springel Class Reference

#include <springel.h>

Public Member Functions
long	give_ndofe (long eid)
void	inicipval (long eid, long ri, long ci, matrix &nodval, inictype *ictn)
void	internal_forces (long lcid, long eid, long ri, long ci, vector &ifor)
void	intpointval (long eid, vector &nodval, vector &ipval)
void	mass_matrix (long eid, matrix &mm)
void	res_internal_forces (long lcid, long eid, vector &ifor)
void	res_stiffness_matrix (long eid, matrix &sm)
	springel (void)
void	stiffness_matrix (long eid, long ri, long ci, matrix &sm)
void	strains (long eid, long lcid)
void	stresses (long eid, long lcid)
	~springel (void)
Public Attributes
long *	cncomp
	array containing cumulative numbers of components of stress and strain tensors
long	intordmm
	order of integration of mass matrix
long **	intordsm
	order of integration of stiffness matrix
long	napfun
	number of approximated functions on the element
long	nb
	number of blocks
long *	ncomp
	array containing numbers of components of stress and strain tensors
long	ndofe
	number of DOFs on the element
long **	nip
	array of numbers of integration points in blocks
long	nne
	number of nodes on one element
strastrestate	ssst
	stress/strain state
long	tncomp
	total number of components of the strain and stress tensors
long	tnip
	total number of integration points on element

Detailed Description

CLASS SPRINGEL This class defines special type of onedimensional element which is used as spring support in the different directions. The direction of the support is given by the element type and can be one of these :

created by Tomas Koudelka, koudelka@cml.fsv.cvut.cz,18.9.2002

Definition at line 20 of file springel.h.

Constructor & Destructor Documentation

springel ( void )

The constructor inializes attributes to zero values and allocates internal data arrays.

Created by Tomas Koudelka, 12.8.2001

Definition at line 18 of file springel.cpp.

References bar, cncomp, intordsm, napfun, nb, ncomp, ndofe, nip, nne, ssst, tncomp, and tnip.

~springel ( void )

The destructor is defined only for the formal purposes.

Created by Tomas Koudelka, 12.8.2001

Definition at line 53 of file springel.cpp.

References cncomp, intordsm, nb, ncomp, and nip.

Member Function Documentation

long give_ndofe ( long eid )

The function returns correct number of dofs on the spring for given element eid and also setups ndofe attribute to this value.

Parameters:

eid

- element id

Returns:: The function returns number of DOFs.

Created by Tomas Koudelka, 12.8.2001

This function returns correct number of dofs on the spring for given element eid and also setups ndofe attribute to this value.

Definition at line 82 of file springel.cpp.

References enodes, gtopology::gelements, mechtop::give_elemnodes(), gtopology::give_ndofe(), mechtop::give_ndofn(), gtopology::give_nne(), Gtm, Mt, and gelement::ndofe.

Referenced by mechtop::give_ndofe().

void inicipval	(	long	eid,
		long	ri,
		long	ci,
		matrix &	nodval,
		inictype *	ictn
	)			`[inline]`

Definition at line 33 of file springel.h.

References matrix::n.

Referenced by mechbclc::inicipval().

void internal_forces	(	long	lcid,
		long	eid,
		long	ri,
		long	ci,
		vector &	ifor
	)

The function computes internal forces of given block.

Parameters:

	lcid	- load case id
	eid	- element id
	ri	- block row id
	ci	- block column id
	ifor	- vector of internal forces

Returns:: The function returns vector of internal forces in the parameter ifor

Created by Tomas Koudelka, 12.8.2001

This function computes internal forces of given block.

Parameters:

	lcid	- load case id
	eid	- element id
	ri	- block row id
	ci	- block column id
	ifor	- vector of internal forces

12.8.2001

Definition at line 265 of file springel.cpp.

References mechmat::computenlstresses(), mechtop::elements, fillv(), mechmat::givestress(), element::ipp, Mm, Mp, Mt, spring_1, spring_2, spring_3, spring_4, spring_5, spring_6, probdesc::strcomp, and element::te.

Referenced by res_internal_forces().

void intpointval	(	long	eid,
		vector &	nodval,
		vector &	ipval
	)

Function interpolates the nodal values to the integration points on the element.

Parameters:

	eid	- element id
	nodval	- array of nodal values
	ipval	- array of values at integration points

Returns:: The function returns vector of interpolated values in the parameter ipval

Created by Tomas Koudelka, 12.8.2001

Definition at line 354 of file springel.cpp.

References copyv().

Referenced by elem_intpointval(), and elem_intpointval2().

void mass_matrix	(	long	eid,
		matrix &	mm
	)

The function computes mass matrix of given element.

Parameters:

	eid	- element id.
	mm	- mass matrix where the results are stored (output)

Returns:: The function returns assmebled matrix in the parameter mm.

Created by Tomas Koudelka, 12.8.2001

This function computes mass matrix of given element.

Parameters:

	eid	- element id.
	mm	- mass matrix where the results are stored

Definition at line 168 of file springel.cpp.

References fillm().

void res_internal_forces	(	long	lcid,
		long	eid,
		vector &	ifor
	)

The function computes resulting internal forces.

Parameters:

	lcid	- load case id
	eid	- element id
	ifor	- vector of internal forces (output)

Returns:: The function returns vector of internal forces in the parameter ifor

Created by Tomas Koudelka, 12.8.2001

This function computes resulting internal forces.

Parameters:

	lcid	- load case id
	eid	- element id
	ifor	- vector of internal forces

12.8.2001

Definition at line 336 of file springel.cpp.

References internal_forces().

Referenced by elem_internal_forces(), elem_nonloc_internal_forces(), and femplast_epressure().

void res_stiffness_matrix	(	long	eid,
		matrix &	sm
	)

The function computes resulting stiffness matrix

Parameters:

	eid	- element id.
	sm	- stiffness matrix where the results are stored (output)

Returns:: The function returns assmebled resulting stiffness matrix in the parameter sm.

Created by Tomas Koudelka, 12.8.2001

This function computes resulting stiffness matrix

Parameters:

	eid	- element id.
	sm	- stiffness matrix where the results are stored.

Definition at line 151 of file springel.cpp.

References stiffness_matrix().

Referenced by arclengthrv(), and stiffmat().

void stiffness_matrix	(	long	eid,
		long	ri,
		long	ci,
		matrix &	sm
	)

The function computes stiffness matrix of given block. The type of element determines direction of the spring support and thus the stiffness contribution is stored to the appropriate position of the matrix sm.

Parameters:

	eid	- element id.
	ri	- block row id
	ci	- block column id
	sm	- stiffness matrix where the results are stored (output)

Returns:: The function returns assmebled block of stiffness matrix in the parameter sm.

Created by Tomas Koudelka, 12.8.2001

This function computes stiffness matrix of given block. The type of element determines direction of the spring support and thus the stiffness contribution is stored to the appropriate position of the matrix sm.

Parameters: