!-------------------------------------------------------------------------------------------------- !> @author Luv Sharma, Max-Planck-Institut für Eisenforschung GmbH !> @author Pratheek Shanthraj, Max-Planck-Institut für Eisenforschung GmbH !> @brief material subroutine incorporating kinematics resulting from opening of slip planes !> @details to be done !-------------------------------------------------------------------------------------------------- submodule(phase:eigendeformation) slipplaneopening integer, dimension(:), allocatable :: kinematics_slipplane_opening_instance type :: tParameters !< container type for internal constitutive parameters integer :: & sum_N_sl !< total number of cleavage planes real(pReal) :: & dot_o, & !< opening rate of cleavage planes q !< damage rate sensitivity real(pReal), dimension(:), allocatable :: & g_crit real(pReal), dimension(:,:,:), allocatable :: & P_d, & P_t, & P_n end type tParameters type(tParameters), dimension(:), allocatable :: param !< containers of constitutive parameters (len Ninstances) contains !-------------------------------------------------------------------------------------------------- !> @brief module initialization !> @details reads in material parameters, allocates arrays, and does sanity checks !-------------------------------------------------------------------------------------------------- module function kinematics_slipplane_opening_init(kinematics_length) result(myKinematics) integer, intent(in) :: kinematics_length logical, dimension(:,:), allocatable :: myKinematics integer :: Ninstances,p,i,k character(len=pStringLen) :: extmsg = '' integer, dimension(:), allocatable :: N_sl real(pReal), dimension(:,:), allocatable :: d,n,t class(tNode), pointer :: & phases, & phase, & mech, & pl, & kinematics, & kinematic_type print'(/,a)', ' <<<+- phase:mechanics:eigendeformation:slipplaneopening init -+>>>' myKinematics = kinematics_active2('isoductile',kinematics_length) Ninstances = count(myKinematics) print'(a,i2)', ' # instances: ',Ninstances; flush(IO_STDOUT) if(Ninstances == 0) return phases => config_material%get('phase') allocate(kinematics_slipplane_opening_instance(phases%length), source=0) allocate(param(Ninstances)) do p = 1, phases%length if(any(myKinematics(:,p))) kinematics_slipplane_opening_instance(p) = count(myKinematics(:,1:p)) phase => phases%get(p) mech => phase%get('mechanics') pl => mech%get('plasticity') if(count(myKinematics(:,p)) == 0) cycle kinematics => phase%get('damage') do k = 1, kinematics%length if(myKinematics(k,p)) then associate(prm => param(kinematics_slipplane_opening_instance(p))) kinematic_type => kinematics%get(k) prm%dot_o = kinematic_type%get_asFloat('dot_o') prm%q = kinematic_type%get_asFloat('q') N_sl = pl%get_asInts('N_sl') prm%sum_N_sl = sum(abs(N_sl)) d = lattice_slip_direction (N_sl,phase%get_asString('lattice'),& phase%get_asFloat('c/a',defaultVal=0.0_pReal)) t = lattice_slip_transverse(N_sl,phase%get_asString('lattice'),& phase%get_asFloat('c/a',defaultVal=0.0_pReal)) n = lattice_slip_normal (N_sl,phase%get_asString('lattice'),& phase%get_asFloat('c/a',defaultVal=0.0_pReal)) allocate(prm%P_d(3,3,size(d,2)),prm%P_t(3,3,size(t,2)),prm%P_n(3,3,size(n,2))) do i=1, size(n,2) prm%P_d(1:3,1:3,i) = math_outer(d(1:3,i), n(1:3,i)) prm%P_t(1:3,1:3,i) = math_outer(t(1:3,i), n(1:3,i)) prm%P_n(1:3,1:3,i) = math_outer(n(1:3,i), n(1:3,i)) enddo prm%g_crit = kinematic_type%get_asFloats('g_crit',requiredSize=size(N_sl)) ! expand: family => system prm%g_crit = math_expand(prm%g_crit,N_sl) ! sanity checks if (prm%q <= 0.0_pReal) extmsg = trim(extmsg)//' anisoDuctile_n' if (prm%dot_o <= 0.0_pReal) extmsg = trim(extmsg)//' anisoDuctile_sdot0' if (any(prm%g_crit < 0.0_pReal)) extmsg = trim(extmsg)//' anisoDuctile_critLoad' !-------------------------------------------------------------------------------------------------- ! exit if any parameter is out of range if (extmsg /= '') call IO_error(211,ext_msg=trim(extmsg)//'(slipplane_opening)') end associate endif enddo enddo end function kinematics_slipplane_opening_init !-------------------------------------------------------------------------------------------------- !> @brief contains the constitutive equation for calculating the velocity gradient !-------------------------------------------------------------------------------------------------- module subroutine kinematics_slipplane_opening_LiAndItsTangent(Ld, dLd_dTstar, S, co, ip, el) integer, intent(in) :: & co, & !< grain number ip, & !< integration point number el !< element number real(pReal), intent(in), dimension(3,3) :: & S real(pReal), intent(out), dimension(3,3) :: & Ld !< damage velocity gradient real(pReal), intent(out), dimension(3,3,3,3) :: & dLd_dTstar !< derivative of Ld with respect to Tstar (4th-order tensor) integer :: & instance, phase, & homog, damageOffset, & i, k, l, m, n real(pReal) :: & traction_d, traction_t, traction_n, traction_crit, & udotd, dudotd_dt, udott, dudott_dt, udotn, dudotn_dt phase = material_phaseAt(co,el) instance = kinematics_slipplane_opening_instance(phase) homog = material_homogenizationAt(el) damageOffset = material_homogenizationMemberAt(ip,el) associate(prm => param(instance)) Ld = 0.0_pReal dLd_dTstar = 0.0_pReal do i = 1, prm%sum_N_sl traction_d = math_tensordot(S,prm%P_d(1:3,1:3,i)) traction_t = math_tensordot(S,prm%P_t(1:3,1:3,i)) traction_n = math_tensordot(S,prm%P_n(1:3,1:3,i)) traction_crit = prm%g_crit(i)* phase_damage_get_phi(co,ip,el) ! degrading critical load carrying capacity by damage udotd = sign(1.0_pReal,traction_d)* prm%dot_o* ( abs(traction_d)/traction_crit & - abs(traction_d)/prm%g_crit(i))**prm%q udott = sign(1.0_pReal,traction_t)* prm%dot_o* ( abs(traction_t)/traction_crit & - abs(traction_t)/prm%g_crit(i))**prm%q udotn = prm%dot_o* ( max(0.0_pReal,traction_n)/traction_crit & - max(0.0_pReal,traction_n)/prm%g_crit(i))**prm%q if (dNeq0(traction_d)) then dudotd_dt = udotd*prm%q/traction_d else dudotd_dt = 0.0_pReal endif if (dNeq0(traction_t)) then dudott_dt = udott*prm%q/traction_t else dudott_dt = 0.0_pReal endif if (dNeq0(traction_n)) then dudotn_dt = udotn*prm%q/traction_n else dudotn_dt = 0.0_pReal endif forall (k=1:3,l=1:3,m=1:3,n=1:3) & dLd_dTstar(k,l,m,n) = dLd_dTstar(k,l,m,n) & + dudotd_dt*prm%P_d(k,l,i)*prm%P_d(m,n,i) & + dudott_dt*prm%P_t(k,l,i)*prm%P_t(m,n,i) & + dudotn_dt*prm%P_n(k,l,i)*prm%P_n(m,n,i) Ld = Ld & + udotd*prm%P_d(1:3,1:3,i) & + udott*prm%P_t(1:3,1:3,i) & + udotn*prm%P_n(1:3,1:3,i) enddo end associate end subroutine kinematics_slipplane_opening_LiAndItsTangent end submodule slipplaneopening