batmanabcdefg / sma-umat

A user-defined material subroutine for polycrystalline shape memory alloys under large deformations

SMA-UMAT

A user-defined material subroutine for polycrystalline shape memory alloys under large deformations ! Open with Notepad++ for format compatibility !XXX ! XXX ! 3D FINITE STRIN SMA UMAT XXX ! XXX ! COPYRIGHT LEI XU1, Theo Baxevanis2, Dimitris Lagoudas1 XXX ! 1 Department of Aerospace Engineering, Texas A&M University XXX ! 2 Department of Mechanical Engineering, University of Houston XXX ! Version (3-D) 20/JAN./2018 XXX ! XXX
! XXX*** XXX
! XXX MATERIAL, NAME=SMA XXX
! XXX DEPVAR XXX
! XXX 26 XXX
! XXX statev(1) = x !Martensite Vol. Frac. XXX
! XXX statev(2) = real(flag_fwd) !FWD finish at 1 or not 0 XXX
! XXX statev(3) = real(flag_rev) !REV finish at 1 or not 0 XXX
! XXX statev(4) = real(transformation) !Trans. DIR 0-elastic; -1 REV; 1 FWD XXX
! XXX statev(5:10) = et(1:6) !Trans. Strain XXX
! XXX statev(11:16) = et_tr(1:6) !Trans. Strain at reverse XXX
! XXX statev(17:22) = Lamdat_r(1:6) !Reverse DIR tensor XXX
! XXX statev(23) = RPLC XXX
! XXX statev(24) = BOUND_REACHED XXX
! XXX statev(25) = NR_CONVERGENCE XXX
! XXX statev(26) = TOO XXX
! XXX*****************************************************************************************************************************XXX ! XXX *User Material, constants=25 XXX ! XXX , , , , , , , XXX ! XXX , , , , , , , XXX
! XXX , <X_initial>, , <Tube_Flag>, <Tube_Axis>, <Tube_Radius>, , XXX
! XXX XXX ! XXX********************************************************************************************************************************XXX