PolyFEM
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polyfem::assembler::LinearAssembler Class Referenceabstract

assemble matrix based on the local assembler local assembler is eg Laplace, LinearElasticity etc More...

#include <Assembler.hpp>

Inheritance diagram for polyfem::assembler::LinearAssembler:
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Collaboration diagram for polyfem::assembler::LinearAssembler:
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Public Member Functions

 LinearAssembler ()
 
virtual ~LinearAssembler ()=default
 
void assemble (const bool is_volume, const int n_basis, const std::vector< basis::ElementBases > &bases, const std::vector< basis::ElementBases > &gbases, const AssemblyValsCache &cache, const double t, StiffnessMatrix &stiffness, const bool is_mass=false) const override
 assembles the stiffness matrix for the given basis the bilinear form (local assembler) is encoded by the overloaded assemble (see below) function that the subclass (eg Laplacian) defines sets stiffness and modifies cache if it has not already been computed
 
virtual bool is_linear () const override
 
virtual Eigen::Matrix< double, Eigen::Dynamic, 1, 0, 9, 1 > assemble (const LinearAssemblerData &data) const =0
 local assembly function that defines the bilinear form (LHS) computes and returns a single local stiffness value
 
- Public Member Functions inherited from polyfem::assembler::Assembler
virtual ~Assembler ()=default
 
virtual std::string name () const =0
 
int size () const
 
virtual void set_size (const int size)
 
virtual double assemble_energy (const bool is_volume, const std::vector< basis::ElementBases > &bases, const std::vector< basis::ElementBases > &gbases, const AssemblyValsCache &cache, const double t, const double dt, const Eigen::MatrixXd &displacement, const Eigen::MatrixXd &displacement_prev) const
 
virtual Eigen::VectorXd assemble_energy_per_element (const bool is_volume, const std::vector< basis::ElementBases > &bases, const std::vector< basis::ElementBases > &gbases, const AssemblyValsCache &cache, const double t, const double dt, const Eigen::MatrixXd &displacement, const Eigen::MatrixXd &displacement_prev) const
 
virtual void assemble_gradient (const bool is_volume, const int n_basis, const std::vector< basis::ElementBases > &bases, const std::vector< basis::ElementBases > &gbases, const AssemblyValsCache &cache, const double t, const double dt, const Eigen::MatrixXd &displacement, const Eigen::MatrixXd &displacement_prev, Eigen::MatrixXd &rhs) const
 
virtual void assemble_hessian (const bool is_volume, const int n_basis, const bool project_to_psd, const std::vector< basis::ElementBases > &bases, const std::vector< basis::ElementBases > &gbases, const AssemblyValsCache &cache, const double t, const double dt, const Eigen::MatrixXd &displacement, const Eigen::MatrixXd &displacement_prev, utils::MatrixCache &mat_cache, StiffnessMatrix &grad) const
 
virtual void compute_scalar_value (const OutputData &data, std::vector< NamedMatrix > &result) const
 
virtual void compute_tensor_value (const OutputData &data, std::vector< NamedMatrix > &result) const
 
virtual void compute_stiffness_value (const double t, const assembler::ElementAssemblyValues &vals, const Eigen::MatrixXd &local_pts, const Eigen::MatrixXd &displacement, Eigen::MatrixXd &tensor) const
 
virtual void compute_dstress_dmu_dlambda (const OptAssemblerData &data, Eigen::MatrixXd &dstress_dmu, Eigen::MatrixXd &dstress_dlambda) const
 
virtual void compute_stress_grad_multiply_mat (const OptAssemblerData &data, const Eigen::MatrixXd &mat, Eigen::MatrixXd &stress, Eigen::MatrixXd &result) const
 
virtual void compute_stress_grad_multiply_stress (const OptAssemblerData &data, Eigen::MatrixXd &stress, Eigen::MatrixXd &result) const
 
virtual void compute_stress_grad_multiply_vect (const OptAssemblerData &data, const Eigen::MatrixXd &vect, Eigen::MatrixXd &stress, Eigen::MatrixXd &result) const
 
virtual void compute_stress_grad (const OptAssemblerData &data, const Eigen::MatrixXd &prev_grad_u_i, Eigen::MatrixXd &stress, Eigen::MatrixXd &result) const
 
virtual void compute_stress_prev_grad (const OptAssemblerData &data, const Eigen::MatrixXd &prev_grad_u_i, Eigen::MatrixXd &result) const
 
virtual std::map< std::string, ParamFunc > parameters () const =0
 
virtual VectorNd compute_rhs (const AutodiffHessianPt &pt) const
 
virtual Eigen::Matrix< AutodiffScalarGrad, Eigen::Dynamic, 1, 0, 3, 1 > kernel (const int dim, const AutodiffGradPt &rvect, const AutodiffScalarGrad &r) const
 
void set_materials (const std::vector< int > &body_ids, const json &body_params, const Units &units)
 
virtual void add_multimaterial (const int index, const json &params, const Units &units)
 
virtual void update_lame_params (const Eigen::MatrixXd &lambdas, const Eigen::MatrixXd &mus)
 
virtual bool is_solution_displacement () const
 
virtual bool is_fluid () const
 
virtual bool is_tensor () const
 

Additional Inherited Members

- Public Types inherited from polyfem::assembler::Assembler
typedef std::pair< std::string, Eigen::MatrixXd > NamedMatrix
 
typedef std::function< double(const RowVectorNd &, const RowVectorNd &, double, int)> ParamFunc
 
- Protected Attributes inherited from polyfem::assembler::Assembler
int size_ = -1
 

Detailed Description

assemble matrix based on the local assembler local assembler is eg Laplace, LinearElasticity etc

Definition at line 208 of file Assembler.hpp.

Constructor & Destructor Documentation

◆ LinearAssembler()

polyfem::assembler::LinearAssembler::LinearAssembler ( )

Definition at line 153 of file Assembler.cpp.

◆ ~LinearAssembler()

virtual polyfem::assembler::LinearAssembler::~LinearAssembler ( )
virtualdefault

Member Function Documentation

◆ assemble() [1/2]

void polyfem::assembler::LinearAssembler::assemble ( const bool  is_volume,
const int  n_basis,
const std::vector< basis::ElementBases > &  bases,
const std::vector< basis::ElementBases > &  gbases,
const AssemblyValsCache &  cache,
const double  t,
StiffnessMatrix &  stiffness,
const bool  is_mass = false 
) const
overridevirtual

assembles the stiffness matrix for the given basis the bilinear form (local assembler) is encoded by the overloaded assemble (see below) function that the subclass (eg Laplacian) defines sets stiffness and modifies cache if it has not already been computed

Reimplemented from polyfem::assembler::Assembler.

Reimplemented in polyfem::assembler::LinearElasticity, polyfem::assembler::Mass, polyfem::assembler::StokesVelocity, and polyfem::assembler::StokesPressure.

Referenced by polyfem::basis::RBFWithQuadratic::compute_constraints_matrix_2d(), polyfem::basis::RBFWithQuadraticLagrange::compute_constraints_matrix_2d(), and polyfem::basis::PolygonalBasis2d::compute_integral_constraints().

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◆ assemble() [2/2]

virtual Eigen::Matrix< double, Eigen::Dynamic, 1, 0, 9, 1 > polyfem::assembler::LinearAssembler::assemble ( const LinearAssemblerData &  data) const
pure virtual

local assembly function that defines the bilinear form (LHS) computes and returns a single local stiffness value

Implemented in polyfem::assembler::BilaplacianMain, polyfem::assembler::BilaplacianAux, polyfem::assembler::Helmholtz, polyfem::assembler::HookeLinearElasticity, polyfem::assembler::IncompressibleLinearElasticityDispacement, polyfem::assembler::IncompressibleLinearElasticityPressure, polyfem::assembler::Laplacian, polyfem::assembler::LinearElasticity, polyfem::assembler::Mass, polyfem::assembler::StokesVelocity, polyfem::assembler::StokesPressure, polyfem::assembler::BilaplacianMain, polyfem::assembler::BilaplacianAux, polyfem::assembler::Helmholtz, polyfem::assembler::HookeLinearElasticity, polyfem::assembler::IncompressibleLinearElasticityDispacement, polyfem::assembler::IncompressibleLinearElasticityPressure, polyfem::assembler::Laplacian, polyfem::assembler::LinearElasticity, polyfem::assembler::Mass, polyfem::assembler::StokesVelocity, and polyfem::assembler::StokesPressure.

◆ is_linear()

virtual bool polyfem::assembler::LinearAssembler::is_linear ( ) const
inlineoverridevirtual

Implements polyfem::assembler::Assembler.

Reimplemented in polyfem::assembler::HookeLinearElasticity, and polyfem::assembler::LinearElasticity.

Definition at line 230 of file Assembler.hpp.

The documentation for this class was generated from the following files: