bool
FrictionalContactProblem::calculateSlip(const NumericVector<Number>& ghosted_solution,
std::vector<SlipData> * iterative_slip)
{
NonlinearSystem & nonlinear_sys = getNonlinearSystem();
unsigned int dim = nonlinear_sys.subproblem().mesh().dimension();
MooseVariable * residual_x_var = &getVariable(0,_residual_x);
MooseVariable * residual_y_var = &getVariable(0,_residual_y);
MooseVariable * residual_z_var = NULL;
MooseVariable * diag_stiff_x_var = &getVariable(0,_diag_stiff_x);
MooseVariable * diag_stiff_y_var = &getVariable(0,_diag_stiff_y);
MooseVariable * diag_stiff_z_var = NULL;
MooseVariable * inc_slip_x_var = &getVariable(0,_inc_slip_x);
MooseVariable * inc_slip_y_var = &getVariable(0,_inc_slip_y);
MooseVariable * inc_slip_z_var = NULL;
if (dim == 3)
{
residual_z_var = &getVariable(0,_residual_z);
diag_stiff_z_var = &getVariable(0,_diag_stiff_z);
inc_slip_z_var = &getVariable(0,_inc_slip_z);
}
bool updatedSolution = false;
_slip_residual = 0.0;
_it_slip_norm = 0.0;
_inc_slip_norm = 0.0;
TransientNonlinearImplicitSystem & system = getNonlinearSystem().sys();
if (iterative_slip)
iterative_slip->clear();
if (getDisplacedProblem() && _interaction_params.size() > 0)
{
computeResidual(system, ghosted_solution, *system.rhs);
_num_contact_nodes = 0;
_num_slipping = 0;
_num_slipped_too_far = 0;
GeometricSearchData & displaced_geom_search_data = getDisplacedProblem()->geomSearchData();
std::map<std::pair<unsigned int, unsigned int>, PenetrationLocator *> * penetration_locators = &displaced_geom_search_data._penetration_locators;
AuxiliarySystem & aux_sys = getAuxiliarySystem();
const NumericVector<Number> & aux_solution = *aux_sys.currentSolution();
for (std::map<std::pair<unsigned int, unsigned int>, PenetrationLocator *>::iterator plit = penetration_locators->begin();
plit != penetration_locators->end();
++plit)
{
PenetrationLocator & pen_loc = *plit->second;
std::set<dof_id_type> & has_penetrated = pen_loc._has_penetrated;
bool frictional_contact_this_interaction = false;
std::map<std::pair<int,int>,InteractionParams>::iterator ipit;
std::pair<int,int> ms_pair(pen_loc._master_boundary,pen_loc._slave_boundary);
ipit = _interaction_params.find(ms_pair);
if (ipit != _interaction_params.end())
frictional_contact_this_interaction = true;
if (frictional_contact_this_interaction)
{
InteractionParams & interaction_params = ipit->second;
Real slip_factor = interaction_params._slip_factor;
Real slip_too_far_factor = interaction_params._slip_too_far_factor;
Real friction_coefficient = interaction_params._friction_coefficient;
std::vector<dof_id_type> & slave_nodes = pen_loc._nearest_node._slave_nodes;
for (unsigned int i=0; i<slave_nodes.size(); i++)
{
dof_id_type slave_node_num = slave_nodes[i];
if (pen_loc._penetration_info[slave_node_num])
{
PenetrationInfo & info = *pen_loc._penetration_info[slave_node_num];
const Node * node = info._node;
if (node->processor_id() == processor_id())
{
std::set<dof_id_type>::iterator hpit = has_penetrated.find(slave_node_num);
if (hpit != has_penetrated.end())
{
_num_contact_nodes++;
VectorValue<dof_id_type> residual_dofs(node->dof_number(aux_sys.number(), residual_x_var->number(), 0),
node->dof_number(aux_sys.number(), residual_y_var->number(), 0),
(residual_z_var ? node->dof_number(aux_sys.number(), residual_z_var->number(), 0) : 0));
VectorValue<dof_id_type> diag_stiff_dofs(node->dof_number(aux_sys.number(), diag_stiff_x_var->number(), 0),
node->dof_number(aux_sys.number(), diag_stiff_y_var->number(), 0),
(diag_stiff_z_var ? node->dof_number(aux_sys.number(), diag_stiff_z_var->number(), 0) : 0));
VectorValue<dof_id_type> inc_slip_dofs(node->dof_number(aux_sys.number(), inc_slip_x_var->number(), 0),
node->dof_number(aux_sys.number(), inc_slip_y_var->number(), 0),
(inc_slip_z_var ? node->dof_number(aux_sys.number(), inc_slip_z_var->number(), 0) : 0));
RealVectorValue res_vec;
RealVectorValue stiff_vec;
RealVectorValue slip_inc_vec;
for (unsigned int i=0; i<dim; ++i)
{
res_vec(i) = aux_solution(residual_dofs(i));
stiff_vec(i) = aux_solution(diag_stiff_dofs(i));
slip_inc_vec(i) = aux_solution(inc_slip_dofs(i));
}
RealVectorValue slip_iterative(0.0,0.0,0.0);
Real interaction_slip_residual = 0.0;
// _console<<"inc slip: "<<slip_inc_vec<<std::endl;
// _console<<"info slip: "<<info._incremental_slip<<std::endl;
// ContactState state = calculateInteractionSlip(slip_iterative, interaction_slip_residual, info._normal, res_vec, info._incremental_slip, stiff_vec, friction_coefficient, slip_factor, slip_too_far_factor, dim);
ContactState state = calculateInteractionSlip(slip_iterative, interaction_slip_residual, info._normal, res_vec, slip_inc_vec, stiff_vec, friction_coefficient, slip_factor, slip_too_far_factor, dim);
// _console<<"iter slip: "<<slip_iterative<<std::endl;
_slip_residual += interaction_slip_residual*interaction_slip_residual;
if (state == SLIPPING || state == SLIPPED_TOO_FAR)
{
_num_slipping++;
if (state == SLIPPED_TOO_FAR)
_num_slipped_too_far++;
for (unsigned int i=0; i<dim; ++i)
{
SlipData sd(node,i,slip_iterative(i));
if (iterative_slip)
iterative_slip->push_back(sd);
_it_slip_norm += slip_iterative(i)*slip_iterative(i);
_inc_slip_norm += (slip_inc_vec(i)+slip_iterative(i))*(slip_inc_vec(i)+slip_iterative(i));
}
}
}
}
}
}
}
}
_communicator.sum(_num_contact_nodes);
_communicator.sum(_num_slipping);
_communicator.sum(_num_slipped_too_far);
_communicator.sum(_slip_residual);
_slip_residual = std::sqrt(_slip_residual);
_communicator.sum(_it_slip_norm);
_it_slip_norm = std::sqrt(_it_slip_norm);
_communicator.sum(_inc_slip_norm);
_inc_slip_norm = std::sqrt(_inc_slip_norm);
if (_num_slipping > 0)
updatedSolution = true;
}
return updatedSolution;
}
bool
FrictionalContactProblem::updateSolution(NumericVector<Number>& vec_solution, NumericVector<Number>& ghosted_solution)
{
bool solution_modified(false);
solution_modified |= enforceRateConstraint(vec_solution, ghosted_solution);
unsigned int nfc = numLocalFrictionalConstraints();
std::vector<SlipData> iterative_slip;
unsigned int dim = getNonlinearSystem().subproblem().mesh().dimension();
iterative_slip.reserve(nfc*dim);
if (_do_slip_update)
{
updateReferenceResidual();
updateContactReferenceResidual();
_console<<"Slip Update: "<<_num_slip_iterations<<std::endl;
_console<<"Iter #Cont #Slip #TooFar Slip resid Inc Slip It Slip"<<std::endl;
for (int i=0; i<_slip_updates_per_iter; i++)
{
_console<<std::left<<std::setw(6)<<i+1;
bool updated_this_iter = calculateSlip(ghosted_solution, &iterative_slip);
_console<<std::setw(10)<<_num_contact_nodes
<<std::setw(10)<<_num_slipping
<<std::setw(10)<<_num_slipped_too_far
<<std::setprecision(4)<<std::setw(12)<<_slip_residual
<<std::setw(12)<<_inc_slip_norm
<<std::setw(12)<<_it_slip_norm;
if (updated_this_iter)
{
if (_slip_residual < _target_contact_residual ||
_slip_residual < _target_relative_contact_residual*_refResidContact)
{
_console<<" Converged: Slip resid < tolerance, not applying this slip update"<<std::endl;
break;
}
else
{
_console<<std::endl;
applySlip(vec_solution, ghosted_solution, iterative_slip);
}
}
else
{
_console<<" Converged: No slipping nodes"<<std::endl;
break;
}
solution_modified |= updated_this_iter;
}
_num_slip_iterations++;
_do_slip_update = false;
_num_nl_its_since_contact_update = 0;
}
return solution_modified;
}
bool
FrictionalContactProblem::enforceRateConstraint(NumericVector<Number>& vec_solution, NumericVector<Number>& ghosted_solution)
{
NonlinearSystem & nonlinear_sys = getNonlinearSystem();
unsigned int dim = nonlinear_sys.subproblem().mesh().dimension();
_displaced_problem->updateMesh(ghosted_solution, *_aux.currentSolution());
MooseVariable * disp_x_var = &getVariable(0,_disp_x);
MooseVariable * disp_y_var = &getVariable(0,_disp_y);
MooseVariable * disp_z_var = NULL;
if (dim == 3)
disp_z_var = &getVariable(0,_disp_z);
bool updatedSolution = false;
if (getDisplacedProblem() && _interaction_params.size() > 0)
{
GeometricSearchData & displaced_geom_search_data = getDisplacedProblem()->geomSearchData();
std::map<std::pair<unsigned int, unsigned int>, PenetrationLocator *> * penetration_locators = &displaced_geom_search_data._penetration_locators;
for (std::map<std::pair<unsigned int, unsigned int>, PenetrationLocator *>::iterator plit = penetration_locators->begin();
plit != penetration_locators->end();
++plit)
{
PenetrationLocator & pen_loc = *plit->second;
std::set<dof_id_type> & has_penetrated = pen_loc._has_penetrated;
bool frictional_contact_this_interaction = false;
std::map<std::pair<int,int>,InteractionParams>::iterator ipit;
std::pair<int,int> ms_pair(pen_loc._master_boundary,pen_loc._slave_boundary);
ipit = _interaction_params.find(ms_pair);
if (ipit != _interaction_params.end())
frictional_contact_this_interaction = true;
if (frictional_contact_this_interaction)
{
std::vector<dof_id_type> & slave_nodes = pen_loc._nearest_node._slave_nodes;
for (unsigned int i=0; i<slave_nodes.size(); i++)
{
dof_id_type slave_node_num = slave_nodes[i];
if (pen_loc._penetration_info[slave_node_num])
{
PenetrationInfo & info = *pen_loc._penetration_info[slave_node_num];
std::set<dof_id_type>::iterator hpit = has_penetrated.find(slave_node_num);
if (hpit != has_penetrated.end())
{
// _console<<"Slave node: "<<slave_node_num<<std::endl;
const Node * node = info._node;
VectorValue<dof_id_type> solution_dofs(node->dof_number(nonlinear_sys.number(), disp_x_var->number(), 0),
node->dof_number(nonlinear_sys.number(), disp_y_var->number(), 0),
(disp_z_var ? node->dof_number(nonlinear_sys.number(), disp_z_var->number(), 0) : 0));
//Get old parametric coords from info
//get old element from info
//Apply current configuration to that element and find xyz coords of that point
//find xyz coords of current point from original coords and displacement vector
//calculate difference between those two point coordinates to get correction
// std::vector<Point>points(1);
// points[0] = info._starting_closest_point_ref;
// Elem *side = (info._starting_elem->build_side(info._starting_side_num,false)).release();
// FEBase &fe = *(pen_loc._fe[0]);
// fe.reinit(side, &points);
// RealVectorValue correction = starting_point[0] - current_coords;
// RealVectorValue current_coords = *node;
// RealVectorValue correction = info._closest_point - current_coords;
const Node & undisp_node = _mesh.node(node->id());
RealVectorValue solution = info._closest_point - undisp_node;
for (unsigned int i=0; i<dim; ++i)
{
// vec_solution.add(solution_dofs(i), correction(i));
vec_solution.set(solution_dofs(i), solution(i));
}
info._distance = 0.0;
}
}
}
}
updatedSolution = true;
}
vec_solution.close();
_communicator.max(updatedSolution);
if (updatedSolution)
{
ghosted_solution = vec_solution;
ghosted_solution.close();
}
}
return updatedSolution;
}
void
FrictionalContactProblem::updateIncrementalSlip()
{
AuxiliarySystem & aux_sys = getAuxiliarySystem();
NumericVector<Number> & aux_solution = aux_sys.solution();
MooseVariable * inc_slip_x_var = &getVariable(0,_inc_slip_x);
MooseVariable * inc_slip_y_var = &getVariable(0,_inc_slip_y);
MooseVariable * inc_slip_z_var = NULL;
unsigned int dim = getNonlinearSystem().subproblem().mesh().dimension();
if (dim == 3)
{
inc_slip_z_var = &getVariable(0,_inc_slip_z);
}
GeometricSearchData & displaced_geom_search_data = getDisplacedProblem()->geomSearchData();
std::map<std::pair<unsigned int, unsigned int>, PenetrationLocator *> * penetration_locators = &displaced_geom_search_data._penetration_locators;
for (std::map<std::pair<unsigned int, unsigned int>, PenetrationLocator *>::iterator plit = penetration_locators->begin();
plit != penetration_locators->end();
++plit)
{
PenetrationLocator & pen_loc = *plit->second;
bool frictional_contact_this_interaction = false;
std::map<std::pair<int,int>,InteractionParams>::iterator ipit;
std::pair<int,int> ms_pair(pen_loc._master_boundary,pen_loc._slave_boundary);
ipit = _interaction_params.find(ms_pair);
if (ipit != _interaction_params.end())
frictional_contact_this_interaction = true;
if (frictional_contact_this_interaction)
{
std::vector<dof_id_type> & slave_nodes = pen_loc._nearest_node._slave_nodes;
for (unsigned int i=0; i<slave_nodes.size(); i++)
{
dof_id_type slave_node_num = slave_nodes[i];
if (pen_loc._penetration_info[slave_node_num])
{
PenetrationInfo & info = *pen_loc._penetration_info[slave_node_num];
if (info.isCaptured())
{
const Node * node = info._node;
VectorValue<dof_id_type> inc_slip_dofs(node->dof_number(aux_sys.number(), inc_slip_x_var->number(), 0),
node->dof_number(aux_sys.number(), inc_slip_y_var->number(), 0),
(inc_slip_z_var ? node->dof_number(aux_sys.number(), inc_slip_z_var->number(), 0) : 0));
RealVectorValue inc_slip = info._incremental_slip;
for (unsigned int i=0; i<dim; ++i)
{
aux_solution.set(inc_slip_dofs(i), inc_slip(i));
}
}
}
}
}
}
aux_solution.close();
}
MooseNonlinearConvergenceReason
FrictionalContactProblem::checkNonlinearConvergence(std::string &msg,
const PetscInt it,
const Real xnorm,
const Real snorm,
const Real fnorm,
const Real rtol,
const Real stol,
const Real abstol,
const PetscInt nfuncs,
const PetscInt /*max_funcs*/,
const Real ref_resid,
const Real /*div_threshold*/)
{
Real my_max_funcs = std::numeric_limits<int>::max();
Real my_div_threshold = std::numeric_limits<Real>::max();
MooseNonlinearConvergenceReason reason = ReferenceResidualProblem::checkNonlinearConvergence(msg,
it,
xnorm,
snorm,
fnorm,
rtol,
stol,
abstol,
nfuncs,
my_max_funcs,
ref_resid,
my_div_threshold);
_refResidContact = ref_resid; //use initial residual if no reference variables are specified
updateContactReferenceResidual();
int min_nl_its_since_contact_update = 1;
++_num_nl_its_since_contact_update;
if ((reason > 0) || //converged
(reason == MOOSE_NONLINEAR_ITERATING && //iterating and converged within factor
(fnorm < abstol*_contact_slip_tol_factor ||
checkConvergenceIndividVars(fnorm, abstol*_contact_slip_tol_factor, rtol*_contact_slip_tol_factor, ref_resid))))
{
_console<<"Slip iteration "<<_num_slip_iterations<<" ";
if (_num_slip_iterations < _min_slip_iters)
{ //force another iteration, and do a slip update
reason = MOOSE_NONLINEAR_ITERATING;
_do_slip_update = true;
_console<<"Force slip update < min slip iterations"<<std::endl;
}
else if (_num_slip_iterations < _max_slip_iters)
{ //do a slip update if there is another iteration
if (_num_nl_its_since_contact_update >= min_nl_its_since_contact_update)
{
_do_slip_update = true;
NonlinearSystem & nonlinear_sys = getNonlinearSystem();
nonlinear_sys.update();
const NumericVector<Number>*& ghosted_solution = nonlinear_sys.currentSolution();
calculateSlip(*ghosted_solution, NULL); //Just to calculate slip residual
if (_slip_residual > _target_contact_residual &&
_slip_residual > _target_relative_contact_residual*_refResidContact)
{ //force it to keep iterating
reason = MOOSE_NONLINEAR_ITERATING;
_console<<"Force slip update slip_resid > target: "<<_slip_residual<<std::endl;
}
else
{
//_do_slip_update = false; //maybe we want to do this
_console<<"Not forcing slip update slip_resid <= target: "<<_slip_residual<<std::endl;
}
}
else
{
if (_slip_residual > _target_contact_residual &&
_slip_residual > _target_relative_contact_residual*_refResidContact)
{ //force it to keep iterating
reason = MOOSE_NONLINEAR_ITERATING;
_console<<"Forcing another nonlinear iteration before slip iteration: " <<_num_nl_its_since_contact_update <<std::endl;
}
}
}
else
{ //maxed out
_console<<"Max slip iterations"<<std::endl;
reason = MOOSE_DIVERGED_FUNCTION_COUNT;
}
}
return(reason);
}
void
FrictionalContactProblem::applySlip(NumericVector<Number>& vec_solution,
NumericVector<Number>& ghosted_solution,
std::vector<SlipData> & iterative_slip)
{
NonlinearSystem & nonlinear_sys = getNonlinearSystem();
unsigned int dim = nonlinear_sys.subproblem().mesh().dimension();
AuxiliarySystem & aux_sys = getAuxiliarySystem();
NumericVector<Number> & aux_solution = aux_sys.solution();
MooseVariable * disp_x_var = &getVariable(0,_disp_x);
MooseVariable * disp_y_var = &getVariable(0,_disp_y);
MooseVariable * disp_z_var = NULL;
MooseVariable * inc_slip_x_var = &getVariable(0,_inc_slip_x);
MooseVariable * inc_slip_y_var = &getVariable(0,_inc_slip_y);
MooseVariable * inc_slip_z_var = NULL;
if (dim == 3)
{
disp_z_var = &getVariable(0,_disp_z);
inc_slip_z_var = &getVariable(0,_inc_slip_z);
}
MooseVariable * disp_var;
MooseVariable * inc_slip_var;
for (unsigned int iislip=0; iislip<iterative_slip.size(); ++iislip)
{
const Node * node = iterative_slip[iislip]._node;
const unsigned int dof = iterative_slip[iislip]._dof;
const Real slip = iterative_slip[iislip]._slip;
if (dof == 0)
{
disp_var = disp_x_var;
inc_slip_var = inc_slip_x_var;
}
else if (dof == 1)
{
disp_var = disp_y_var;
inc_slip_var = inc_slip_y_var;
}
else
{
disp_var = disp_z_var;
inc_slip_var = inc_slip_z_var;
}
dof_id_type
solution_dof = node->dof_number(nonlinear_sys.number(), disp_var->number(), 0),
inc_slip_dof = node->dof_number(aux_sys.number(), inc_slip_var->number(), 0);
vec_solution.add(solution_dof, slip);
aux_solution.add(inc_slip_dof, slip);
}
aux_solution.close();
vec_solution.close();
unsigned int num_slipping_nodes = iterative_slip.size();
_communicator.sum(num_slipping_nodes);
if (num_slipping_nodes > 0)
{
ghosted_solution = vec_solution;
ghosted_solution.close();
updateContactPoints(ghosted_solution,false);
enforceRateConstraint(vec_solution, ghosted_solution);
}
}
FrictionalContactProblem::FrictionalContactProblem(const InputParameters & params) :
ReferenceResidualProblem(params),
_refResidContact(0.0),
_slip_residual(0.0),
_do_slip_update(false),
_num_slip_iterations(0),
_target_contact_residual(0.0),
_target_relative_contact_residual(0.0),
_num_nl_its_since_contact_update(0),
_num_contact_nodes(0),
_num_slipping(0),
_num_slipped_too_far(0),
_inc_slip_norm(0.0),
_it_slip_norm(0.0)
{
std::vector<int> master = params.get<std::vector<int> >("master");
std::vector<int> slave = params.get<std::vector<int> >("slave");
std::vector<Real> friction_coefficient = params.get<std::vector<Real> >("friction_coefficient");
std::vector<Real> slip_factor = params.get<std::vector<Real> >("slip_factor");
std::vector<Real> slip_too_far_factor = params.get<std::vector<Real> >("slip_too_far_factor");
unsigned int dim = getNonlinearSystem().subproblem().mesh().dimension();
_disp_x = params.get<NonlinearVariableName>("disp_x");
_residual_x = params.get<AuxVariableName>("residual_x");
_diag_stiff_x = params.get<AuxVariableName>("diag_stiff_x");
_inc_slip_x = params.get<AuxVariableName>("inc_slip_x");
_disp_y = params.get<NonlinearVariableName>("disp_y");
_residual_y = params.get<AuxVariableName>("residual_y");
_diag_stiff_y = params.get<AuxVariableName>("diag_stiff_y");
_inc_slip_y = params.get<AuxVariableName>("inc_slip_y");
if (dim == 3)
{
if (!params.isParamValid("disp_z"))
mooseError("Missing disp_z in FrictionalContactProblem");
if (!params.isParamValid("residual_z"))
mooseError("Missing residual_z in FrictionalContactProblem");
if (!params.isParamValid("diag_stiff_z"))
mooseError("Missing diag_stiff_z in FrictionalContactProblem");
if (!params.isParamValid("inc_slip_z"))
mooseError("Missing inc_slip_z in FrictionalContactProblem");
_disp_z = params.get<NonlinearVariableName>("disp_z");
_residual_z = params.get<AuxVariableName>("residual_z");
_diag_stiff_z = params.get<AuxVariableName>("diag_stiff_z");
_inc_slip_z = params.get<AuxVariableName>("inc_slip_z");
}
unsigned int num_interactions = master.size();
if (num_interactions != slave.size())
mooseError("Sizes of master surface and slave surface lists must match in FrictionalContactProblem");
if (num_interactions != friction_coefficient.size())
mooseError("Must have friction coefficient defined for every interaction in FrictionalContactProblem");
if (num_interactions != slip_factor.size())
mooseError("Must have slip factor defined for every interaction in FrictionalContactProblem");
if (num_interactions != slip_too_far_factor.size())
mooseError("Must have slip too far factor defined for every interaction in FrictionalContactProblem");
for (unsigned int i=0; i<master.size(); ++i)
{
std::pair<int,int> ms_pair(master[i],slave[i]);
InteractionParams ip;
ip._friction_coefficient = friction_coefficient[i];
ip._slip_factor = slip_factor[i];
ip._slip_too_far_factor = slip_too_far_factor[i];
_interaction_params[ms_pair] = ip;
}
_min_slip_iters = params.get<int>("minimum_slip_iterations");
_max_slip_iters = params.get<int>("maximum_slip_iterations");
_slip_updates_per_iter = params.get<int>("slip_updates_per_iteration");
bool have_target = false;
bool have_target_relative = false;
if (params.isParamValid("target_contact_residual"))
{
_target_contact_residual = params.get<Real>("target_contact_residual");
have_target = true;
}
if (params.isParamValid("target_relative_contact_residual"))
{
_target_relative_contact_residual = params.get<Real>("target_relative_contact_residual");
have_target_relative = true;
}
if (!(have_target || have_target_relative))
mooseError("Must specify either target_contact_residual or target_relative_contact_residual");
_contact_slip_tol_factor = params.get<Real>("contact_slip_tolerance_factor");
if (params.isParamValid("contact_reference_residual_variables"))
_contactRefResidVarNames = params.get<std::vector<std::string> >("contact_reference_residual_variables");
}
MooseNonlinearConvergenceReason
ReferenceResidualProblem::checkNonlinearConvergence(std::string &msg,
const PetscInt it,
const Real xnorm,
const Real snorm,
const Real fnorm,
const Real rtol,
const Real stol,
const Real abstol,
const PetscInt nfuncs,
const PetscInt max_funcs,
const Real ref_resid,
const Real /*div_threshold*/)
{
updateReferenceResidual();
if (_solnVars.size() > 0)
{
_console<<"Solution, reference convergence variable norms:"<<std::endl;
unsigned int maxwsv=0;
unsigned int maxwrv=0;
for (unsigned int i=0; i<_solnVars.size(); ++i)
{
if (_solnVarNames[i].size() > maxwsv)
maxwsv = _solnVarNames[i].size();
if (_refResidVarNames[i].size() > maxwrv)
maxwrv = _refResidVarNames[i].size();
}
for (unsigned int i=0; i<_solnVars.size(); ++i)
{
_console<<std::setw(maxwsv+2)<<std::left<<_solnVarNames[i]+":"<<_resid[i]<<" "<<std::setw(maxwrv+2)<<_refResidVarNames[i]+":"<<_refResid[i]<<std::endl;
}
}
NonlinearSystem & system = getNonlinearSystem();
MooseNonlinearConvergenceReason reason = MOOSE_NONLINEAR_ITERATING;
std::stringstream oss;
if (fnorm != fnorm)
{
oss << "Failed to converge, function norm is NaN\n";
reason = MOOSE_DIVERGED_FNORM_NAN;
}
else if (fnorm < abstol)
{
oss << "Converged due to function norm " << fnorm << " < " << abstol << std::endl;
reason = MOOSE_CONVERGED_FNORM_ABS;
}
else if (nfuncs >= max_funcs)
{
oss << "Exceeded maximum number of function evaluations: " << nfuncs << " > " << max_funcs << std::endl;
reason = MOOSE_DIVERGED_FUNCTION_COUNT;
}
if (it && !reason)
{
if (checkConvergenceIndividVars(fnorm, abstol, rtol, ref_resid))
{
if (_resid.size() > 0)
oss << "Converged due to function norm " << " < " << " (relative tolerance) or (absolute tolerance) for all solution variables" << std::endl;
else
oss << "Converged due to function norm " << fnorm << " < " << " (relative tolerance)" << std::endl;
reason = MOOSE_CONVERGED_FNORM_RELATIVE;
}
else if (it >= _accept_iters && checkConvergenceIndividVars(fnorm, abstol*_accept_mult, rtol*_accept_mult, ref_resid))
{
if (_resid.size() > 0)
oss << "Converged due to function norm " << " < " << " (acceptable relative tolerance) or (acceptable absolute tolerance) for all solution variables" << std::endl;
else
oss << "Converged due to function norm " << fnorm << " < " << " (acceptable relative tolerance)" << std::endl;
_console<<"ACCEPTABLE"<<std::endl;
reason = MOOSE_CONVERGED_FNORM_RELATIVE;
}
else if (snorm < stol*xnorm)
{
oss << "Converged due to small update length: " << snorm << " < " << stol << " * " << xnorm << std::endl;
reason = MOOSE_CONVERGED_SNORM_RELATIVE;
}
}
system._last_nl_rnorm = fnorm;
system._current_nl_its = static_cast<unsigned int>(it);
msg = oss.str();
// _console<<msg<<std::endl; //Print convergence diagnostic message
return(reason);
}