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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!! !!!
!!! Created by Martin Genet, 2008-2016 !!!
!!! !!!
!!! Laboratoire de Mécanique et de Technologie (LMT), Cachan, France !!!
!!! Lawrence Berkeley National Laboratory, California, USA !!!
!!! University of California at San Francisco, USA !!!
!!! Swiss Federal Institute of Technology (ETH), Zurich, Switzerland !!!
!!! École Polytechnique, Palaiseau, France !!!
!!! !!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! ----------------
! --------------------------------------------------------- INCLUDES ---
! ----------------
#include "UTILS/PRINT_UMAT_DATA.f"
#include "UTILS/VEC_MAT_TOOLS.f"
#include "FINITE TRANSFORMATION/PUSH_FORWARD.f"
#include "FINITE TRANSFORMATION/JAUMANN.f"
! -----------------
! ------------------------------------------------------ VUMAT_3D_FUNG -
! -----------------
SUBROUTINE VUMAT_3D_FUNG (NBLOCK, NDIR, NSHR, NSTATEV, NFIELDV, NPROPS, LANNEAL, STEPTIME, TOTALTIME, DT, CMNAME, COORDMP, CHARLENGTH, PROPS, DENSITY, STRAININC, RELSPININC, TEMPOLD, STRETCHOLD, DEFGRADOLD, FIELDOLD, STRESSOLD, STATEOLD, ENERINTERNOLD, ENERINELASOLD, TEMPNEW, STRETCHNEW, DEFGRADNEW, FIELDNEW, STRESSNEW, STATENEW, ENERINTERNNEW, ENERINELASNEW)
IMPLICIT NONE
! -------------------------------------------------- INPUT VARIABLES ---
CHARACTER*80 CMNAME
INTEGER NBLOCK, NDIR, NSHR, NSTATEV, NFIELDV, NPROPS, LANNEAL
REAL STEPTIME, TOTALTIME, DT, COORDMP(NBLOCK,*), CHARLENGTH(NBLOCK), PROPS(NPROPS), DENSITY(NBLOCK), STRAININC(NBLOCK,NDIR+NSHR), RELSPININC(NBLOCK,NSHR), TEMPOLD(NBLOCK), STRETCHOLD(NBLOCK,NDIR+NSHR), DEFGRADOLD(NBLOCK,NDIR+NSHR+NSHR), FIELDOLD(NBLOCK,NFIELDV), STRESSOLD(NBLOCK,NDIR+NSHR), STATEOLD(NBLOCK,NSTATEV), ENERINTERNOLD(NBLOCK), ENERINELASOLD(NBLOCK), TEMPNEW(NBLOCK), STRETCHNEW(NBLOCK,NDIR+NSHR), DEFGRADNEW(NBLOCK,NDIR+NSHR+NSHR), FIELDNEW(NBLOCK,NFIELDV), STRESSNEW(NBLOCK,NDIR+NSHR), STATENEW(NBLOCK,NSTATEV), ENERINTERNNEW(NBLOCK), ENERINELASNEW(NBLOCK)
! -------------------------------------------------- LOCAL VARIABLES ---
INTEGER I, J, K, L, IJ, KL, GET_IJ, GET_I, GET_J
DOUBLE PRECISION C0, B01111, B02222, B03333, B01212, B01313, B02323, T, DT, IDNDI(NDI,NDI), FT(NDI,NDI), DET33, DETFT, CT(NDI,NDI), ET(NDI,NDI), FE(NDI,NDI), DETFE, CE(NDI,NDI), EE(NDI,NDI), EXP_TERM, PK2_VEC(NTENS), PK2_MAT(NDI,NDI), STRESS_MAT(NDI,NDI), DUMMY, H(NTENS,NTENS)
INTEGER IS_GROWING, LAMBDAG_NUM_IT
DOUBLE PRECISION LAMBDAG_TINI, LAMBDAG_TFIN, LAMBDAG_XMIN, LAMBDAG_XMAX, LAMBDAG_GAMMA, LAMBDAG_TAU, LAMBDAG_MIN, LAMBDAG_MAX, LAMBDAG_DOT, LAMBDAG_OLD, LAMBDAG_RES, LAMBDAG_RES_OLD, LAMBDAG, LAMBDAG_X, POS_PART, LAMBDAG_ERR, LAMBDAG_RELAX
! --------------------------------------------------- INITIALIZATION ---
C0 = PROPS(1)
B01111 = PROPS(2)
B02222 = PROPS(3)
B03333 = PROPS(4)
B01212 = PROPS(5)
B01313 = PROPS(6)
B02323 = PROPS(7)
DUMMY = PROPS(8)
LAMBDAG_TINI = PROPS( 9)
LAMBDAG_TFIN = PROPS(10)
LAMBDAG_XMIN = PROPS(11)
LAMBDAG_XMAX = PROPS(12)
LAMBDAG_GAMMA = PROPS(13)
LAMBDAG_TAU = PROPS(14)
LAMBDAG_MIN = PROPS(15)
LAMBDAG_MAX = PROPS(16)
CALL SETID33(IDNDI)
! PRINT *, "IDNDI = ", IDNDI
DT = DTIME
T = TIME(2)+DT
FT = DFGRD1
DETFT = DET33(FT)
CT = MATMUL(TRANSPOSE(FT), FT)
ET = (CT - IDNDI)/2
! STATEV( 3) = FT(1,1)
! STATEV( 4) = FT(1,2)
! STATEV( 5) = FT(1,3)
! STATEV( 6) = FT(2,1)
! STATEV( 7) = FT(2,2)
! STATEV( 8) = FT(2,3)
! STATEV( 9) = FT(3,1)
! STATEV(10) = FT(3,2)
! STATEV(11) = FT(3,3)
! ----------------------------------------------------------- GROWTH ---
! LAMBDAG
IF (LAMBDAG_TAU > 0.) THEN
LAMBDAG = T/LAMBDAG_TAU
ELSE
LAMBDAG = 0.
ENDIF
! FE, CE, EE
FE = FT / (1.+LAMBDAG)
DETFE = DET33(FE)
CE = MATMUL(TRANSPOSE(FE), FE)
EE = (CE - IDNDI)/2
! PRINT *, "FE = ", FE
! PRINT *, "CE = ", CE
! PRINT *, "EE = ", EE
! STATEV(3) = DETFE
! STATEV(3) = EE(1,1)
! EXP_TERM
EXP_TERM = B01111*EE(1,1)**2 &
+ B02222*EE(2,2)**2 &
+ B03333*EE(3,3)**2 &
+4*B01212*EE(1,2)**2 &
+4*B01313*EE(1,3)**2 &
+4*B02323*EE(2,3)**2
! PRINT *, "EXP_TERM = ", EXP_TERM
IF (EXP_TERM > 700) THEN
PRINT *, "STEP ", KSTEP, ", INCREMENT ", KINC, ", ELEMENT ", NOEL, ", INTEGRATION POINT ", NPT, ": TOO LARGE DEFORMATION…"
EXP_TERM = 700
PNEWDT = 0.5
ENDIF
EXP_TERM = EXP(EXP_TERM)
! PRINT *, "EXP_TERM = ", EXP_TERM
! STATEV(3) = EXP_TERM
! ----------------------------------------------------------- STRESS ---
! SECOND PIOLA KIRSCHOFF STRESS
PK2_VEC(1) = C0 * EXP_TERM * B01111*EE(1,1)
PK2_VEC(2) = C0 * EXP_TERM * B02222*EE(2,2)
PK2_VEC(3) = C0 * EXP_TERM * B03333*EE(3,3)
PK2_VEC(4) = C0 * EXP_TERM * 2*B01212*EE(1,2)
PK2_VEC(5) = C0 * EXP_TERM * 2*B01313*EE(1,3)
PK2_VEC(6) = C0 * EXP_TERM * 2*B02323*EE(2,3)
! PRINT *, "PK2_VEC = ", PK2_VEC
! STATEV(3) = PK2_VEC(4)
! CAUCHY STRESS
CALL MATSYM33_FROM_VECCOL6(PK2_MAT, PK2_VEC)
CALL CAUCHYSTRESS33_FROM_PK2STRESS33(STRESS_MAT, PK2_MAT, FT)
CALL VECCOL6_FROM_MATSYM33(STRESS, STRESS_MAT)
! PRINT *, "STRESS = ", STRESS
! -------------------------------------------------- STATE VARIABLES ---
STATEV(1) = LAMBDAG_X
STATEV(2) = LAMBDAG
! -------------------------------------------------------------- END ---
RETURN
END SUBROUTINE UMAT_3D_FUNG