more extensive numerics.yaml documentation

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Philip Eisenlohr 2023-09-04 11:39:45 -04:00
parent 30464c2d9b
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# Available numerical parameters
# Case sensitive keys
# Default values of all available numerical parameters
# Please note that keys are case sensitive
homogenization:
mechanical:
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solver:
grid:
N_staggered_iter_max: 10 # max number of field level staggered iterations
N_cutback_max: 3 # maximum cut back level (0: 1, 1: 0.5, 2: 0.25, etc)
N_staggered_iter_max: 10 # max number of field-level staggered iterations
N_cutback_max: 3 # maximum cut-back level (0: 1, 1: 0.5, 2: 0.25, etc)
damage:
N_iter_max: 100 # maximum iteration number
eps_abs_phi: 1.0e-2 # absolute tolerance for damage evolution
eps_rel_phi: 1.0e-6 # relative tolerance for damage evolution
N_iter_max: 100 # maximum iteration number
eps_abs_phi: 1.0e-2 # absolute tolerance for damage evolution
eps_rel_phi: 1.0e-6 # relative tolerance for damage evolution
thermal:
N_iter_max: 100 # maximum iteration number
eps_abs_T: 1.0e-2 # absolute tolerance for thermal equilibrium
eps_rel_T: 1.0e-6 # relative tolerance for thermal equilibrium
N_iter_max: 100 # maximum iteration number
eps_abs_T: 1.0e-2 # absolute tolerance for thermal equilibrium
eps_rel_T: 1.0e-6 # relative tolerance for thermal equilibrium
mechanical:
eps_abs_div(P): 1.0e-4 # absolute tolerance for fulfillment of stress equilibrium
eps_rel_div(P): 5.0e-4 # relative tolerance for fulfillment of stress equilibrium
eps_abs_P: 1.0e3 # absolute tolerance for fulfillment of stress BC
eps_rel_P: 1.0e-3 # relative tolerance for fulfillment of stress BC
N_iter_min: 1 # minimum iteration number
N_iter_max: 100 # maximum iteration number
update_gamma: false # Update Gamma-operator with current dPdF (not possible if memory_efficient=1)
N_iter_min: 1 # minimum iteration number
N_iter_max: 100 # maximum iteration number
eps_abs_div(P): 1.0e-4 # absolute tolerance for fulfillment of stress equilibrium
eps_rel_div(P): 5.0e-4 # relative tolerance for fulfillment of stress equilibrium
eps_abs_P: 1.0e3 # absolute tolerance for fulfillment of stress BC
eps_rel_P: 1.0e-3 # relative tolerance for fulfillment of stress BC
update_gamma: false # update Gamma-operator with current dPdF (not possible if FFT:memory_efficient=true)
FFT:
memory_efficient: True # Precalculate Gamma-operator (81 double per point)
divergence_correction: size+grid # Use size-independent divergence criterion
derivative: continuous # Approximation used for derivatives in Fourier space
FFTW_plan_mode: FFTW_MEASURE # planing-rigor flag, see manual on www.fftw.org
FFTW_timelimit: -1.0 # timelimit of plan creation for FFTW, see manual on www.fftw.org. -1.0: disable timelimit
PETSc_options: -snes_type ngmres -snes_ngmres_anderson # PETSc solver options
alpha: 1.0 # polarization scheme parameter 0.0 < alpha < 2.0. alpha = 1.0 ==> AL scheme, alpha = 2.0 ==> accelerated scheme
beta: 1.0 # polarization scheme parameter 0.0 < beta < 2.0. beta = 1.0 ==> AL scheme, beta = 2.0 ==> accelerated scheme
eps_abs_curl(F): 1.0e-10 # absolute tolerance for fulfillment of strain compatibility
eps_rel_curl(F): 5.0e-4 # relative tolerance for fulfillment of strain compatibility
memory_efficient: true # precalculate Gamma-operator (81 doubles per point)
divergence_correction: size+grid # use size-independent divergence criterion {none, size, size+grid}
derivative: continuous # approximation used for derivatives in Fourier space {continuous, central_difference, FWBW_difference}
FFTW_plan_mode: FFTW_MEASURE # planning-rigor flags, see manual at https://www.fftw.org/fftw3_doc/Planner-Flags.html
FFTW_timelimit: -1.0 # time limit of plan creation for FFTW, see manual on www.fftw.org. (-1.0: disable time limit)
PETSc_options: -snes_type ngmres -snes_ngmres_anderson # PETSc solver options
alpha: 1.0 # polarization scheme parameter 0.0 < alpha < 2.0 (alpha = 1.0 ==> AL scheme, alpha = 2.0 ==> accelerated scheme)
beta: 1.0 # polarization scheme parameter 0.0 < beta < 2.0 ( beta = 1.0 ==> AL scheme, beta = 2.0 ==> accelerated scheme)
eps_abs_curl(F): 1.0e-10 # absolute tolerance for fulfillment of strain compatibility
eps_rel_curl(F): 5.0e-4 # relative tolerance for fulfillment of strain compatibility
mesh:
maxCutBack: 3 # maximum cut back level (0: 1, 1: 0.5, 2: 0.25, etc)
maxStaggeredIter: 10 # max number of field level staggered iterations
structorder: 2 # order of displacement shape functions (when mesh is defined)
maxCutBack: 3 # maximum cut back level (0: 1, 1: 0.5, 2: 0.25, etc)
maxStaggeredIter: 10 # max number of field level staggered iterations
structorder: 2 # order of displacement shape functions
bbarstabilisation: false
integrationorder: 2 # order of quadrature rule required (when mesh is defined)
itmax: 250 # Maximum iteration number
itmin: 2 # Minimum iteration number
eps_struct_atol: 1.0e-10 # absolute tolerance for mechanical equilibrium
eps_struct_rtol: 1.0e-4 # relative tolerance for mechanical equilibrium
integrationorder: 2 # order of quadrature rule required
itmax: 250 # maximum iteration number
itmin: 2 # minimum iteration number
eps_struct_atol: 1.0e-10 # absolute tolerance for mechanical equilibrium
eps_struct_rtol: 1.0e-4 # relative tolerance for mechanical equilibrium
phase:
mechanical:
r_cutback_min: 1.0e-3 # minimum (relative) size of step allowed during cutback in phase state calculation
r_cutback: 0.25 # factor to decrease size of step when cutback introduced in phase state calculation (value between 0 and 1)
r_increase: 1.5 # factor to increase size of next step when previous step converged in phase state calculation
eps_rel_state: 1.0e-6 # relative tolerance in phase state loop (abs tol provided by constitutive law)
N_iter_state_max: 10 # state loop limit
r_cutback_min: 1.0e-3 # minimum (relative) size of step allowed during cutback in phase state calculation
r_cutback: 0.25 # factor to decrease size of step when cutback introduced in phase state calculation (value between 0 and 1)
r_increase: 1.5 # factor to increase size of next step when previous step converged in phase state calculation
eps_rel_state: 1.0e-6 # relative tolerance in phase state loop (abs tol provided by constitutive law)
N_iter_state_max: 10 # state loop limit
plastic:
r_linesearch_Lp: 0.5 # factor to decrease the step due to non-convergence in Lp calculation
eps_rel_Lp: 1.0e-6 # relative tolerance in Lp residuum
eps_abs_Lp: 1.0e-8 # absolute tolerance in Lp residuum
N_iter_Lp_max: 40 # stress loop limit for Lp
f_update_jacobi_Lp: 1 # frequency of Jacobian update of residuum in Lp
integrator_state: FPI # integration method (FPI = Fixed Point Iteration, Euler = Euler, AdaptiveEuler = Adaptive Euler, RK4 = classical 4th order Runge-Kutta, RKCK45 = 5th order Runge-Kutta Cash-Karp)
r_linesearch_Lp: 0.5 # factor to decrease the step due to non-convergence in Lp calculation
eps_rel_Lp: 1.0e-6 # relative tolerance in Lp residuum
eps_abs_Lp: 1.0e-8 # absolute tolerance in Lp residuum
N_iter_Lp_max: 40 # stress loop limit for Lp
f_update_jacobi_Lp: 1 # frequency of Jacobian update of residuum in Lp
integrator_state: FPI # integration method (FPI = Fixed Point Iteration, Euler = Euler, AdaptiveEuler = Adaptive Euler, RK4 = classical 4th order Runge-Kutta, RKCK45 = 5th order Runge-Kutta Cash-Karp)
eigen:
r_linesearch_Li: 0.5 # factor to decrease the step due to non-convergence in Li calculation
eps_rel_Li: 1.0e-6 # relative tolerance in Li residuum
eps_abs_Li: 1.0e-8 # absolute tolerance in Li residuum
N_iter_Li_max: 40 # stress loop limit for Li
f_update_jacobi_Li: 1 # frequency of Jacobian update of residuum in Li
r_linesearch_Li: 0.5 # factor to decrease the step due to non-convergence in Li calculation
eps_rel_Li: 1.0e-6 # relative tolerance in Li residuum
eps_abs_Li: 1.0e-8 # absolute tolerance in Li residuum
N_iter_Li_max: 40 # stress loop limit for Li
f_update_jacobi_Li: 1 # frequency of updating the Jacobian of residuum in Li
commercialFEM:
unitlength: 1 # physical length of one computational length unit
unitlength: 1 # physical length of one computational length unit
generic:
random_seed: 0 # fixed seeding for pseudo-random number generator, Default 0: use random seed.
phi_min: 1.0e-6 # non-zero residual damage.
random_seed: 0 # fixed seeding for pseudo-random number generator (0: use random seed)
phi_min: 1.0e-6 # non-zero residual damage