sfem::utility Namespace Reference

the namespace of the module sfem_utility More...

Functions
tmath::sparse::SparseMatrix	AssembleBlock (const tmath::sparse::SparseMatrix &A, const tmath::Matrix B, const tmath::Matrix &C, const tmath::Matrix &D)
void	createHexaeder27from8 (unsigned int index, const std::string &type, sfem::mesh::MeshPart &part0, const std::vector< unsigned int > &e_nodes, const double tolerance=1e-10)
	creates a 27-nodes hexahedron This method helps to create a 27-noded hexahedron given the data that are required to build up a 8-nodes hexahedron. The mid-edge nodes will be created automatically (if not yet existing in the instance) and appended to the instance's node vector.
void	createTetraeder10from4 (unsigned int index, const std::string &type, sfem::mesh::MeshPart &part0, const std::vector< unsigned int > &e_nodes, const double tolerance=1e-10)
	creates a 10-nodes tetrahedron This method helps to create a 10-noded tetrahedron given the data that are required to build up a 4-nodes tetraedron. The mid-edge nodes will be created automatically (if not yet existing in the instance) and appended to the instance's node vector.
unsigned int	createUniquePoint (sfem::mesh::MeshPart &part0, const double *coor, const double tolerance=1e-10)
	checks existence of a point, creates it and returns the point index The method checks if a point with given coordinates already exists. If yes it returns the point's index, if not it creates a new point and returns its index.
tmath::sparse::SparseMatrix	SmoothingFilter (const tmath::sparse::SparseMatrix &M)

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Detailed Description

the namespace of the module sfem_utility

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Function Documentation

tmath::sparse::SparseMatrix sfem::utility::AssembleBlock	(	const tmath::sparse::SparseMatrix &	A,
		const tmath::Matrix	B,
		const tmath::Matrix &	C,
		const tmath::Matrix &	D
	)

Assembles a sparse matrix from given matrix blocks The blocks are A, B, C, D with A sparse and B, C, D dense. They are set according to [[A,B][C,D]]

void sfem::utility::createHexaeder27from8	(	unsigned int	index,
		const std::string &	type,
		sfem::mesh::MeshPart &	part0,
		const std::vector< unsigned int > &	e_nodes,
		const double	tolerance = 1e-10
	)

creates a 27-nodes hexahedron This method helps to create a 27-noded hexahedron given the data that are required to build up a 8-nodes hexahedron. The mid-edge nodes will be created automatically (if not yet existing in the instance) and appended to the instance's node vector.

Parameters:

	index	element index in given instance
	type	element type given as string
	part0	the instance where the element is to be created
	e_nodes	the vector of node indices of the corresponding 8-noded base type
	tolerance	a tolerance identifying two points being equal

void sfem::utility::createTetraeder10from4	(	unsigned int	index,
		const std::string &	type,
		sfem::mesh::MeshPart &	part0,
		const std::vector< unsigned int > &	e_nodes,
		const double	tolerance = 1e-10
	)

creates a 10-nodes tetrahedron This method helps to create a 10-noded tetrahedron given the data that are required to build up a 4-nodes tetraedron. The mid-edge nodes will be created automatically (if not yet existing in the instance) and appended to the instance's node vector.

Parameters:

	index	element index in given instance
	type	element type given as string
	part0	the instance where the element is to be created
	e_nodes	the vector of node indices of the corresponding 4-noded base type
	tolerance	a tolerance identifying two points being equal

unsigned int sfem::utility::createUniquePoint	(	sfem::mesh::MeshPart &	part0,
		const double *	coor,
		const double	tolerance = 1e-10
	)

checks existence of a point, creates it and returns the point index The method checks if a point with given coordinates already exists. If yes it returns the point's index, if not it creates a new point and returns its index.

Parameters:

	part0	the instance to be modified
	coor	the 3d coordinates
	tolerance	a tolerance identifying two points being equal

tmath::sparse::SparseMatrix sfem::utility::SmoothingFilter

(

const tmath::sparse::SparseMatrix &

M

)

Creates a smoothing filter matrix. It denotes the weight matrix W_AB=M_AB/N_A whereby N_A is the sum of the A-th column of M_AB