entityload Class Reference

#include <entityload.h>

Public Member Functions
loadel *	edge2loadel (selement &el, long prop, snode nodes, long edgid, long nedgid)
	function returns pointer to a new loadel structure with edge load created from the given entity load, element and edge property id
	entityload ()
long	getval (snode &tn, double *nv)
	function computes values of the entity load at the given node
long	read (XFILE in, long lc, long slc)
	funtion reads entity load from the opened text file
loadel *	surface2loadel (selement &el, long prop, snode nodes, long surfid, long nsurfid)
	function returns pointer to a new loadel structure with surface load created from the given entity load, element and surface property id
void	var2coord (Equation *eq, long &var_x, long &var_y, long &var_z)
	function returns indeces of x, y and z coordinate parameters in the load function
loadel *	vol2loadel (selement &el, long prop, snode *nodes)
	function returns pointer to a new loadel structure with volume load created from the given entity load, element and volume property id
	~entityload ()
Public Attributes
generalfunct	ft
	type of load function
Equation **	func
	array of pointers to parsed functions in case of load defined by function on the edge
long	lgcs
	coordinate system on edge (local=1, global=2)
long	ncomp
	number of load components (directions)
long	nlc
	load case number
long	nslc
	subload case number
char **	tfunc
	array of function defintion strings in case of load defined by function on the edge
double *	val
	load values in case of constant load

Detailed Description

This class is used for entity load in the mechprep preprocessor. Entity load can be defined either as constant load or by parser function. The parser function has to be defined with three parameters for x, y, z coordinate in order to compute load values for given nodal coordinates.

Definition at line 18 of file entityload.h.

Constructor & Destructor Documentation

entityload ( )

This constructor initializes data to the zero values

Definition at line 13 of file entityload.cpp.

References ft, func, lgcs, ncomp, nlc, stat, tfunc, and val.

~entityload ( )

This destructor deallocates used memory

Definition at line 29 of file entityload.cpp.

References func, ncomp, tfunc, and val.

Member Function Documentation

loadel * edge2loadel	(	selement &	el,
		long	prop,
		snode *	nodes,
		long *	edgid,
		long	nedgid
	)

function returns pointer to a new loadel structure with edge load created from the given entity load, element and edge property id

The function creates new object of the loadel type which contains edge loads generated for given element and its edges with given property.

Parameters:

	el	- element whose edge load will be generated
	prop	- edge property id of the element el where the edge load will be applied
	nodes	- array with node structures
	edgid	- array with edge indeces for the given property number prop detected on additional edges
	nedgid	- the length of array edgid

Returns:: The function returns pointer to the new allocated object of the loadel type.

Created by Tomas Koudelka, 06.2009 Modified by Tomas Koudelka, 08.2011

Definition at line 238 of file entityload.cpp.

References edge, getval(), loadel::le, lgcs, memset(), ncomp, loadel::ned, nlc, loadel::nlc, loadel::nned, loadel::nnve, loadel::nodvale, and loadel::tel.

Referenced by input_elem_loadedge().

long getval	(	snode &	tn,
		double *	nv
	)

function computes values of the entity load at the given node

This function approximates values on the loaded entity to the element node which lay on it. It is used linear approximation.

Parameters:

	tn	- node where the load should be approximated
	nv	- array with approximated nodal values

Return values:

	0	- on succes
	1	- in case of unknown type of load function

Definition at line 187 of file entityload.cpp.

References QList< type >::at(), Equation::Evaluate(), ft, func, ncomp, pars, stat, val, variable::Value, var2coord(), and Equation::Variables.

Referenced by edge2loadel(), surface2loadel(), and vol2loadel().

long read	(	XFILE *	in,
		long	lc,
		long *	slc = `NULL`
	)

funtion reads entity load from the opened text file

This function reads data about entity load from the text file given by the parameter in

Parameters:

	in	- pointer to the opned text file
	lc	- total number of load cases
	slc	- pointer to array with number of subloadcases for particular load cases, default value is NULL

Return values:

	0	- on succes
	1	- unsupported function type is required
	2	- invalid type of load coordinate system
	3	- function has insufficient number of parameters
	4	- wrong name of function parameters

Definition at line 60 of file entityload.cpp.

References ft, func, generalfunct_kwdset(), lgcs, memset(), ncomp, nlc, nslc, pars, stat, Parser::TextToTree(), tfunc, val, var2coord(), and xfscanf().

Referenced by input_elem_loadedge(), input_elem_loadsurf(), and input_elem_loadvol().

loadel * surface2loadel	(	selement &	el,
		long	prop,
		snode *	nodes,
		long *	surfid,
		long	nsurfid
	)

function returns pointer to a new loadel structure with surface load created from the given entity load, element and surface property id

The function creates new object of the loadel type which contains surface loads generated for given element and its surfaces with given property.

Parameters:

	el	- element whose surface load will be generated
	prop	- surface property id of the element el where the surface load will be applied
	nodes	- array with node structures
	surfid	- array with surface indeces for the given property number prop detected on additional surfaces
	nsurfid	- the length of array surf

Returns:: The function returns pointer to the new allocated object of the loadel type.

Created by Tomas Koudelka, 06.2009 Modified by Tomas Koudelka, 08.2011

Definition at line 342 of file entityload.cpp.

References getval(), lgcs, loadel::ls, memset(), ncomp, nlc, loadel::nlc, loadel::nnsurf, loadel::nnvs, loadel::nodvals, loadel::nsurf, surface, and loadel::tel.

Referenced by input_elem_loadsurf().

void var2coord	(	Equation *	eq,
		long &	var_x,
		long &	var_y,
		long &	var_z
	)

function returns indeces of x, y and z coordinate parameters in the load function

The function returns indeces of 'x' parameter, 'y' parameter and 'z' parameter of the function defined in eq. Performed comparison is case insesitive.

Parameters:

	eq	- pointer to the parsed function
	var_x	- index of x-coordinate (used by eq->Variables.at function)
	var_y	- index of y-coordinate (used by eq->Variables.at function)
	var_z	- index of z-coordinate (used by eq->Variables.at function)

Returns:: Indeces are returned via parameters var_x, var_y, var_z. Negative value of the index is returned in case that it is not found.

Definition at line 126 of file entityload.cpp.

References QList< type >::at(), variable::Name, and Equation::Variables.

Referenced by getval(), and read().

loadel * vol2loadel	(	selement &	el,
		long	prop,
		snode *	nodes
	)

function returns pointer to a new loadel structure with volume load created from the given entity load, element and volume property id

The function creates new object of the loadel type which contains volume loads generated for given element and its volume with given property.

Parameters:

	el	- element whose volume load will be generated
	prop	- surface property id of the element el where the volume load will be applied
	nodes	- array with node structures