm%totalNtwin,of)/prm%twinsize
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!* rescaled trans volume fraction for topology
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ftransOverLamellarSize = &
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@ -1111,77 +1109,62 @@ subroutine plastic_dislotwin_microstructure(temperature,ipc,ip,el)
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do s = 1_pInt,prm%totalNslip
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if ((prm%totalNtwin > 0_pInt) .or. (prm%totalNtrans > 0_pInt)) then
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state(instance)%mfp_slip(s,of) = &
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param(instance)%GrainSize/(1.0_pReal+param(instance)%GrainSize*&
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(state(instance)%invLambdaSlip(s,of) + &
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state(instance)%invLambdaSlipTwin(s,of) + &
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state(instance)%invLambdaSlipTrans(s,of)))
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prm%GrainSize/(1.0_pReal+prm%GrainSize*&
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(state(instance)%invLambdaSlip(s,of) + state(instance)%invLambdaSlipTwin(s,of) + state(instance)%invLambdaSlipTrans(s,of)))
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else
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state(instance)%mfp_slip(s,of) = &
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param(instance)%GrainSize/&
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(1.0_pReal+param(instance)%GrainSize*(state(instance)%invLambdaSlip(s,of))) !!!!!! correct?
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prm%GrainSize/&
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(1.0_pReal+prm%GrainSize*(state(instance)%invLambdaSlip(s,of))) !!!!!! correct?
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endif
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enddo
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!* mean free path between 2 obstacles seen by a growing twin
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state(instance)%mfp_twin(:,of) = &
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param(instance)%Cmfptwin*param(instance)%GrainSize/&
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(1.0_pReal+param(instance)%GrainSize*state(ph)%invLambdaTwin(:,of))
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state(instance)%mfp_twin(:,of) = prm%Cmfptwin*prm%GrainSize/&
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(1.0_pReal+prm%GrainSize*state(instance)%invLambdaTwin(:,of))
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!* mean free path between 2 obstacles seen by a growing martensite
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state(instance)%mfp_trans(:,of) = &
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param(instance)%Cmfptrans*param(instance)%GrainSize/&
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(1.0_pReal+param(instance)%GrainSize*state(instance)%invLambdaTrans(:,of))
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state(instance)%mfp_trans(:,of) = prm%Cmfptrans*prm%GrainSize/&
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(1.0_pReal+prm%GrainSize*state(instance)%invLambdaTrans(:,of))
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!* threshold stress for dislocation motion
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forall (s = 1_pInt:prm%totalNslip) &
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state(instance)%threshold_stress_slip(s,of) = &
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lattice_mu(ph)*prm%burgers_slip(s)*&
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sqrt(dot_product((state(instance)%rhoEdge(1_pInt:prm%totalNslip,of)+state(instance)%rhoEdgeDip(1_pInt:prm%totalNslip,of)),&
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sqrt(dot_product(state(instance)%rhoEdge(1_pInt:prm%totalNslip,of)+state(instance)%rhoEdgeDip(1_pInt:prm%totalNslip,of),&
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prm%interaction_SlipSlip(s,1:prm%totalNslip)))
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!* threshold stress for growing twin
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state(instance)%threshold_stress_twin(:,of) = &
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param(instance)%Cthresholdtwin* &
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(sfe/(3.0_pReal**prm%burgers_twin &
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prm%Cthresholdtwin* &
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(sfe/(3.0_pReal*prm%burgers_twin) &
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+ 3.0_pReal*prm%burgers_twin*lattice_mu(ph)/&
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(param(instance)%L0_twin*prm%burgers_slip)) &
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)
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(param(instance)%L0_twin*prm%burgers_slip))
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!* threshold stress for growing martensite
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state(instance)%threshold_stress_trans(:,of) = &
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param(instance)%Cthresholdtrans* &
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prm%Cthresholdtrans* &
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(sfe/(3.0_pReal*prm%burgers_trans) &
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+ 3.0_pReal*prm%burgers_trans*lattice_mu(ph)/&
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(param(instance)%L0_trans*prm%burgers_slip)&
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+ param(instance)%transStackHeight*param(instance)%deltaG/ &
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(prm%L0_trans*prm%burgers_slip)&
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+ prm%transStackHeight*prm%deltaG/ &
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(3.0_pReal*prm%burgers_trans) &
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)
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!* final twin volume after growth
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state(instance)%twinVolume(:,of) = &
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(pi/4.0_pReal)*prm%twinsize*&
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state(instance)%mfp_twin(:,of)**2.0_pReal
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state(instance)%twinVolume(:,of) = (PI/4.0_pReal)*prm%twinsize*state(instance)%mfp_twin(:,of)**2.0_pReal
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!* final martensite volume after growth
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state(instance)%martensiteVolume(:,of) = &
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(pi/4.0_pReal)*prm%lamellarsizePerTransSystem*&
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state(instance)%mfp_trans(:,of)**(2.0_pReal)
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state(instance)%martensiteVolume(:,of) = (PI/4.0_pReal)*prm%lamellarsizePerTransSystem*state(instance)%mfp_trans(:,of)**2.0_pReal
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!* equilibrium separation of partial dislocations (twin)
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x0 = lattice_mu(ph)*prm%burgers_twin**(2.0_pReal)/&
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(sfe*8.0_pReal*pi)*(2.0_pReal+lattice_nu(ph))/(1.0_pReal-lattice_nu(ph))
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tau_r_twin(:,instance)= &
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lattice_mu(ph)*prm%burgers_twin/(2.0_pReal*pi)*&
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(1/(x0+param(instance)%xc_twin)+cos(pi/3.0_pReal)/x0)
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!* equilibrium separation of partial dislocations (trans)
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x0 = lattice_mu(ph)*prm%burgers_twin**2.0_pReal/(sfe*8.0_pReal*PI)*(2.0_pReal+lattice_nu(ph))/(1.0_pReal-lattice_nu(ph))
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tau_r_twin(:,instance)= lattice_mu(ph)*prm%burgers_twin/(2.0_pReal*PI)*&
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(1/(x0+prm%xc_twin)+cos(pi/3.0_pReal)/x0)
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x0 = lattice_mu(ph)*prm%burgers_trans**(2.0_pReal)/&
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(sfe*8.0_pReal*pi)*(2.0_pReal+lattice_nu(ph))/(1.0_pReal-lattice_nu(ph))
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tau_r_trans(:,instance)= &
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lattice_mu(ph)*prm%burgers_trans/(2.0_pReal*pi)*&
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(1/(x0+param(instance)%xc_trans)+cos(pi/3.0_pReal)/x0)
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!* equilibrium separation of partial dislocations (trans)
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x0 = lattice_mu(ph)*prm%burgers_trans**2.0_pReal/(sfe*8.0_pReal*PI)*(2.0_pReal+lattice_nu(ph))/(1.0_pReal-lattice_nu(ph))
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tau_r_trans(:,instance)= lattice_mu(ph)*prm%burgers_trans/(2.0_pReal*PI)*&
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(1/(x0+prm%xc_trans)+cos(pi/3.0_pReal)/x0)
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end subroutine plastic_dislotwin_microstructure
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@ -1296,7 +1279,7 @@ prm => param(instance)
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if((abs(tau_slip(j))-state(instance)%threshold_stress_slip(j,of)) > tol_math_check) then
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!* Stress ratios
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stressRatio =((abs(tau_slip(j))- state(instance)%threshold_stress_slip(j,of))/&
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(param(instance)%SolidSolutionStrength+prm%tau_peierlsPerSlipFamily(f)))
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(prm%SolidSolutionStrength+prm%tau_peierlsPerSlipFamily(f)))
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StressRatio_p = stressRatio** prm%p(f)
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StressRatio_pminus1 = stressRatio**(prm%p(f)-1.0_pReal)
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!* Boltzmann ratio
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@ -1315,7 +1298,7 @@ prm => param(instance)
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dgdot_dtauslip(j) = &
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abs(gdot_slip(j))*BoltzmannRatio*prm%p(f)&
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*prm%q(f)/&
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(param(instance)%SolidSolutionStrength+prm%tau_peierlsPerSlipFamily(f))*&
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(prm%SolidSolutionStrength+prm%tau_peierlsPerSlipFamily(f))*&
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StressRatio_pminus1*(1-StressRatio_p)**(prm%q(f)-1.0_pReal)
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endif
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@ -1434,7 +1417,7 @@ prm => param(instance)
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gdot_twin(j) = &
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(1.0_pReal-sumf-sumftr)*lattice_shearTwin(index_myFamily+i,ph)*&
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state(instance)%twinVolume(j,of)*Ndot0_twin*exp(-StressRatio_r)
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dgdot_dtautwin(j) = ((gdot_twin(j)*prm%r(f))/tau_twin(j))*StressRatio_r
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dgdot_dtautwin(j) = ((gdot_twin(j)*prm%r(j))/tau_twin(j))*StressRatio_r
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endif
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!* Plastic velocity gradient for mechanical twinning
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@ -1677,7 +1660,7 @@ subroutine plastic_dislotwin_dotState(Tstar_v,Temperature,ipc,ip,el)
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!* Stress ratios
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if (tau_twin(j) > tol_math_check) then
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StressRatio_r = (state(instance)%threshold_stress_twin(j,of)/&
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tau_twin(j))**prm%r(f)
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tau_twin(j))**prm%r(j)
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!* Shear rates and their derivatives due to twin
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select case(lattice_structure(ph))
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case (LATTICE_fcc_ID)
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@ -1746,7 +1729,8 @@ subroutine plastic_dislotwin_dotState(Tstar_v,Temperature,ipc,ip,el)
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enddo
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enddo
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if (el==12) write(6,*) Tstar_v
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if (el==12) write(6,*) plasticState(ph)%dotState(:,of),ph,of,el
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end subroutine plastic_dislotwin_dotState
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@ -1998,7 +1982,7 @@ function plastic_dislotwin_postResults(Tstar_v,Temperature,ipc,ip,el)
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Ndot0_twin=prm%Ndot0_twin(j)
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end select
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StressRatio_r = (state(instance)%threshold_stress_twin(j,of)/tau) &
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**prm%r(f)
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**prm%r(j)
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plastic_dislotwin_postResults(c+j) = &
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(param(instance)%MaxTwinFraction-sumf)*lattice_shearTwin(index_myFamily+i,ph)*&
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state(instance)%twinVolume(j,of)*Ndot0_twin*exp(-StressRatio_r)
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