scaldam Class Reference

#include <scaldam.h>

Public Member Functions
void	changeparam (atsel &atm, vector &val)
void	damfuncpar (long ipp, vector &eps, vector &kappa)
double	damfunction (long ipp, vector &kappa, vector &omegao)
void	elmatstiff (matrix &d, long ipp)
double	epsefunction (long ipp)
double	give_actual_ft (long ipp, long im, long ido)
double	give_crackwidth (long ipp, long ido)
double	give_proczonelength (long ipp, long ido)
double	givedamage (long ipp, long ido)
void	matstiff (matrix &d, long ipp, long ido)
void	nlstresses (long ipp, long im, long ido)
void	print (FILE *out)
void	read (XFILE *in)
	scaldam (void)
void	updateval (long ipp, long im, long ido)
	~scaldam (void)
Public Attributes
double	c
	parameter for energy norm
corr_disip_en	cde
	correction of disipated energy switch
long	cftt
	switch for effects of temperature on tensile strength
double	ft
	tensile strength for room temperature
gfunct	ft_temp
	function describing dependency of tensile strength on temperature
paramf_type	ftype
	type of function for evaluation damage funtion parameter
double	k
	parameter for von Mises norm - ratio of compression and tensile strength
strretalg	sra
	stress return algorithm
double	uf
	determines the softening -> corresponds to crack opening (not strain) when tension stress vanishes

Detailed Description

This class defines scalar isotropic damage material model. The different type of norms for the computing parameters of the damage function can be used. The order of internal variables is following : 0 - actual value of equivalent strain 1 - actual value of damage parameter 2 - actual value of crack opening

Definition at line 21 of file scaldam.h.

Constructor & Destructor Documentation

scaldam ( void )

The constructor inializes attributes to zero values.

Created by Tomas Koudelka,

Definition at line 21 of file scaldam.cpp.

References c, cde, corr_on, ft, k, and uf.

~scaldam ( void )

The destructor is defined only for the formal purposes.

Created by Tomas Koudelka,

Definition at line 33 of file scaldam.cpp.

Member Function Documentation

void changeparam	(	atsel &	atm,
		vector &	val
	)

The function changes material parameters for stochastic analysis.

Parameters:

	atm	- selected material parameters (parameters which are changed)
	val	- array containing new values of parameters

Returns:: The function does not return anything.

Created by Tomas Koudelka,

Definition at line 652 of file scaldam.cpp.

References atsel::atrib, ft, atsel::num, print_err(), and uf.

void damfuncpar	(	long	ipp,
		vector &	eps,
		vector &	kappa
	)

The function computes parameters for the damage function Different types of the parameter computing are given by the attribute ft.

Parameters:

	ipp	- integration point number
	eps	- vector of the strains
	kappa	- vector where the computed parameters are stored (output)

Returns:: The function returns actual vetcor of parameters of damage function in the parameter kappa.

Created by Tomas Koudelka,

Definition at line 108 of file scaldam.cpp.

References allocm(), allocv(), c, deviator(), elmatstiff(), extractposv(), fillv(), first_invar(), ftype, mechmat::give_actual_nu(), mechmat::give_actual_ym(), mechmat::ip, k, limit, Mm, Mp, mxv(), vector::n, intpoints::ncompstr, nijac, norenergy, normazar, norposenergy, norposstrain, norrankine, norrankinesmooth, norstrain, princ_val(), print_err(), scprd(), second_invar(), intpoints::ssst, strain, stress, vector_tensor(), vonmises, vxm(), and probdesc::zero.

Referenced by mechmat::damfuncpar().

double damfunction	(	long	ipp,
		vector &	kappa,
		vector &	omegao
	)

The function computes damage parameter omega which is the result of the damage function.

Parameters:

	ipp	- integration point number
	kappa	- vector of the parameters of damage function
	omegao	- vector of attained damage parameters

Returns:: Function returns value of the damage parameter omega.

Created by Tomas Koudelka,

Definition at line 258 of file scaldam.cpp.

References cde, corr_off, mechmat::elip, ft, mechmat::give_actual_ft(), mechmat::give_actual_ym(), mechtop::give_area(), mechtop::give_dimension(), strretalg::give_err(), mechtop::give_length(), strretalg::give_ni(), mechtop::give_volume(), h(), intpoints::hmt, mechmat::ip, Mm, Mt, print_err(), sra, and uf.

Referenced by mechmat::damfunction().

void elmatstiff	(	matrix &	d,
		long	ipp
	)

The function computes elastic material stiffnes matrix from actual Young modulus.

Parameters:

	d	- allocated matrix structure for material stiffness matrix
	ipp	- integration point number

Returns:: The function returns computed elastic stiffness matrix in the parameter d.

Created by Tomas Koudelka,

Definition at line 385 of file scaldam.cpp.

References cmulm(), mechmat::elmatstiff(), intpoints::gemid(), mechmat::give_actual_ym(), mechmat::givencompeqother(), mechmat::ip, and Mm.

Referenced by damfuncpar(), matstiff(), and nlstresses().

double epsefunction ( long ipp )

This function returns the value of the limit elastic strain which is dependent on actual value of Young modulus and actual value of tensile strength.

Parameters:

ipp

- integration point number in the mechmat ip array.

Returns:: Function returns actual value of limit elastic strain

Created by Tomas Koudelka,

Definition at line 566 of file scaldam.cpp.

References ft, mechmat::give_actual_ft(), mechmat::give_actual_ym(), and Mm.

Referenced by mechmat::epsefunction().

double give_actual_ft	(	long	ipp,
		long	im,
		long	ido
	)

The function returns the actual value of tensile strength.

Parameters:

	ipp	- integration point number in the mechmat ip array.
	im	- material index
	ido	- index of internal variables for given material in the ipp other array

Returns:: The function returns actual value of tensile strength.

Created by Tomas Koudelka,

Definition at line 542 of file scaldam.cpp.

References ft.

Referenced by mechmat::give_actual_ft().

double give_crackwidth	(	long	ipp,
		long	ido
	)

This function returns the crack width

Parameters:

	ipp	- integration point number in the mechmat ip array.
	ido	- index of internal variables for given material in the ipp other array

Returns:: Function returns the crack width

Created by Tomas Koudelka,

Definition at line 637 of file scaldam.cpp.

References intpoints::eqother, mechmat::ip, and Mm.

Referenced by mechmat::give_crackwidth().

double give_proczonelength	(	long	ipp,
		long	ido
	)

This function returns the length of process zone

Parameters:

	ipp	- integration point number in the mechmat ip array.
	ido	- index of internal variables for given material in the ipp other array

Returns:: Function returns the length of process zone

Created by Tomas Koudelka,

Definition at line 601 of file scaldam.cpp.

References mechmat::elip, mechtop::give_area(), mechtop::give_dimension(), mechtop::give_length(), mechtop::give_volume(), h(), Mm, Mt, and print_err().

Referenced by mechmat::give_proczonelength().

double givedamage	(	long	ipp,
		long	ido
	)

This function returns the value of damage parameter obtained from the last converged state.

Parameters:

	ipp	- integration point number in the mechmat ip array.
	ido	- index of internal variables for given material in the ipp other array

Returns:: Function returns the value of damage parameter omega.

Created by Tomas Koudelka,

Definition at line 586 of file scaldam.cpp.

References intpoints::eqother, mechmat::ip, and Mm.

Referenced by mechmat::give_dampar().

void matstiff	(	matrix &	d,
		long	ipp,
		long	ido
	)

The function computes material stiffnes matrix.

Parameters:

	d	- allocated matrix structure for material stiffness matrix (output)
	ipp	- integration point number
	ido	- index of internal variables for given material in the ipp other array

Returns:: The function returns computed stiffness matrix in the parameter d.

Created by Tomas Koudelka,

Definition at line 414 of file scaldam.cpp.

References cmulm(), elmatstiff(), intpoints::eqother, ijth_tangent_stiff, incr_tangent_stiff, initial_stiff, mechmat::ip, Mm, Mp, probdesc::nlman, print_err(), secant_stiff, nonlinman::stmat, and tangent_stiff.

Referenced by mechmat::matstiff().

void nlstresses	(	long	ipp,
		long	im,
		long	ido
	)

The function computes correct stresses in the integration point and stores them into ip stress array.

Parameters:

	ipp	- integration point pointer
	im	- index of material type for given ip
	ido	- index of internal variables for given material in the ipp other array

Returns:: The function does not return anything.

Created by Tomas Koudelka, 7.10.2001

Definition at line 452 of file scaldam.cpp.

References mechmat::elip, elmatstiff(), intpoints::eqother, mechmat::give_actual_nu(), mechmat::give_actual_ym(), mechtop::give_area(), mechtop::give_dimension(), mechtop::give_length(), mechtop::give_volume(), h(), mechmat::ip, Mm, Mt, intpoints::ncompstr, intpoints::other, planestress, print_err(), mechmat::scal_dam_sol(), intpoints::ssst, intpoints::strain, and intpoints::stress.

Referenced by mechmat::compnonloc_nlstresses(), and mechmat::computenlstresses().

void print ( FILE * out )

The function prints material parameters into the opened text file given by the parameter out.

Parameters:

out

- pointer to the opened input text file

Returns:: The function does not return anything.

Created by TKr, 02/01/2013

Definition at line 80 of file scaldam.cpp.

References c, cde, corr_off, ft, ftype, k, norenergy, norposenergy, strretalg::print(), sra, uf, and vonmises.

Referenced by mechmat::printmatchar().

void read ( XFILE * in )

The function reads material parameters from the opened text file given by the parameter in.

Parameters:

in

- pointer to the opened input text file

Returns:: The function does not return anything.

Created by Tomas Koudelka,

Definition at line 50 of file scaldam.cpp.

References c, cde, corr_disip_en_kwdset(), corr_off, ft, ftype, k, norenergy, norposenergy, paramf_type_kwdset(), strretalg::read(), sra, uf, vonmises, and xfscanf().

Referenced by mechmat::readmattype().

void updateval	(	long	ipp,
		long	im,
		long	ido
	)

The function updates values in the other array reached in the previous equlibrium state to values reached in the new actual equilibrium state.

Parameters:

	ipp	- integration point number in the mechmat ip array.
	im	- index of material type for given ip
	ido	- index of internal variables for given material in the ipp other array