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Added subroutine that reads materials and textures file

This commit is contained in:
Luc Hantcherli 2007-03-21 21:10:22 +00:00
parent 396a32024a
commit 0d10b9ea5f
1 changed files with 204 additions and 213 deletions
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417
trunk/constitutive.f90
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@ -13,35 +13,45 @@ MODULE constitutive
!*** Include other modules ***
use prec, only: pReal,pInt
! NB: 'only'-commend may not be needed
implicit none
!*****************************
!* Material parameters *
!* Module parameters *
!*****************************
!* Character *
character*80, allocatble :: TCfile(:),ODFfile(:)
! NB: orientation files TCfile(number of material)
character(len=80), allocatable :: constitutive_ODFfile(:)
! NB: ODFfile(number of texture)
character(len=80), allocatable :: constitutive_symmetry(:)
! NB: symmetry(number of texture)
!* Integer *
integer(pInt) constitutive_Nmats
! NB: Number of materials (read in material file)
integer(pInt) constitutive_Ntexts
! NB: Number of textures (read in material file)
integer(pInt), allocatable :: constitutive_crystal_structure(:)
! NB: crystal_structure(number of material)=1-3
integer(pInt) constitutive_Nslip(3)
! NB: Number of systems for each crystal structure (3)
! NB: not forget a MaxSlip variable that give the effective number
! of slip system I have
integer(pInt), allocatable :: constitutive_Nslip(:)
! NB: Number of systems for each material
integer(pInt) constitutive_Nslip_max(3)
! NB: Number of defines slip systems
integer(pInt), allocatable :: constitutive_Ngrains(:)
! NB: Ngrains(number of texture)
!* Real *
real(pReal), allocatable :: constitutive_C11(:)
real(pReal), allocatable :: constitutive_C12(:)
real(pReal), allocatable :: constitutive_C13(:)
real(pReal), allocatable :: constitutive_C33(:)
real(pReal), allocatable :: constitutive_C44(:)
real(pReal), allocatable :: constitutive_Cslip_66(:,:,:)
! NB: Cslip_66(1:6,1:6,number of materials)
real(pReal), allocatable :: constitutive_s0_slip(:)
real(pReal), allocatable :: constitutive_gdot0_slip(:)
real(pReal), allocatable :: constitutive_n_slip(:)
real(pReal), allocatable :: constitutive_h0(:)
real(pReal), allocatable :: constitutive_w0(:)
real(pReal), allocatable :: constitutive_s_sat(:)
real(pReal), allocatable :: constitutive_w0(:)
! NB: Parameters(number of materials)
real(pReal), allocatable :: constitutive_hardening_matrix(:,:,:)
! NB: hardening_matrix(48,48,3)
@ -53,7 +63,7 @@ real(pReal) constitutive_Sslip(3,3,48,3),constitutive_Sslip_v(6,48,3)
! NB: Schmid matrices and corresponding Schmid vectors
!*** Slip systems for FCC structures (1) ***
constitutive_Nslip(1)=12_pInt
data constitutive_Nslip_max(1)/12/
!* System {111}<110> Sort according Eisenlohr&Hantcherli
data constitutive_sd(:, 1,1)/ 0, 1,-1/ ; data constitutive_sn(:, 1,1)/ 1, 1, 1/
data constitutive_sd(:, 2,1)/-1, 0, 1/ ; data constitutive_sn(:, 2,1)/ 1, 1, 1/
@ -69,7 +79,7 @@ data constitutive_sd(:,11,1)/ 1, 0,-1/ ; data constitutive_sn(:,11,1)/-1, 1,-1/
data constitutive_sd(:,12,1)/-1,-1, 0/ ; data constitutive_sn(:,12,1)/-1, 1,-1/
!*** Slip systems for BCC structures (2) ***
constitutive_Nslip(2)=48_pInt
data constitutive_Nslip_max(2)/48/
!* System {110}<111>
!* Sort?
data constitutive_sd(:, 1,2)/ 1,-1, 1/ ; data constitutive_sn(:, 1,2)/ 0, 1, 1/
@ -126,8 +136,8 @@ data constitutive_sd(:,47,2)/ 1, 1,-1/ ; data constitutive_sn(:,47,2)/ 3,-2, 1/
data constitutive_sd(:,48,2)/ 1,-1, 1/ ; data constitutive_sn(:,48,2)/ 3, 2,-1/
!*** Slip systems for HCP structures (3) ***
constitutive_Nslip(3)=12_pInt
!* Basal systems {0001}<1120>
data constitutive_Nslip_max(3)/12/
!* Basal systems {0001}<1120> (independent of c/a-ratio)
!* 1- (0 0 0 1)[-2 1 1 0]
!* 2- (0 0 0 1)[ 1 -2 1 0]
!* 3- (0 0 0 1)[ 1 1 -2 0]
@ -139,7 +149,7 @@ constitutive_Nslip(3)=12_pInt
data constitutive_sd(:, 1,3)/-1, 0, 0/ ; data constitutive_sn(:, 1,3)/ 0, 0, 1/
data constitutive_sd(:, 2,3)/ 0,-1, 0/ ; data constitutive_sn(:, 2,3)/ 0, 0, 1/
data constitutive_sd(:, 3,3)/ 1, 1, 0/ ; data constitutive_sn(:, 3,3)/ 0, 0, 1/
!* 1st type prismatic systems {1010}<1120>
!* 1st type prismatic systems {1010}<1120> (independent of c/a-ratio)
!* 1- ( 0 1 -1 0)[-2 1 1 0]
!* 2- ( 1 0 -1 0)[ 1 -2 1 0]
!* 3- (-1 1 0 0)[ 1 1 -2 0]
@ -147,7 +157,8 @@ data constitutive_sd(:, 3,3)/ 1, 1, 0/ ; data constitutive_sn(:, 3,3)/ 0, 0, 1/
data constitutive_sd(:, 4,3)/-1, 0, 0/ ; data constitutive_sn(:, 4,3)/ 0, 1, 0/
data constitutive_sd(:, 5,3)/ 0,-1, 0/ ; data constitutive_sn(:, 5,3)/ 1, 0, 0/
data constitutive_sd(:, 6,3)/ 1, 1, 0/ ; data constitutive_sn(:, 6,3)/-1, 1, 0/
!* 1st type 1st order pyramidal systems {1011}<1120>
!* 1st type 1st order pyramidal systems {1011}<1120>
!* plane normales depend on the c/a-ratio
!* 1- ( 0 -1 1 1)[-2 1 1 0]
!* 2- ( 0 1 -1 1)[-2 1 1 0]
!* 3- (-1 0 1 1)[ 1 -2 1 0]
@ -179,7 +190,7 @@ CONTAINS
subroutine constitutive_init()
!**************************************
!*** Module initialization ***
!* Module initialization *
!**************************************
call constitutive_calc_SchmidM()
call constitutive_calc_hardeningM()
@ -189,7 +200,7 @@ end subroutine
subroutine constitutive_calc_SchmidM()
!**************************************
!*** Calculation of Schmid matrices ***
!* Calculation of Schmid matrices *
!**************************************
use prec, only: pReal,pInt
implicit none
@ -201,7 +212,7 @@ real(pReal) invNorm
!* Iteration over the crystal structures
do l=1,3
!* Iteration over the systems
do k=1,constitutive_Nslip(l)
do k=1,constitutive_Nslip_max(l)
!* Defintion of Schmid matrix
forall (i=1:3,j=1:3)
constitutive_Sslip(i,j,k,l)=constitutive_sd(i,k,l)*constitutive_sn(j,k,l)
@ -225,7 +236,7 @@ end subroutine
subroutine constitutive_calc_HardeningM()
!****************************************
!*** Hardening matrix (see Kalidindi) ***
!* Hardening matrix (see Kalidindi) *
!****************************************
use prec, only: pReal,pInt
implicit none
@ -261,86 +272,168 @@ do l=1,3
constitutive_hardening_matrix(i,j,l)=1.0_pReal
endforall
do k=4,12
constitutive_hardening_matrix(k,k,l)=1.0_ZdRe
constitutive_hardening_matrix(k,k,l)=1.0_pReal
enddo
end select
enddo
end subroutine
!* NOT YET IMPLEMENTED *!
subroutine constitutive_parse_materialDat()
!****************************************
!*** Reading parameter files ***
!****************************************
use prec, only: pReal,pInt
subroutine constitutive_parse_MatTexDat()
!***********************************************************
!* Reading material parameters and texture components file *
!***********************************************************
use prec, only: pReal,pInt
use IO
implicit none
!* Definition of variables
character*80 line
integer(pIn) i,j,k,l,positions(4)
! MISSING: needs to be 2 pass
! first pass to count Nmats and allocate
! 2nd pass to read actual parameters
write(6,*) '## constitutive_parse_materialDat ##'
write(6,*)
constitutive_Nmats = 1
open(200,FILE='material.mpie',ACTION='READ',STATUS='OLD',ERR=100)
read(200,610,ERR=200,END=200) line
IF( line(1:1).ne.'[' )THEN
WRITE(6,*) 'Problem with mat file: no mat. in 1st line'
ELSE
WRITE(6,*) 'Reading mat. data'
DO WHILE( .true. )
READ(200,610,END=220) line
IF( line(1:1).eq.'[' )THEN
constitutive_Nmats = constitutive_Nmats+1
ELSE
positions = IO_stringPos(line,2) ! parse 2 parts
SELECT CASE (IO_stringValue(line,positions,1))
CASE ('s0_slip')
s0_slip(mat) = IO_floatValue(line,positions,2)
CASE ('g0_slip')
g0_slip(mat) = IO_floatValue(line,positions,2)
CASE ('n_slip')
n_slip(mat) = IO_intValue(line,positions,2)
CASE ('h0')
h0(mat) = IO_floatValue(line,positions,2)
CASE ('w0')
w0(mat) = IO_floatValue(line,positions,2)
CASE ('tauc_sat')
tauc_sat(mat) = IO_floatValue(line,positions,2)
CASE ('C11')
C11(mat) = IO_floatValue(line,positions,2)
CASE ('C12')
C12(mat) = IO_floatValue(line,positions,2)
CASE ('C44')
C44(mat) = IO_floatValue(line,positions,2)
CASE ('TCfile')
TCfile(mat) = IO_stringValue(line,positions,2)
CASE ('ODFfile')
ODFfile(mat) = IO_stringValue(line,positions,2)
CASE ('Ngrains')
Ngrains(mat) = IO_intValue(line,positions,2)
CASE DEFAULT
WRITE(6,*) 'Unknown mat. parameter ',line
END IF
END DO
END IF
220 continue
close(200)
character(len=*) line
integer(pInt) i_pass,i,j,k,l
integer(pInt) start_positions(3)
integer(pInt) material_positions(5)
integer(pInt) texture_positions
!* Open materials_textures.mpie file
open(200,FILE='materials_textures.mpie',ACTION='READ',STATUS='OLD',ERR=100)
!* Reading file
!* Reading in 2 passes:
!* - 1rt: to get Nmats and Ntexts | to allocate arrays
!* - 2nd: to store material parameters and texture components
do i_pass=1,2
!* Allocation of arrays
if (i_pass.EQ.2) then
allocate(constitutive_ODFfile(constitutive_Ntexts)) ; constitutive_ODFfile=''
allocate(constitutive_Ngrains(constitutive_Ntexts)) ; constitutive_Ngrains=0_pInt
allocate(constitutive_symmetry(constitutive_Ntexts)) ; constitutive_symmetry=''
allocate(constitutive_crystal_structure(constitutive_Nmats)) ; constitutive_crystal_structure=0_pInt
allocate(constitutive_Nslip(constitutive_Nmats)) ; constitutive_Nslip=0_pInt
allocate(constitutive_C11(constitutive_Nmats)) ; constitutive_C11=0.0_pReal
allocate(constitutive_C12(constitutive_Nmats)) ; constitutive_C12=0.0_pReal
allocate(constitutive_C13(constitutive_Nmats)) ; constitutive_C13=0.0_pReal
allocate(constitutive_C33(constitutive_Nmats)) ; constitutive_C33=0.0_pReal
allocate(constitutive_C44(constitutive_Nmats)) ; constitutive_C44=0.0_pReal
allocate(constitutive_s0_slip(constitutive_Nmats)) ; constitutive_s0_slip=0.0_pReal
allocate(constitutive_gdot0_slip(constitutive_Nmats)) ; constitutive_gdot0_slip=0.0_pReal
allocate(constitutive_n_slip(constitutive_Nmats)) ; constitutive_n_slip=0.0_pReal
allocate(constitutive_h0(constitutive_Nmats)) ; constitutive_h0=0.0_pReal
allocate(constitutive_s_sat(constitutive_Nmats)) ; constitutive_s_sat=0.0_pReal
allocate(constitutive_w0(constitutive_Nmats)) ; constitutive_w0=0.0_pReal
endif
!* Initialisation of numbers of materials and textures
constitutive_Nmats=0_pInt
constitutive_Ntexts=0_pInt
!* Reading first line
read(200,610,ERR=200,END=200) line
start_positions=IO_stringPos(line,1)
select case(IO_stringValue(line,start_positions,1))
!* CASE1-1: First line contains <MATERIALS>
case ('<MATERIALS>')
do while(.true.)
read(200,610,END=220) line
select case(line(1:1))
!* CASE2-1: Current line contains <TEXTURE>
case ('<')
do while(.true.)
read(200,610,END=220) line
select case(line(1:1))
!* CASE4-1: Current line contains [comments]
case ('[')
constitutive_Ntexts=constitutive_Ntexts+1
!* CASE4-2: Current line contains texture parameters
case default
if (i_pass.EQ.2) then
texture_positions=IO_stringPos(line,2)
select case(IO_stringValue(line,texture_positions,1))
!* CASE5-1: Reading ODF file
case ('HybridIA')
constitutive_ODFfile(constitutive_Ntexts)=IO_stringValue(line,texture_positions,2)
!* CASE5-2: Reading Gauss component
case ('Gauss')
!* CASE5-3: Reading Fiber component
case ('Fiber')
!* CASE5-4: Reading number of grains
case ('Ngrains')
constitutive_Ngrains(constitutive_Ntexts)=IO_intValue(line,texture_positions,2)
!* CASE5-5: Reading symmetry
case ('Symmetry')
constitutive_symmetry(constitutive_Ntexts)=IO_stringValue(line,texture_positions,2)
!* CASE5-6: Reading unknown texture parameter
case default
write(6,*) 'Unknown texture parameter ',line
end select
endif
end select
enddo
!* CASE2-2: Current line contains [comments]
case ('[')
constitutive_Nmats=constitutive_Nmats+1
!* CASE2-3: Current line contains material parameters
case default
if (i_pass.EQ.2) then
material_positions=IO_stringPos(line,2)
select case(IO_stringValue(line,material_positions,1))
!* CASE3-1: Reading crystal structure
case ('crystal_structure')
constitutive_crystal_structure(constitutive_Nmats)=IO_intValue(line,material_positions,2)
!* CASE3-2: Reading number of slip systems
case ('Nslip')
constitutive_Nslip(constitutive_Nmats)=IO_intValue(line,material_positions,2)
!* CASE3-3: Reading C11 elastic constant
case ('C11')
constitutive_C11(constitutive_Nmats)=IO_floatValue(line,material_positions,2)
!* CASE3-4: Reading C12 elastic constant
case ('C12')
constitutive_C12(constitutive_Nmats)=IO_floatValue(line,material_positions,2)
!* CASE3-5: Reading C13 elastic constant
case ('C13')
constitutive_C13(constitutive_Nmats)=IO_floatValue(line,material_positions,2)
!* CASE3-6: Reading C33 elastic constant
case ('C33')
constitutive_C33(constitutive_Nmats)=IO_floatValue(line,material_positions,2)
!* CASE3-7: Reading C44 elastic constant
case ('C44')
constitutive_C44(constitutive_Nmats)=IO_floatValue(line,material_positions,2)
!* CASE3-8: Reading initial slip resistance
case ('s0_slip')
constitutive_s0_slip(constitutive_Nmats)=IO_floatValue(line,material_positions,2)
!* CASE3-9: Reading slip rate reference
case ('gdot0_slip')
constitutive_gdot0_slip(constitutive_Nmats)=IO_floatValue(line,material_positions,2)
!* CASE3-10: Reading slip rate sensitivity
case ('n_slip')
constitutive_n_slip(constitutive_Nmats)=IO_floatValue(line,material_positions,2)
!* CASE3-11: Reading initial hardening slope
case ('h0')
constitutive_h0(constitutive_Nmats)=IO_floatValue(line,material_positions,2)
!* CASE3-12: Reading saturation stress value
case ('s_sat')
constitutive_s_sat(constitutive_Nmats)=IO_floatValue(line,material_positions,2)
!* CASE3-13: Reading hardening sensitivity
case ('w0')
constitutive_w0(constitutive_Nmats)=IO_floatValue(line,material_positions,2)
!* CASE3-14: Reading unknown parameter
case default
write(6,*) 'Unknown material parameter ',line
end select
endif
end select
enddo
!* CASE1-2: First line does not contains <MATERIALS> or <TEXTURES>
case default
write(6,*) 'Problem with materials_textures.mpie file:'
write(6,*) 'No material in the first line! '
end select
enddo
!* Close file
220 continue
close(200)
!* NOT IMPLEMENTED YET *!
! ** Defintion of stiffness matrices **
! MISSING: this needs to be iterated over the materials
Cslip_66 = 0.0_pRe
@ -368,113 +461,11 @@ integer(pIn) i,j,k,l,positions(4)
Cslip_66(:,5)=2.0d0*temp
! *** Output to MARC output file ***
write(6,*) 'Material data:'
write(6,*) 'Slip parameter:(s0_slip,g0_slip,n_slip)'
write(6,*) s0_slip,g0_slip,n_slip
write(6,*) 'Slip hardening parameter:(h0,tauc_sat,w0)'
write(6,*) h0,tauc_sat,w0
write(6,*) 'Elasticity matrix:'
write(6,*) Cslip_66(1,:)
write(6,*) Cslip_66(2,:)
write(6,*) Cslip_66(3,:)
write(6,*) Cslip_66(4,:)/2.0d0
write(6,*) Cslip_66(5,:)/2.0d0
write(6,*) Cslip_66(6,:)/2.0d0
write(6,*)
call flush(6)
return
100 call IO_error(110)
200 call IO_error(210)
end subroutine
! END OF MISSING mat iterations
return
100 call _error(110)
200 call _error(210)
end
!* NOT YET IMPLEMENTED *!
subroutine READ_ORIENTATIONS
!***********************************************************************
!*** This routine reads orientations from 'orientations.mpie' ***
!***********************************************************************
use mpie
use Zahlendarstellung, only: ZdRe,ZdIn
implicit none
! *** Definition of variables ***
integer(ZdIn) i,j
! *** Read 'orientations.mpie' file ***
open(100,FILE='orientations.mpie',ACTION='READ',STATUS='OLD',
& ERR=100)
read(100,*,ERR=200,END=200)
! *** Read number of states, maximum of components over the states ***
read(100,*,ERR=200,END=200) mpie_nmat,mpie_norimx
! *** Allocate memory for the arrays ***
allocate(mpie_mat(mpie_nmat,2+7*mpie_norimx))
allocate(mpie_cko(mpie_nmat,4:35,3,0:35,2))
allocate(mpie_ckofile(mpie_nmat,80))
allocate(mpie_odfmax(mpie_nmat))
mpie_mat=0.0_ZdRe
mpie_cko=0.0_ZdRe
mpie_ckofile=''
mpie_odfmax=0.0_ZdRe
! *** Read the different states ***
do i=1,mpie_nmat
read(100,*,ERR=200,END=200)
! *** Number of component and symmetry ***
read(100,*,ERR=200,END=200) mpie_mat(i,1),mpie_mat(i,2)
! *** If symmetry = 2, use direct ODF sampling,i.e. read coefficience ***
if (mpie_mat(i,2)==2_ZdIn) then
read(100,'(80A)',ERR=200,END=201) mpie_ckofile(i,:)
201 call mpie_read_ckofile(mpie_cko(i,:,:,:,:),
& mpie_ckofile(i,:))
call mpie_odf_max(mpie_cko(i,:,:,:,:),mpie_odfmax(i))
! *** Set volume fraction to inverse of orientation number for each orientation ***
do j=1,int(mpie_mat(i,1),ZdIn)
mpie_mat(i,2+7*j)=1/mpie_mat(i,1)
enddo
else
! *** Read for every component: ***
! *** gauss: euler angles (phi1, PHI, phi2), dummy, scatter, volume fraction ***
! *** fiber: alpha1, alpha2, beta1, beta2, scatter, volume fraction ***
do j=1,int(mpie_mat(i,1),ZdIn)
read(100,*,ERR=200,END=200) mpie_mat(i,7*j-4),
& mpie_mat(i,7*j-3),mpie_mat(i,7*j-2),
& mpie_mat(i,7*j-1),mpie_mat(i,7*j),
& mpie_mat(i,7*j+1),mpie_mat(i,7*j+2)
enddo
endif
enddo
close(100)
! *** Output to MARC output file ***
write(6,*) 'MPIE Material Routine Ver. 0.1 by L. Hantcherli'
write(6,*)
write(6,*) 'Orientations data:'
write(6,*) 'Number of materials: ', mpie_nmat
write(6,*) 'Maximum number of components: ', mpie_norimx
write(6,*)
do i=1,mpie_nmat
write(6,*) 'State', i
if (mpie_mat(i,2)==2_ZdIn) then
write(6,*) mpie_ckofile(i,:),mpie_mat(i,9),mpie_odfmax(i)
else
write(6,*) mpie_mat(i,:)
endif
write(6,*)
enddo
call flush(6)
return
100 call _error(100)
200 call _error(200)
end
subroutine constitutive_calc_SlipRates(matID,tau_slip,tauc_slip,gdot_slip,dgdot_dtaucslip)
!*********************************************************************
@ -493,13 +484,13 @@ implicit none
!* Definition of variables
integer(pInt) matID,i
real(pReal) tau_slip(constitutive_Nslip(constitutive_crystal_structure(matID)))
real(pReal) tauc_slip_new(constitutive_Nslip(constitutive_crystal_structure(matID)))
real(pReal) gdot_slip(constitutive_Nslip(constitutive_crystal_structure(matID)))
real(pReal) dgdot_dtaucslip(constitutive_Nslip(constitutive_crystal_structure(matID)))
real(pReal) tau_slip(constitutive_Nslip(matID))
real(pReal) tauc_slip(constitutive_Nslip(matID))
real(pReal) gdot_slip(constitutive_Nslip(matID))
real(pReal) dgdot_dtaucslip(constitutive_Nslip(matID))
!* Iteration over the systems
do i=1,constitutive_Nslip(constitutive_crystal_structure(matID))
do i=1,constitutive_Nslip(matID)
gdot_slip(i)=constitutive_gdot0_slip(matID)*(abs(tau_slip(i))/tauc_slip(i))**constitutive_n_slip(matID)*sign(1.0_pReal,tau_slip(i))
dgdot_dtaucslip(i)=constitutive_gdot0_slip(matID)*(abs(tau_slip(i))/tauc_slip(i))**(constitutive_n_slip(matID)-1.0_pReal)*constitutive_n_slip(matID)/tauc_slip(i)
enddo
@ -524,19 +515,19 @@ implicit none
!* Definition of variables
integer(pInt) matID,i,j
real(pReal) tauc_slip(constitutive_Nslip(constitutive_crystal_structure(matID)))
real(pReal) gdot_slip(constitutive_Nslip(constitutive_crystal_structure(matID)))
real(pReal) dtauc_slip(constitutive_Nslip(constitutive_crystal_structure(matID)))
real(pReal) self_hardening(constitutive_Nslip(constitutive_crystal_structure(matID)))
real(pReal) tauc_slip(constitutive_Nslip(matID))
real(pReal) gdot_slip(constitutive_Nslip(matID))
real(pReal) dtauc_slip(constitutive_Nslip(matID))
real(pReal) self_hardening(constitutive_Nslip(matID))
!* Self-Hardening of each system
do i=1,constitutive_Nslip(constitutive_crystal_structure(matID))
do i=1,constitutive_Nslip(matID)
self_hardening(i)=constitutive_h0(matID)*(1.0_pReal-tauc_slip(i)/constitutive_s_sat(matID))**constitutive_w0(matID)*abs(gdot_slip(i))
enddo
!* Hardening for all systems
i=Nslip(crystal_structure(matID))
j=crystal_structure(matID)
i=constitutive_Nslip(matID)
j=constitutive_crystal_structure(matID)
dtauc_slip=matmul(constitutive_hardening_matrix(1:i,1:i,j),self_hardening)
return
@ -561,13 +552,13 @@ implicit none
!* Definition of variables
integer(pInt) matID,i
real(pReal) dt,Lp(3,3)
real(pReal) tau_slip(constitutive_Nslip(constitutive_crystal_structure(matID)))
real(pReal) tauc_slip_new(constitutive_Nslip(constitutive_crystal_structure(matID)))
real(pReal) gdot_slip(constitutive_Nslip(constitutive_crystal_structure(matID)))
real(pReal) tau_slip(constitutive_Nslip(matID))
real(pReal) tauc_slip_new(constitutive_Nslip(matID))
real(pReal) gdot_slip(constitutive_Nslip(matID))
!* Calculation of Lp
Lp=0.0_pReal
do i=1,constitutive_Nslip(constitutive_crystal_structure(matID))
do i=1,constitutive_Nslip(matID)
gdot_slip(i)=constitutive_gdot0_slip(matID)*(abs(tau_slip(i))/tauc_slip(i))**constitutive_n_slip(matID)*sign(1.0_pReal,tau_slip(i))
Lp=Lp+gdot_slip(i)*constitutive_Sslip(:,:,i,constitutive_crystal_structure(matID))
enddo