FrontISTR 5.2.0
Large-scale structural analysis program with finit element method
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m_fstr_nonlinearmethod Module Reference

This module provides functions on nonlinear analysis. More...

Functions/Subroutines

subroutine fstr_newton (cstep, hecmesh, hecmat, fstrsolid, fstrparam, restrt_step_num, sub_step, ctime, dtime)
 This subroutine solve nonlinear solid mechanics problems by Newton-Raphson method.
 
subroutine fstr_newton_contactalag (cstep, hecmesh, hecmat, fstrsolid, fstrparam, restart_step_num, restart_substep_num, sub_step, ctime, dtime, infoctchange)
 This subroutine solve nonlinear solid mechanics problems by Newton-Raphson method combined with Nested iteration of augmentation calculation as suggested by Simo & Laursen (Compu & Struct, Vol42, pp97-116, 1992 )
 
subroutine fstr_newton_contactslag (cstep, hecmesh, hecmat, fstrsolid, fstrparam, fstrmat, restart_step_num, restart_substep_num, sub_step, ctime, dtime, infoctchange, conmat)
 This subroutine solve nonlinear solid mechanics problems by Newton-Raphson method. Standard Lagrange multiplier algorithm for contact analysis is incoluded in this subroutine.
 

Detailed Description

This module provides functions on nonlinear analysis.

Function/Subroutine Documentation

◆ fstr_newton()

subroutine m_fstr_nonlinearmethod::fstr_newton ( integer, intent(in)  cstep,
type (hecmwst_local_mesh hecmesh,
type (hecmwst_matrix hecmat,
type (fstr_solid fstrsolid,
type (fstr_param fstrparam,
integer(kind=kint)  restrt_step_num,
integer, intent(in)  sub_step,
real(kind=kreal), intent(in)  ctime,
real(kind=kreal), intent(in)  dtime 
)

This subroutine solve nonlinear solid mechanics problems by Newton-Raphson method.

Parameters
[in]cstepcurrent loading step
hecmeshhecmw mesh
hecmathecmw matrix
fstrsolidfstr_solid
[in]sub_stepsubstep number of current loading step
[in]ctimecurrent time
[in]dtimetime increment
fstrparamtype fstr_param

Definition at line 29 of file fstr_solve_NonLinear.f90.

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◆ fstr_newton_contactalag()

subroutine m_fstr_nonlinearmethod::fstr_newton_contactalag ( integer, intent(in)  cstep,
type (hecmwst_local_mesh hecmesh,
type (hecmwst_matrix hecmat,
type (fstr_solid fstrsolid,
type (fstr_param fstrparam,
integer(kind=kint)  restart_step_num,
integer(kind=kint)  restart_substep_num,
integer, intent(in)  sub_step,
real(kind=kreal), intent(in)  ctime,
real(kind=kreal), intent(in)  dtime,
type (fstr_info_contactchange infoctchange 
)

This subroutine solve nonlinear solid mechanics problems by Newton-Raphson method combined with Nested iteration of augmentation calculation as suggested by Simo & Laursen (Compu & Struct, Vol42, pp97-116, 1992 )

Parameters
[in]cstepcurrent loading step
hecmeshhecmw mesh
hecmathecmw matrix
fstrsolidfstr_solid
[in]sub_stepsubstep number of current loading step
[in]ctimecurrent time
[in]dtimetime increment
fstrparamtype fstr_param
infoctchangefstr_info_contactChange

Definition at line 182 of file fstr_solve_NonLinear.f90.

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◆ fstr_newton_contactslag()

subroutine m_fstr_nonlinearmethod::fstr_newton_contactslag ( integer, intent(in)  cstep,
type (hecmwst_local_mesh hecmesh,
type (hecmwst_matrix hecmat,
type (fstr_solid fstrsolid,
type (fstr_param fstrparam,
type (fstrst_matrix_contact_lagrange fstrmat,
integer(kind=kint)  restart_step_num,
integer(kind=kint)  restart_substep_num,
integer, intent(in)  sub_step,
real(kind=kreal), intent(in)  ctime,
real(kind=kreal), intent(in)  dtime,
type (fstr_info_contactchange infoctchange,
type (hecmwst_matrix), optional  conmat 
)

This subroutine solve nonlinear solid mechanics problems by Newton-Raphson method. Standard Lagrange multiplier algorithm for contact analysis is incoluded in this subroutine.

Parameters
[in]cstepcurrent loading step
hecmeshhecmw mesh
hecmathecmw matrix
fstrsolidfstr_solid
[in]sub_stepsubstep number of current loading step
[in]ctimecurrent time
[in]dtimetime increment
fstrparamtype fstr_param
infoctchangefstr_info_contactChange
fstrmattype fstrST_matrix_contact_lagrange

Definition at line 412 of file fstr_solve_NonLinear.f90.

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