dstelem Class Reference

#include <dst.h>

Public Member Functions
double	approx (vector &areacoord, vector &nodval)
void	appval (vector &l, long fi, long nc, vector &eps, double **val)
void	areaforces (long eid, double *nv, vector &nf)
void	compute_nlstress (long lcid, long eid, long ri, long ci)
void	compute_nlstressincr (long lcid, long eid, long ri, long ci)
void	dmatblock (matrix &dd, matrix &d, long ri, long ci, double t)
	dstelem (void)
void	elem_integration (integratedquant iq, long lcid, long eid, long ri, long ci, vector &nv, vector &x, vector &y)
void	geom_matrix_bconst (matrix &gm, vector &x, vector &y)
void	geom_matrix_bending (matrix &gm, matrix &a, matrix &ct, vector &x, vector &y, vector &l)
void	geom_matrix_shear (matrix &gs, matrix &a, matrix &ct, long eid)
void	incr_internal_forces (long lcid, long eid, long ri, long ci, vector &ifor, vector &x, vector &y)
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, vector &x, vector &y)
void	ip_strains (long lcid, long eid, long ri, long ci, vector &x, vector &y, vector &r)
void	nodecoord (vector &xi, vector &eta)
void	nodeforces (long eid, long le, double nv, vector &nf)
void	res_incr_internal_forces (long lcid, long eid, vector &ifor)
void	res_internal_forces (long lcid, long eid, vector &ifor)
void	res_ip_strains (long lcid, long eid)
void	res_ip_stresses (long lcid, long eid)
void	res_stiffness_matrix (long eid, matrix &sm)
void	stiffness_matrix (long eid, long ri, long ci, matrix &sm, vector &x, vector &y)
void	strains (long lcid, long eid, long ri, long ci)
void	stresses (long lcid, long eid, long ri, long ci)
void	tran_matrix (matrix &a, matrix &ct, long eid)
void	transf_matrix (ivector &nodes, matrix &tmat)
	~dstelem (void)
Public Attributes
long *	cncomp
long	intordb
long	intordmm
long **	intordsm
long	napfun
long	nb
long *	ncomp
long	ndofe
long	ned
long **	nip
long	nne
long	nned
strastrestate	ssst
long	tncomp
long	tnip
	total number of integration points on element

Detailed Description

Definition at line 9 of file dst.h.

Constructor & Destructor Documentation

dstelem ( void )

Definition at line 11 of file dst.cpp.

References cncomp, intordb, intordmm, intordsm, napfun, nb, ncomp, ndofe, ned, nip, nne, nned, plates, ssst, tncomp, and tnip.

~dstelem ( void )

Definition at line 73 of file dst.cpp.

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

Member Function Documentation

double approx	(	vector &	areacoord,
		vector &	nodval
	)

function approximates function defined by nodal values

Parameters:

	areacoord	- vector containing area coordinates
	nodval	- nodal values

JK, 23.9.2008

Definition at line 97 of file dst.cpp.

References f, and scprd().

Referenced by elem_integration().

void appval	(	vector &	l,
		long	fi,
		long	nc,
		vector &	eps,
		double **	val
	)

function computes strains DST

Definition at line 493 of file dst.cpp.

References allocv(), destrv(), nne, and nodval().

void areaforces	(	long	eid,
		double *	nv,
		vector &	nf
	)

function computes load vector from area forces fz of the DST 15.3.2002

Definition at line 936 of file dst.cpp.

References mechtop::give_elemnodes(), mechtop::give_node_coord2d(), Mt, nne, and nodes.

void compute_nlstress	(	long	lcid,
		long	eid,
		long	ri,
		long	ci
	)

function computes correct stresses at integration points on element

Parameters:

	lcid	- number of load case
	eid	- element id
	ri,ci	- row and column indices

JK, 27.9.2008

Definition at line 623 of file dst.cpp.

References vector::a, allocv(), mechmat::computenlstresses(), destrv(), mechtop::elements, gauss_points_tr(), mechtop::give_elemnodes(), mechcrsec::give_thickness(), mechmat::givestress(), intordsm, element::ipp, Mc, Mm, Mp, Mt, nb, nne, nodes, mechmat::storestress(), and probdesc::strcomp.

Referenced by internal_forces(), and res_ip_stresses().

void compute_nlstressincr	(	long	lcid,
		long	eid,
		long	ri,
		long	ci
	)

function computes correct increments of stresses at integration points on element

Parameters:

	lcid	- number of load case
	eid	- element id
	ri,ci	- row and column indices

JK, 23.9.2008

Definition at line 729 of file dst.cpp.

References mechmat::computenlstressesincr(), mechtop::elements, intordsm, element::ipp, Mm, Mp, Mt, nb, and probdesc::strcomp.

Referenced by incr_internal_forces().

void dmatblock	(	matrix &	dd,
		matrix &	d,
		long	ri,
		long	ci,
		double	t
	)

function extracts components of the shear part of stiffness matrix of the material to the matrix ds 20.3.2002

Definition at line 376 of file dst.cpp.

References fillm().

Referenced by geom_matrix_shear(), stiffness_matrix(), and tran_matrix().

void elem_integration	(	integratedquant	iq,
		long	lcid,
		long	eid,
		long	ri,
		long	ci,
		vector &	nv,
		vector &	x,
		vector &	y
	)

function integrates selected quantity over the finite element it results in nodal values

Parameters:

	iq	- type of integrated quantity (see alias.h)
	lcid	- number of load case
	eid	- element id
	ri,ci	- row and column indices
	nv	- nodal values
	x,y	- node coordinates

JK, 23.9.2008

Definition at line 819 of file dst.cpp.

References vector::a, addv(), allocm(), allocv(), approx(), cmulv(), cncomp, destrm(), destrv(), mechtop::elements, fillv(), gauss_points_tr(), geom_matrix_bconst(), geom_matrix_bending(), geom_matrix_shear(), mechtop::give_elemnodes(), mechcrsec::give_thickness(), mechmat::givequantity(), intordsm, element::ipp, Mc, Mm, Mt, mtxv(), nb, ncomp, ndofe, nne, nodes, and tran_matrix().

Referenced by incr_internal_forces(), and internal_forces().

void geom_matrix_bconst	(	matrix &	gm,
		vector &	x,
		vector &	y
	)

Definition at line 234 of file dst.cpp.

Referenced by elem_integration(), ip_strains(), and stiffness_matrix().

void geom_matrix_bending	(	matrix &	gm,
		matrix &	a,
		matrix &	ct,
		vector &	x,
		vector &	y,
		vector &	l
	)

Definition at line 258 of file dst.cpp.

Referenced by elem_integration(), ip_strains(), and stiffness_matrix().

void geom_matrix_shear	(	matrix &	gs,
		matrix &	a,
		matrix &	ct,
		long	eid
	)

Definition at line 291 of file dst.cpp.

References dmatblock(), mechtop::elements, mechtop::give_elemnodes(), mechtop::give_node_coord2d(), mechcrsec::give_thickness(), element::ipp, mechmat::matstiff(), Mc, Mm, Mt, nne, nodes, and tncomp.

Referenced by elem_integration(), ip_strains(), and stiffness_matrix().

void incr_internal_forces	(	long	lcid,
		long	eid,
		long	ri,
		long	ci,
		vector &	ifor,
		vector &	x,
		vector &	y
	)

function computes increment of internal forces (from correct stresses increment)

Parameters:

	lcid	- number of load case
	eid	- element id
	ri,ci	- row and column indices
	ifor	- vector of internal forces
	x,y	- vectors of nodal coordinates

TKo, 7.2008

Definition at line 762 of file dst.cpp.

References compute_nlstressincr(), elem_integration(), and stressincr.

Referenced by res_incr_internal_forces().

void inicipval	(	long	eid,
		long	ri,
		long	ci,
		matrix &	nodval,
		inictype *	ictn
	)

The function computes initial values of the given quantities at each integration point of the element from the nodal values given by the parameter nodval. Initial condition types must be the same for all nodes of the element.

Parameters:

	eid	- element id
	ri	- block row index
	ci	- block column index
	nodval	- nodal values of particular initial conditions. nodval[i][j] represents value of j-th initial condition at i-th node of the given element.
	ictn	- array of types of initial condition for each node of element. The type of initial condition determines which values are being specified in the node. (ictn[i] & inistrain) returns nonzero if nodal values of initial strains are specified (ictn[i] & inistress) returns nonzero if nodal values of initial stresses are specified (ictn[i] & iniother) returns nonzero if nodal values of initial values of eqother array are specified (ictn[i] & inicond) returns nonzero if nodal values of other initial conditions are specified