v0.14.0
Public Member Functions | Public Attributes | Private Attributes | List of all members
SphericalArcLengthControl Struct Reference

Implementation of spherical arc-length method. More...

#include <users_modules/basic_finite_elements/src/ArcLengthTools.hpp>

Inheritance diagram for SphericalArcLengthControl:
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Collaboration diagram for SphericalArcLengthControl:
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Public Member Functions

DEPRECATED SphericalArcLengthControl (ArcLengthCtx *arc_ptr_raw)
 
 SphericalArcLengthControl (boost::shared_ptr< ArcLengthCtx > &arc_ptr)
 
virtual ~SphericalArcLengthControl ()
 
MoFEMErrorCode preProcess ()
 
MoFEMErrorCode operator() ()
 
MoFEMErrorCode postProcess ()
 
virtual double calculateLambdaInt ()
 Calculate f_lambda(dx,lambda) More...
 
virtual MoFEMErrorCode calculateDb ()
 Calculate db. More...
 
virtual MoFEMErrorCode calculateDxAndDlambda (Vec x)
 
virtual MoFEMErrorCode calculateInitDlambda (double *dlambda)
 
virtual MoFEMErrorCode setDlambdaToX (Vec x, double dlambda)
 

Public Attributes

ArcLengthCtx * arcPtrRaw
 

Private Attributes

boost::shared_ptr< ArcLengthCtx > arcPtr
 

Detailed Description

Implementation of spherical arc-length method.

\[ \alpha \| \Delta\mathbf{x} \|^2 + \Delta\lambda^2 \beta^2 \| \mathbf{F}_\lambda \|^2 = s^2 \]

This is particular implementation of ArcLength control, i.e. spherical arc length control. If beta is set to 0 and alpha is non-zero it is cylindrical arc-length control. Works well with general problem with non-linear geometry. It not guarantee dissipative loading path in case of physical nonlinearities.

Definition at line 374 of file ArcLengthTools.hpp.

Constructor & Destructor Documentation

◆ SphericalArcLengthControl() [1/2]

SphericalArcLengthControl::SphericalArcLengthControl ( ArcLengthCtx *  arc_ptr_raw)
Deprecated:
use constructor with shared_ptr

Definition at line 661 of file ArcLengthTools.cpp.

662  : FEMethod(), arcPtrRaw(arc_ptr_raw) {}

◆ SphericalArcLengthControl() [2/2]

SphericalArcLengthControl::SphericalArcLengthControl ( boost::shared_ptr< ArcLengthCtx > &  arc_ptr)

Definition at line 664 of file ArcLengthTools.cpp.

666  : FEMethod(), arcPtrRaw(arc_ptr.get()), arcPtr(arc_ptr) {}

◆ ~SphericalArcLengthControl()

SphericalArcLengthControl::~SphericalArcLengthControl ( )
virtual

Definition at line 668 of file ArcLengthTools.cpp.

668 {}

Member Function Documentation

◆ calculateDb()

MoFEMErrorCode SphericalArcLengthControl::calculateDb ( )
virtual

Calculate db.

\[ \textrm{d}\mathbf{b} = 2 \alpha \Delta\mathbf{x} \]

Definition at line 691 of file ArcLengthTools.cpp.

691  {
692  MoFEMFunctionBegin;
693  CHKERR VecCopy(arcPtrRaw->dx, arcPtrRaw->db);
694  CHKERR VecScale(arcPtrRaw->db, 2 * arcPtrRaw->alpha);
695  MoFEMFunctionReturn(0);
696 }

◆ calculateDxAndDlambda()

MoFEMErrorCode SphericalArcLengthControl::calculateDxAndDlambda ( Vec  x)
virtual

Definition at line 742 of file ArcLengthTools.cpp.

742  {
743  ArcFunctionBegin;
744  // dx
745  CHKERR VecCopy(x, arcPtrRaw->dx);
746  CHKERR VecAXPY(arcPtrRaw->dx, -1, arcPtrRaw->x0);
747  CHKERR VecGhostUpdateBegin(arcPtrRaw->dx, INSERT_VALUES, SCATTER_FORWARD);
748  CHKERR VecGhostUpdateEnd(arcPtrRaw->dx, INSERT_VALUES, SCATTER_FORWARD);
749  // dlambda
750  if (arcPtrRaw->getPetscLocalDofIdx() != -1) {
751  double *array;
752  CHKERR VecGetArray(arcPtrRaw->dx, &array);
753  arcPtrRaw->dLambda = array[arcPtrRaw->getPetscLocalDofIdx()];
754  array[arcPtrRaw->getPetscLocalDofIdx()] = 0;
755  CHKERR VecRestoreArray(arcPtrRaw->dx, &array);
756  }
757  CHKERR VecGhostUpdateBegin(arcPtrRaw->ghosTdLambda, INSERT_VALUES,
758  SCATTER_FORWARD);
759  CHKERR VecGhostUpdateEnd(arcPtrRaw->ghosTdLambda, INSERT_VALUES,
760  SCATTER_FORWARD);
761  // dx2
762  CHKERR VecDot(arcPtrRaw->dx, arcPtrRaw->dx, &arcPtrRaw->dx2);
763  MOFEM_LOG_C("WORLD", Sev::verbose, "\tdlambda = %6.4e dx2 = %6.4e\n",
764  arcPtrRaw->dLambda, arcPtrRaw->dx2);
765  MoFEMFunctionReturn(0);
766 }

◆ calculateInitDlambda()

MoFEMErrorCode SphericalArcLengthControl::calculateInitDlambda ( double *  dlambda)
virtual

Definition at line 769 of file ArcLengthTools.cpp.

769  {
770  ArcFunctionBegin;
771  *dlambda = std::sqrt(pow(arcPtrRaw->s, 2) /
772  (pow(arcPtrRaw->beta, 2) * arcPtrRaw->F_lambda2));
773  if (!(*dlambda == *dlambda)) {
774  MOFEM_LOG("WORLD", Sev::error)
775  << "s " << arcPtrRaw->s << " " << arcPtrRaw->beta << " "
776  << arcPtrRaw->F_lambda2;
777  SETERRQ(PETSC_COMM_SELF, MOFEM_IMPOSSIBLE_CASE,
778  "Increment of lambda is not a number");
779  }
780  MoFEMFunctionReturn(0);
781 }

◆ calculateLambdaInt()

double SphericalArcLengthControl::calculateLambdaInt ( )
virtual

Calculate f_lambda(dx,lambda)

\[ f_\lambda(\Delta\mathbf{x},\lambda) = \alpha \| \Delta\mathbf{x} \|^2 + \Delta\lambda^2 \beta^2 \| \mathbf{F}_\lambda \|^2 \]

Definition at line 685 of file ArcLengthTools.cpp.

685  {
686  return arcPtrRaw->alpha * arcPtrRaw->dx2 + pow(arcPtrRaw->dLambda, 2) *
687  pow(arcPtrRaw->beta, 2) *
688  arcPtrRaw->F_lambda2;
689 }

◆ operator()()

MoFEMErrorCode SphericalArcLengthControl::operator() ( )

Definition at line 698 of file ArcLengthTools.cpp.

698  {
699  ArcFunctionBegin;
700  switch (snes_ctx) {
701  case CTX_SNESSETFUNCTION: {
702  arcPtrRaw->res_lambda = calculateLambdaInt() - pow(arcPtrRaw->s, 2);
703  CHKERR VecSetValue(snes_f, arcPtrRaw->getPetscGlobalDofIdx(),
704  arcPtrRaw->res_lambda, ADD_VALUES);
705  MOFEM_LOG_C("WORLD", Sev::verbose, "\tres_lambda = %6.4e\n",
706  arcPtrRaw->res_lambda);
707  } break;
708  case CTX_SNESSETJACOBIAN: {
709  arcPtrRaw->dIag =
710  2 * arcPtrRaw->dLambda * pow(arcPtrRaw->beta, 2) * arcPtrRaw->F_lambda2;
711  CHKERR MatSetValue(snes_B, arcPtrRaw->getPetscGlobalDofIdx(),
712  arcPtrRaw->getPetscGlobalDofIdx(), 1, ADD_VALUES);
713  } break;
714  default:
715  break;
716  }
717  MoFEMFunctionReturn(0);
718 }

◆ postProcess()

MoFEMErrorCode SphericalArcLengthControl::postProcess ( )

Definition at line 720 of file ArcLengthTools.cpp.

720  {
721  ArcFunctionBegin;
722  switch (snes_ctx) {
723  case CTX_SNESSETFUNCTION: {
724  MOFEM_LOG_C("WORLD", Sev::verbose, "\tlambda = %6.4e\n",
725  arcPtrRaw->getFieldData());
726  } break;
727  case CTX_SNESSETJACOBIAN: {
728  CHKERR VecGhostUpdateBegin(arcPtrRaw->ghostDiag, INSERT_VALUES,
729  SCATTER_FORWARD);
730  CHKERR VecGhostUpdateEnd(arcPtrRaw->ghostDiag, INSERT_VALUES,
731  SCATTER_FORWARD);
732  CHKERR MatAssemblyBegin(snes_B, MAT_FLUSH_ASSEMBLY);
733  CHKERR MatAssemblyEnd(snes_B, MAT_FLUSH_ASSEMBLY);
734  MOFEM_LOG_C("WORLD", Sev::verbose, "\tdiag = %6.4e", arcPtrRaw->dIag);
735  } break;
736  default:
737  break;
738  }
739  MoFEMFunctionReturn(0);
740 }

◆ preProcess()

MoFEMErrorCode SphericalArcLengthControl::preProcess ( )

Definition at line 670 of file ArcLengthTools.cpp.

670  {
671  MoFEMFunctionBegin;
672  switch (snes_ctx) {
673  case CTX_SNESSETFUNCTION: {
674  CHKERR calculateDxAndDlambda(snes_x);
675  CHKERR calculateDb();
676  } break;
677  case CTX_SNESSETJACOBIAN: {
678  } break;
679  default:
680  break;
681  }
682  MoFEMFunctionReturn(0);
683 }

◆ setDlambdaToX()

MoFEMErrorCode SphericalArcLengthControl::setDlambdaToX ( Vec  x,
double  dlambda 
)
virtual

Definition at line 783 of file ArcLengthTools.cpp.

783  {
784  ArcFunctionBegin;
785  // check if local dof idx is non zero, i.e. that lambda is accessible from
786  // this processor
787  if (arcPtrRaw->getPetscLocalDofIdx() != -1) {
788  double *array;
789  CHKERR VecGetArray(x, &array);
790  double lambda_old = array[arcPtrRaw->getPetscLocalDofIdx()];
791  if (!(dlambda == dlambda)) {
792  MOFEM_LOG("WORLD", Sev::error)
793  << "s " << arcPtrRaw->s << " " << arcPtrRaw->beta << " "
794  << arcPtrRaw->F_lambda2;
795  SETERRQ(PETSC_COMM_SELF, MOFEM_IMPOSSIBLE_CASE,
796  "Increment of lambda is not a number");
797  }
798  array[arcPtrRaw->getPetscLocalDofIdx()] = lambda_old + dlambda;
799  MOFEM_LOG_C("WORLD", Sev::verbose, "\tlambda = %6.4e, %6.4e (%6.4e)\n",
800  lambda_old, array[arcPtrRaw->getPetscLocalDofIdx()], dlambda);
801  CHKERR VecRestoreArray(x, &array);
802  }
803  MoFEMFunctionReturn(0);
804 }

Member Data Documentation

◆ arcPtr

boost::shared_ptr<ArcLengthCtx> SphericalArcLengthControl::arcPtr
private

Definition at line 412 of file ArcLengthTools.hpp.

◆ arcPtrRaw

ArcLengthCtx* SphericalArcLengthControl::arcPtrRaw

Definition at line 376 of file ArcLengthTools.hpp.

The documentation for this struct was generated from the following files:
ArcLengthCtx::res_lambda
double res_lambda
f_lambda - s
Definition: ArcLengthTools.hpp:82
ArcLengthCtx::getFieldData
FieldData & getFieldData()
Get value of load factor.
Definition: ArcLengthTools.hpp:117
SphericalArcLengthControl::calculateLambdaInt
virtual double calculateLambdaInt()
Calculate f_lambda(dx,lambda)
Definition: ArcLengthTools.cpp:685
ArcFunctionBegin
#define ArcFunctionBegin
Definition: ArcLengthTools.cpp:13
MoFEM::FEMethod
structure for User Loop Methods on finite elements
Definition: LoopMethods.hpp:369
ArcLengthCtx::db
SmartPetscObj< Vec > db
db derivative of f(dx*dx), i.e. db = d[ f(dx*dx) ]/dx
Definition: ArcLengthTools.hpp:85
ArcLengthCtx::dLambda
double dLambda
increment of load factor
Definition: ArcLengthTools.hpp:76
ArcLengthCtx::getPetscGlobalDofIdx
DofIdx getPetscGlobalDofIdx()
Get global index of load factor.
Definition: ArcLengthTools.hpp:107
ArcLengthCtx::beta
double beta
force scaling factor
Definition: ArcLengthTools.hpp:72
MOFEM_IMPOSSIBLE_CASE
@ MOFEM_IMPOSSIBLE_CASE
Definition: definitions.h:35
ArcLengthCtx::alpha
double alpha
displacement scaling factor
Definition: ArcLengthTools.hpp:73
ArcLengthCtx::dx2
double dx2
inner_prod(dX,dX)
Definition: ArcLengthTools.hpp:80
CHKERR
#define CHKERR
Inline error check.
Definition: definitions.h:548
SphericalArcLengthControl::calculateDxAndDlambda
virtual MoFEMErrorCode calculateDxAndDlambda(Vec x)
Definition: ArcLengthTools.cpp:742
MOFEM_LOG_C
#define MOFEM_LOG_C(channel, severity, format,...)
Definition: LogManager.hpp:311
SphericalArcLengthControl::arcPtrRaw
ArcLengthCtx * arcPtrRaw
Definition: ArcLengthTools.hpp:376
ArcLengthCtx::x0
SmartPetscObj< Vec > x0
displacement vector at beginning of step
Definition: ArcLengthTools.hpp:87
ArcLengthCtx::F_lambda2
double F_lambda2
inner_prod(F_lambda,F_lambda);
Definition: ArcLengthTools.hpp:81
ArcLengthCtx::dx
SmartPetscObj< Vec > dx
dx = x-x0
Definition: ArcLengthTools.hpp:88
ArcLengthCtx::getPetscLocalDofIdx
DofIdx getPetscLocalDofIdx()
Get local index of load factor.
Definition: ArcLengthTools.hpp:113
ArcLengthCtx::dIag
double dIag
diagonal value
Definition: ArcLengthTools.hpp:78
ArcLengthCtx::ghostDiag
SmartPetscObj< Vec > ghostDiag
Definition: ArcLengthTools.hpp:77
MOFEM_LOG
#define MOFEM_LOG(channel, severity)
Log.
Definition: LogManager.hpp:308
SphericalArcLengthControl::arcPtr
boost::shared_ptr< ArcLengthCtx > arcPtr
Definition: ArcLengthTools.hpp:412
ArcLengthCtx::ghosTdLambda
SmartPetscObj< Vec > ghosTdLambda
Definition: ArcLengthTools.hpp:75
ArcLengthCtx::s
double s
arc length radius
Definition: ArcLengthTools.hpp:71
MoFEMFunctionReturn
#define MoFEMFunctionReturn(a)
Last executable line of each PETSc function used for error handling. Replaces return()
Definition: definitions.h:429
SphericalArcLengthControl::calculateDb
virtual MoFEMErrorCode calculateDb()
Calculate db.
Definition: ArcLengthTools.cpp:691
MoFEMFunctionBegin
#define MoFEMFunctionBegin
First executable line of each MoFEM function, used for error handling. Final line of MoFEM functions ...
Definition: definitions.h:359
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