Model representation in Getfem. More...

#include "getfem_generic_assembly.h"
#include "getfem_assembling.h"
#include "getfem_partial_mesh_fem.h"
#include "getfem_im_data.h"

Go to the source code of this file.

Classes
class	getfem::model
	`‘Model’' variables store the variables, the data and the description of a model. More...

class	getfem::virtual_time_scheme
	The time integration scheme object provides the necessary methods for the model object to apply a time integration scheme to an evolutionnary problem. More...

class	getfem::virtual_dispatcher
	The time dispatcher object modify the result of a brick in order to apply a time integration scheme. More...

class	getfem::virtual_brick
	The virtual brick has to be derived to describe real model bricks. More...

Namespaces
	getfem
	GEneric Tool for Finite Element Methods.

Typedefs
typedef std::shared_ptr< const virtual_brick >	getfem::pbrick
	type of pointer on a brick

Functions
bool	getfem::is_old (const std::string &name)
	Does the variable have Old_ prefix.

std::string	getfem::no_old_prefix_name (const std::string &name)
	Strip the variable name from prefix Old_ if it has one.

void APIDECL	getfem::add_theta_method_dispatcher (model &md, dal::bit_vector ibricks, const std::string &THETA)
	Add a theta-method time dispatcher to a list of bricks. More...

void APIDECL	getfem::velocity_update_for_order_two_theta_method (model &md, const std::string &U, const std::string &V, const std::string &pdt, const std::string &ptheta)
	Function which udpate the velocity $v^{n+1}$ after the computation of the displacement $u^{n+1}$ and before the next iteration. More...

void APIDECL	getfem::add_midpoint_dispatcher (model &md, dal::bit_vector ibricks)
	Add a midpoint time dispatcher to a list of bricks. More...

void APIDECL	getfem::velocity_update_for_Newmark_scheme (model &md, size_type id2dt2b, const std::string &U, const std::string &V, const std::string &pdt, const std::string &ptwobeta, const std::string &pgamma)
	Function which udpate the velocity $v^{n+1}$ after the computation of the displacement $u^{n+1}$ and before the next iteration. More...

size_type APIDECL	getfem::add_linear_term (model &md, const mesh_im &mim, const std::string &expr, size_type region=size_type(-1), bool is_sym=false, bool is_coercive=false, const std::string &brickname="", bool return_if_nonlin=false)
	Add a term given by the weak form language expression `expr` which will be assembled in region `region` and with the integration method `mim`. More...

size_type APIDECL	getfem::add_nonlinear_term (model &md, const mesh_im &mim, const std::string &expr, size_type region=size_type(-1), bool is_sym=false, bool is_coercive=false, const std::string &brickname="")
	Add a nonlinear term given by the weak form language expression `expr` which will be assembled in region `region` and with the integration method `mim`. More...

size_type APIDECL	getfem::add_source_term (model &md, const mesh_im &mim, const std::string &expr, size_type region=size_type(-1), const std::string &brickname=std::string(), const std::string &directvarname=std::string(), const std::string &directdataname=std::string(), bool return_if_nonlin=false)
	Add a source term given by the assembly string `expr` which will be assembled in region `region` and with the integration method `mim`. More...

size_type APIDECL	getfem::add_linear_twodomain_term (model &md, const mesh_im &mim, const std::string &expr, size_type region, const std::string &secondary_domain, bool is_sym=false, bool is_coercive=false, const std::string &brickname="", bool return_if_nonlin=false)
	Adds a linear term given by a weak form language expression like `add_linear_term` function but for an integration on a direct product of two domains, a first specfied by `mim` and `region` and a second one by `secondary_domain` which has to be declared first into the model.

size_type APIDECL	getfem::add_nonlinear_twodomain_term (model &md, const mesh_im &mim, const std::string &expr, size_type region, const std::string &secondary_domain, bool is_sym=false, bool is_coercive=false, const std::string &brickname="")
	Adds a nonlinear term given by a weak form language expression like `add_nonlinear_term` function but for an integration on a direct product of two domains, a first specfied by `mim` and `region` and a second one by `secondary_domain` which has to be declared first into the model.

size_type APIDECL	getfem::add_twodomain_source_term (model &md, const mesh_im &mim, const std::string &expr, size_type region, const std::string &secondary_domain, const std::string &brickname=std::string(), const std::string &directvarname=std::string(), const std::string &directdataname=std::string(), bool return_if_nonlin=false)
	Adds a source term given by a weak form language expression like `add_source_term` function but for an integration on a direct product of two domains, a first specfied by `mim` and `region` and a second one by `secondary_domain` which has to be declared first into the model.

size_type APIDECL	getfem::add_Laplacian_brick (model &md, const mesh_im &mim, const std::string &varname, size_type region=size_type(-1))
	Add a Laplacian term on the variable `varname` (in fact with a minus : :math:`-\text{div}(\nabla u)`). More...

size_type APIDECL	getfem::add_generic_elliptic_brick (model &md, const mesh_im &mim, const std::string &varname, const std::string &dataexpr, size_type region=size_type(-1))
	Add an elliptic term on the variable `varname`. More...

size_type APIDECL	getfem::add_source_term_brick (model &md, const mesh_im &mim, const std::string &varname, const std::string &dataexpr, size_type region=size_type(-1), const std::string &directdataname=std::string())
	Add a source term on the variable `varname`. More...

size_type APIDECL	getfem::add_normal_source_term_brick (model &md, const mesh_im &mim, const std::string &varname, const std::string &dataexpr, size_type region)
	Add a source term on the variable `varname` on a boundary `region`. More...

size_type APIDECL	getfem::add_Dirichlet_condition_with_simplification (model &md, const std::string &varname, size_type region, const std::string &dataname=std::string())
	Add a (simple) Dirichlet condition on the variable `varname` and the mesh region `region`. More...

size_type APIDECL	getfem::add_Dirichlet_condition_with_multipliers (model &md, const mesh_im &mim, const std::string &varname, const std::string &multname, size_type region, const std::string &dataname=std::string())
	Add a Dirichlet condition on the variable `varname` and the mesh region `region`. More...

size_type APIDECL	getfem::add_Dirichlet_condition_with_multipliers (model &md, const mesh_im &mim, const std::string &varname, const mesh_fem &mf_mult, size_type region, const std::string &dataname=std::string())
	Same function as the previous one but the multipliers variable will be declared to the brick by the function. More...

size_type APIDECL	getfem::add_Dirichlet_condition_with_multipliers (model &md, const mesh_im &mim, const std::string &varname, dim_type degree, size_type region, const std::string &dataname=std::string())
	Same function as the previous one but the `mf_mult` parameter is replaced by `degree`. More...

const APIDECL std::string &	getfem::mult_varname_Dirichlet (model &md, size_type ind_brick)
	When `ind_brick` is the index of a Dirichlet brick with multiplier on the model `md`, the function return the name of the multiplier variable. More...

size_type APIDECL	getfem::add_Dirichlet_condition_with_penalization (model &md, const mesh_im &mim, const std::string &varname, scalar_type penalization_coeff, size_type region, const std::string &dataname=std::string(), const mesh_fem *mf_mult=0)
	Add a Dirichlet condition on the variable `varname` and the mesh region `region`. More...

size_type APIDECL	getfem::add_Dirichlet_condition_with_Nitsche_method (model &md, const mesh_im &mim, const std::string &varname, const std::string &Neumannterm, const std::string &datagamma0, size_type region, scalar_type theta=scalar_type(0), const std::string &datag=std::string())
	Add a Dirichlet condition on the variable `varname` and the mesh region `region`. More...

size_type APIDECL	getfem::add_normal_Dirichlet_condition_with_multipliers (model &md, const mesh_im &mim, const std::string &varname, const std::string &multname, size_type region, const std::string &dataname=std::string())
	Add a Dirichlet condition to the normal component of the vector (or tensor) valued variable `varname` and the mesh region `region`. More...

size_type APIDECL	getfem::add_normal_Dirichlet_condition_with_multipliers (model &md, const mesh_im &mim, const std::string &varname, const mesh_fem &mf_mult, size_type region, const std::string &dataname=std::string())
	Same function as the previous one but the multipliers variable will be declared to the brick by the function. More...

size_type APIDECL	getfem::add_normal_Dirichlet_condition_with_multipliers (model &md, const mesh_im &mim, const std::string &varname, dim_type degree, size_type region, const std::string &dataname=std::string())
	Same function as the previous one but the `mf_mult` parameter is replaced by `degree`. More...

size_type APIDECL	getfem::add_normal_Dirichlet_condition_with_penalization (model &md, const mesh_im &mim, const std::string &varname, scalar_type penalization_coeff, size_type region, const std::string &dataname=std::string(), const mesh_fem *mf_mult=0)
	Add a Dirichlet condition to the normal component of the vector (or tensor) valued variable `varname` and the mesh region `region`. More...

size_type APIDECL	getfem::add_normal_Dirichlet_condition_with_Nitsche_method (model &md, const mesh_im &mim, const std::string &varname, const std::string &Neumannterm, const std::string &datagamma0, size_type region, scalar_type theta=scalar_type(0), const std::string &datag=std::string())
	Add a Dirichlet condition on the normal component of the variable `varname` and the mesh region `region`. More...

size_type APIDECL	getfem::add_pointwise_constraints_with_penalization (model &md, const std::string &varname, scalar_type penalisation_coeff, const std::string &dataname_pt, const std::string &dataname_unitv=std::string(), const std::string &dataname_val=std::string())
	Add some pointwise constraints on the variable `varname` thanks to a penalization. More...

size_type APIDECL	getfem::add_pointwise_constraints_with_given_multipliers (model &md, const std::string &varname, const std::string &multname, const std::string &dataname_pt, const std::string &dataname_unitv=std::string(), const std::string &dataname_val=std::string())
	Add some pointwise constraints on the variable `varname` using a given multiplier `multname`. More...

size_type APIDECL	getfem::add_pointwise_constraints_with_multipliers (model &md, const std::string &varname, const std::string &dataname_pt, const std::string &dataname_unitv=std::string(), const std::string &dataname_val=std::string())
	Add some pointwise constraints on the variable `varname` using multiplier. More...

void APIDECL	getfem::change_penalization_coeff (model &md, size_type ind_brick, scalar_type penalisation_coeff)
	Change the penalization coefficient of a Dirichlet condition with penalization brick. More...

size_type APIDECL	getfem::add_generalized_Dirichlet_condition_with_multipliers (model &md, const mesh_im &mim, const std::string &varname, const std::string &multname, size_type region, const std::string &dataname, const std::string &Hname)
	Add a generalized Dirichlet condition on the variable `varname` and the mesh region `region`. More...

size_type APIDECL	getfem::add_generalized_Dirichlet_condition_with_multipliers (model &md, const mesh_im &mim, const std::string &varname, const mesh_fem &mf_mult, size_type region, const std::string &dataname, const std::string &Hname)
	Same function as the preceeding one but the multipliers variable will be declared to the brick by the function. More...

size_type APIDECL	getfem::add_generalized_Dirichlet_condition_with_multipliers (model &md, const mesh_im &mim, const std::string &varname, dim_type degree, size_type region, const std::string &dataname, const std::string &Hname)
	Same function as the preceeding one but the `mf_mult` parameter is replaced by `degree`. More...

size_type APIDECL	getfem::add_generalized_Dirichlet_condition_with_penalization (model &md, const mesh_im &mim, const std::string &varname, scalar_type penalization_coeff, size_type region, const std::string &dataname, const std::string &Hname, const mesh_fem *mf_mult=0)
	Add a Dirichlet condition on the variable `varname` and the mesh region `region`. More...

size_type APIDECL	getfem::add_generalized_Dirichlet_condition_with_Nitsche_method (model &md, const mesh_im &mim, const std::string &varname, const std::string &Neumannterm, const std::string &datagamma0, size_type region, scalar_type theta, const std::string &datag, const std::string &dataH)
	Add a Dirichlet condition on the variable `varname` and the mesh region `region`. More...

size_type APIDECL	getfem::add_Helmholtz_brick (model &md, const mesh_im &mim, const std::string &varname, const std::string &dataexpr, size_type region=size_type(-1))
	Add a Helmoltz brick to the model. More...

size_type APIDECL	getfem::add_Fourier_Robin_brick (model &md, const mesh_im &mim, const std::string &varname, const std::string &dataexpr, size_type region)
	Add a Fourier-Robin brick to the model. More...

template<typename VECT >
void	getfem::set_private_data_rhs (model &md, size_type indbrick, const VECT &L)
	For some specific bricks having an internal right hand side vector (explicit bricks: 'constraint brick' and 'explicit rhs brick'), set this rhs.

template<typename MAT >
void	getfem::set_private_data_matrix (model &md, size_type indbrick, const MAT &B)
	For some specific bricks having an internal sparse matrix (explicit bricks: 'constraint brick' and 'explicit matrix brick'), set this matrix. More...

template<typename MAT , typename VECT >
size_type	getfem::add_constraint_with_penalization (model &md, const std::string &varname, scalar_type penalisation_coeff, const MAT &B, const VECT &L)
	Add an additional explicit penalized constraint on the variable `varname`. More...

template<typename MAT , typename VECT >
size_type	getfem::add_constraint_with_multipliers (model &md, const std::string &varname, const std::string &multname, const MAT &B, const VECT &L)
	Add an additional explicit constraint on the variable `varname` thank to a multiplier `multname` peviously added to the model (should be a fixed size variable). More...

template<typename MAT >
size_type	getfem::add_explicit_matrix (model &md, const std::string &varname1, const std::string &varname2, const MAT &B, bool issymmetric=false, bool iscoercive=false)
	Add a brick reprenting an explicit matrix to be added to the tangent linear system relatively to the variables 'varname1' and 'varname2'. More...

template<typename VECT >
size_type	getfem::add_explicit_rhs (model &md, const std::string &varname, const VECT &L)
	Add a brick representing an explicit right hand side to be added to the right hand side of the tangent linear system relatively to the variable 'varname'. More...

size_type APIDECL	getfem::add_isotropic_linearized_elasticity_brick (model &md, const mesh_im &mim, const std::string &varname, const std::string &dataname_lambda, const std::string &dataname_mu, size_type region=size_type(-1), const std::string &dataname_preconstraint=std::string())
	Linear elasticity brick ( $\int \sigma(u):\varepsilon(v)$ ). More...

size_type APIDECL	getfem::add_isotropic_linearized_elasticity_pstrain_brick (model &md, const mesh_im &mim, const std::string &varname, const std::string &data_E, const std::string &data_nu, size_type region)
	Linear elasticity brick ( $\int \sigma(u):\varepsilon(v)$ ). More...

size_type APIDECL	getfem::add_isotropic_linearized_elasticity_pstress_brick (model &md, const mesh_im &mim, const std::string &varname, const std::string &data_E, const std::string &data_nu, size_type region)
	Linear elasticity brick ( $\int \sigma(u):\varepsilon(v)$ ). More...

template<class VECTVM >
void	getfem::compute_isotropic_linearized_Von_Mises_or_Tresca (model &md, const std::string &varname, const std::string &dataname_lambda, const std::string &dataname_mu, const mesh_fem &mf_vm, VECTVM &VM, bool tresca)
	Compute the Von-Mises stress or the Tresca stress of a field (only valid for isotropic linearized elasticity in 3D) Parametrized by Lame coefficients.

void APIDECL	getfem::compute_isotropic_linearized_Von_Mises_pstrain (model &md, const std::string &varname, const std::string &data_E, const std::string &data_nu, const mesh_fem &mf_vm, model_real_plain_vector &VM)
	Compute the Von-Mises stress of a displacement field for isotropic linearized elasticity in 3D or in 2D with plane strain assumption. More...

void APIDECL	getfem::compute_isotropic_linearized_Von_Mises_pstress (model &md, const std::string &varname, const std::string &data_E, const std::string &data_nu, const mesh_fem &mf_vm, model_real_plain_vector &VM)
	Compute the Von-Mises stress of a displacement field for isotropic linearized elasticity in 3D or in 2D with plane stress assumption. More...

size_type APIDECL	getfem::add_linear_incompressibility (model &md, const mesh_im &mim, const std::string &varname, const std::string &multname_pressure, size_type region=size_type(-1), const std::string &dataexpr_penal_coeff=std::string())
	Mixed linear incompressibility condition brick. More...

size_type APIDECL	getfem::add_mass_brick (model &md, const mesh_im &mim, const std::string &varname, const std::string &dataexpr_rho=std::string(), size_type region=size_type(-1))
	Mass brick ( $\int \rho u.v$ ). More...

size_type APIDECL	getfem::add_lumped_mass_for_first_order_brick (model &md, const mesh_im &mim, const std::string &varname, const std::string &dataexpr_rho=std::string(), size_type region=size_type(-1))
	Lumped mass brick for first order. More...

size_type APIDECL	getfem::add_basic_d_on_dt_brick (model &md, const mesh_im &mim, const std::string &varname, const std::string &dataname_dt, const std::string &dataname_rho=std::string(), size_type region=size_type(-1))
	Basic d/dt brick ( $\int \rho ((u^{n+1}-u^n)/dt).v$ ). More...

size_type APIDECL	getfem::add_basic_d2_on_dt2_brick (model &md, const mesh_im &mim, const std::string &varnameU, const std::string &datanameV, const std::string &dataname_dt, const std::string &dataname_alpha, const std::string &dataname_rho=std::string(), size_type region=size_type(-1))
	Basic d2/dt2 brick ( $\int \rho ((u^{n+1}-u^n)/(\alpha dt^2) - v^n/(\alpha dt) ).w$ ). More...

Variables
const auto	getfem::PREFIX_OLD = std::string{"Old_"}
	A prefix to refer to the previous version of a variable.

Detailed Description

Model representation in Getfem.

Author: Yves Renard Yves..nosp@m.Rena.nosp@m.rd@in.nosp@m.sa-l.nosp@m.yon.f.nosp@m.r

Date: March 21, 2009.

Definition in file getfem_models.h.

Classes

Namespaces

Typedefs

Functions

Variables

Detailed Description