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corrected tangent of plastic velocity gradient dLp_dT for slip (twin volume fraction was missing)

This commit is contained in:
Christoph Kords 2014-01-16 09:53:45 +00:00
parent 9223cf52b4
commit a011b0a4a2
1 changed files with 4 additions and 3 deletions
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7
code/constitutive_dislotwin.f90
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@ -1224,8 +1224,9 @@ subroutine constitutive_dislotwin_LpAndItsTangent(Lp,dLp_dTstar,Tstar_v,Temperat
constitutive_dislotwin_v0PerSlipSystem(j,matID) constitutive_dislotwin_v0PerSlipSystem(j,matID)
!* Shear rates due to slip !* Shear rates due to slip
gdot_slip(j) = DotGamma0*exp(-BoltzmannRatio*(1-StressRatio_p)**constitutive_dislotwin_q(matID))*& gdot_slip(j) = (1.0_pReal - sumf) * DotGamma0 &
sign(1.0_pReal,tau_slip(j)) * exp(-BoltzmannRatio*(1-StressRatio_p) ** constitutive_dislotwin_q(matID)) &
* sign(1.0_pReal,tau_slip(j))
!* Derivatives of shear rates !* Derivatives of shear rates
dgdot_dtauslip(j) = & dgdot_dtauslip(j) = &
@ -1234,7 +1235,7 @@ subroutine constitutive_dislotwin_LpAndItsTangent(Lp,dLp_dTstar,Tstar_v,Temperat
StressRatio_pminus1*(1-StressRatio_p)**(constitutive_dislotwin_q(matID)-1.0_pReal) StressRatio_pminus1*(1-StressRatio_p)**(constitutive_dislotwin_q(matID)-1.0_pReal)
!* Plastic velocity gradient for dislocation glide !* Plastic velocity gradient for dislocation glide
Lp = Lp + (1.0_pReal - sumf)*gdot_slip(j)*lattice_Sslip(:,:,1,index_myFamily+i,structID) Lp = Lp + gdot_slip(j)*lattice_Sslip(:,:,1,index_myFamily+i,structID)
!* Calculation of the tangent of Lp !* Calculation of the tangent of Lp
forall (k=1_pInt:3_pInt,l=1_pInt:3_pInt,m=1_pInt:3_pInt,n=1_pInt:3_pInt) & forall (k=1_pInt:3_pInt,l=1_pInt:3_pInt,m=1_pInt:3_pInt,n=1_pInt:3_pInt) &