!********************************************************************
! Material subroutine for MSC.Marc Version 0.1
!
! written by F. Roters, P. Eisenlohr, L. Hantcherli, W.A. Counts
! MPI fuer Eisenforschung, Duesseldorf
!
! last modified: 28.03.2007
!********************************************************************
! Usage:
! - choose material as hypela2
! - set statevariable 2 to index of material
! - set statevariable 3 to index of texture
! - choose output of user variables if desired
! - make sure the file "mattex.mpie" exists in the working
! directory
! - use nonsymmetric option for solver (e.g. direct
! profile or multifrontal sparse, the latter seems
! to be faster!)
!********************************************************************
! Marc subroutines used:
! - hypela2
! - plotv
! - quit
!********************************************************************
! Marc common blocks included:
! - concom: lovl, ncycle, inc, incsub
! - creeps: timinc
!********************************************************************
!
include "prec.f90"
include "math.f90"
include "IO.f90"
include "mesh.f90"
include "constitutive.f90"
include "CPFEM.f90"
!
SUBROUTINE hypela2(d,g,e,de,s,t,dt,ngens,n,nn,kcus,matus,ndi,&
nshear,disp,dispt,coord,ffn,frotn,strechn,eigvn,ffn1,&
frotn1,strechn1,eigvn1,ncrd,itel,ndeg,ndm,&
nnode,jtype,lclass,ifr,ifu)
!********************************************************************
! This is the Marc material routine
!********************************************************************
!
! ************* user subroutine for defining material behavior **************
!
!
! CAUTION : Due to calculation of the Deformation gradients, Stretch Tensors and
! Rotation tensors at previous and current states, the analysis can be
! computationally expensive. Please use the user subroutine -> hypela
! if these kinematic quantities are not needed in the constitutive model
!
!
! IMPORTANT NOTES :
!
! (1) F,R,U are only available for continuum and membrane elements (not for
! shells and beams).
!
! (2) For total Lagrangian formulation use the -> 'Elasticity,1' card(=
! total Lagrange with large disp) in the parameter section of input deck.
! For updated Lagrangian formulation use the -> 'Plasticity,3' card(=
! update+finite+large disp+constant d) in the parameter section of
! input deck.
!
!
! d stress strain law to be formed
! g change in stress due to temperature effects
! e total elastic strain
! de increment of strain
! s stress - should be updated by user
! t state variables (comes in at t=n, must be updated
! to have state variables at t=n+1)
! dt increment of state variables
! ngens size of stress - strain law
! n element number
! nn integration point number
! kcus(1) layer number
! kcus(2) internal layer number
! matus(1) user material identification number
! matus(2) internal material identification number
! ndi number of direct components
! nshear number of shear components
! disp incremental displacements
! dispt displacements at t=n (at assembly, lovl=4) and
! displacements at t=n+1 (at stress recovery, lovl=6)
! coord coordinates
! ncrd number of coordinates
! ndeg number of degrees of freedom
! itel dimension of F and R, either 2 or 3
! nnode number of nodes per element
! jtype element type
! lclass element class
! ifr set to 1 if R has been calculated
! ifu set to 1 if strech has been calculated
!
! at t=n :
!
! ffn deformation gradient
! frotn rotation tensor
! strechn square of principal stretch ratios, lambda(i)
! eigvn(i,j) i principal direction components for j eigenvalues
!
! at t=n+1 :
!
! ffn1 deformation gradient
! frotn1 rotation tensor
! strechn1 square of principal stretch ratios, lambda(i)
! eigvn1(i,j) i principal direction components for j eigenvalues
!
! The following operation obtains U (stretch tensor) at t=n+1 :
!
! call scla(un1,0.d0,itel,itel,1)
! do 3 k=1,3
! do 2 i=1,3
! do 1 j=1,3
! un1(i,j)=un1(i,j)+dsqrt(strechn1(k))*eigvn1(i,k)*eigvn1(j,k)
!1 continue
!2 continue
!3 continue
!
!
use prec, only: pReal,pInt
use math, only: invnrmMandel, nrmMandel
use mesh, only: mesh_FEasCP
use CPFEM, only: CPFEM_general,CPFEM_stress_all, CPFEM_jaco_old
implicit real(pReal) (a-h,o-z)
!
! Marc common blocks are in fixed format so they have to be pasted in here
! Beware of changes in newer Marc versions -- these are from 2005r3
! concom is needed for inc, subinc, ncycle, lovl
! include 'concom'
common/concom/ &
iacous, iasmbl, iautth, ibear, icompl, iconj, icreep, ideva(50), idyn, idynt,&
ielas, ielcma, ielect, iform, ifour, iharm, ihcps, iheat, iheatt, ihresp,&
ijoule, ilem, ilnmom, iloren, inc, incext, incsub, ipass, iplres, ipois,&
ipoist, irpflo, ismall, ismalt, isoil, ispect, ispnow, istore, iswep, ithcrp,&
itherm, iupblg, iupdat, jacflg, jel, jparks, largst, lfond, loadup, loaduq,&
lodcor, lovl, lsub, magnet, ncycle, newtnt, newton, noshr, linear, ivscpl,&
icrpim, iradrt, ipshft, itshr, iangin, iupmdr, iconjf, jincfl, jpermg, jhour,&
isolvr, jritz, jtable, jshell, jdoubl, jform, jcentr, imini, kautth, iautof,&
ibukty, iassum, icnstd, icnstt, kmakmas, imethvp,iradrte,iradrtp, iupdate,iupdatp,&
ncycnt, marmen ,idynme, ihavca, ispf, kmini, imixed, largtt, kdoela, iautofg,&
ipshftp,idntrc, ipore, jtablm, jtablc, isnecma,itrnspo,imsdif, jtrnspo,mcnear,&
imech, imecht, ielcmat, ielectt,magnett, imsdift,noplas, jtabls, jactch, jtablth,&
kgmsto ,jpzo, ifricsh, iremkin,iremfor, ishearp,jspf, machining, jlshell,icompsol,&
iupblgfo,jcondir,nstcrp, nactive,ipassref, nstspnt,ibeart,icheckmpc, noline, icuring,&
ishrink,ioffsflg,isetoff, iharmt, inc_incdat, iautspc,ibrake
! creeps is needed for timinc (time increment)
! include 'creeps'
common/creeps/ &
cptim,timinc,timinc_p,timinc_s,timincm,timinc_a,timinc_b,creept(33),icptim,icfte,icfst,&
icfeq,icftm,icetem,mcreep,jcreep,icpa,icftmp,icfstr,icfqcp,icfcpm,icrppr,icrcha,icpb,iicpmt,iicpa
!
integer(pInt) cp_en, i
!
dimension e(*),de(*),t(*),dt(*),g(*),d(ngens,*),s(*), n(2),coord(ncrd,*),disp(ndeg,*),matus(2),dispt(ndeg,*),ffn(itel,*),&
frotn(itel,*),strechn(itel),eigvn(itel,*),ffn1(itel,*),frotn1(itel,*),strechn1(itel),eigvn1(itel,*),kcus(2)
!
! call general material routine only in cycle 0 and for lovl==6 (stress recovery)
! subroutine cpfem_general(mpie_ffn, mpie_ffn1, mpie_cn, mpie_tinc, mpie_enp, mpie_in)
!********************************************************************
! This routine calculates the material behaviour
!********************************************************************
! mpie_ffn deformation gradient for t=t0
! mpie_ffn1 deformation gradient for t=t1
! mpie_cn number of cycle
! mpie_tinc time increment
! mpie_en element number
! mpie_in intergration point number
!********************************************************************
if ((lovl==6).or.(ncycle==0)) then
call CPFEM_general(ffn, ffn1, inc, incsub, ncycle, timinc, n(1), nn)
endif
! return stress and jacobi
! Mandel: 11, 22, 33, 12, 23, 13
! Marc: 11, 22, 33, 12, 23, 13
cp_en = mesh_FEasCP('elem', n(1))
s(1:ngens)=invnrmMandel(1:ngens)*CPFEM_stress_all(1:ngens, nn, cp_en)
d(1:ngens,1:ngens)=CPFEM_jaco_old(1:ngens,1:ngens, nn, cp_en)
forall(i=1:ngens) d(1:ngens,i)=d(1:ngens,i)*invnrmMandel(1:ngens)
return
END SUBROUTINE
!
!
SUBROUTINE plotv(v,s,sp,etot,eplas,ecreep,t,m,nn,layer,ndi,nshear,jpltcd)
!********************************************************************
! This routine sets user defined output variables for Marc
!********************************************************************
!
! select a variable contour plotting (user subroutine).
!
! v variable
! s (idss) stress array
! sp stresses in preferred direction
! etot total strain (generalized)
! eplas total plastic strain
! ecreep total creep strain
! t current temperature
! m element number
! nn integration point number
! layer layer number
! ndi (3) number of direct stress components
! nshear (3) number of shear stress components
!
!********************************************************************
use prec, only: pReal,pInt
use CPFEM, only: CPFEM_results, CPFEM_Nresults
use constitutive, only: constitutive_maxNresults
use mesh, only: mesh_FEasCP
implicit none
!
real(pReal) s(*),etot(*),eplas(*),ecreep(*),sp(*)
real(pReal) v, t(*)
integer(pInt) m, nn, layer, ndi, nshear, jpltcd
!
! assign result variable
v=CPFEM_results(mod(jpltcd, CPFEM_Nresults+constitutive_maxNresults),&
int(jpltcd/(CPFEM_Nresults+constitutive_maxNresults)),&
nn, mesh_FEasCP('elem', m))
return
END SUBROUTINE
!
!
! subroutine utimestep(timestep,timestepold,icall,time,timeloadcase)
!********************************************************************
! This routine modifies the addaptive time step of Marc
!********************************************************************
! use prec, only: pReal,pInt
! use CPFEM, only : CPFEM_timefactor_max
! implicit none
!
! real(pReal) timestep, timestepold, time,timeloadcase
! integer(pInt) icall
!
! user subroutine for modifying the time step in auto step
!
! timestep : the current time step as suggested by marc
! to be modified in this routine
! timestepold : the current time step before it was modified by marc
! icall : =1 for setting the initial time step
! =2 if this routine is called during an increment
! =3 if this routine is called at the beginning
! of the increment
! time : time at the start of the current increment
! timeloadcase: time period of the current load case
!
! it is in general not recommended to increase the time step
! during the increment.
! this routine is called right after the time step has (possibly)
! been updated by marc.
!
! user coding
! reduce timestep during increment in case mpie_timefactor is too large
! if(icall==2_pInt) then
! if(mpie_timefactor_max>1.25_pReal) then
! timestep=min(timestep,timestepold*0.8_pReal)
! end if
! return
! modify timestep at beginning of new increment
! else if(icall==3_pInt) then
! if(mpie_timefactor_max<=0.8_pReal) then
! timestep=min(timestep,timestepold*1.25_pReal)
! else if (mpie_timefactor_max<=1.0_pReal) then
! timestep=min(timestep,timestepold/mpie_timefactor_max)
! else if (mpie_timefactor_max<=1.25_pReal) then
! timestep=min(timestep,timestepold*1.01_pReal)
! else
! timestep=min(timestep,timestepold*0.8_pReal)
! end if
! end if
! return
! end