glasgowdam Class Reference

#include <glasgowdam.h>

Public Member Functions
void	compute_thermdilat (double t, double dt, matrix &eps)
void	damfuncpar (long ipp, vector &eps, vector &kappa)
double	damfunction (long ipp, double tempr, double chi, vector &kappa)
	glasgowdam ()
void	matstiff (matrix &d, long ipp, long ido)
void	nlstresses (long ipp, long im, long ido)
void	read (XFILE *in)
double	thermdamfunction (long ipp, double tempr, vector &kappa)
void	updateval (long ipp, long im, long ido)
	~glasgowdam ()
Public Attributes
paramf_type	ft
	type of norm of equivalent strains
double	gf0
	fracture energy at room temperature
double	k
	ratio between compressive and tensile strengths
double	lc
	characteristic length of localization zone
double	reftemp
	reference temperature
double	st
	tensile strength

Detailed Description

class contains mechanical part of the Glasgow material model of hygro-thermo-mechanical problems

strain rate is the sum of rates of elastic, plastic, free thermal, creep and load induced thermal strains

stored values in the array eqother: previous total stresses, previous total strains, previous total irreversible strains, increment of irreversible strains, previous temperature, equivalent strain, mechanical damage parameter, maximum reached normalized temperature, thermal damage parameter, mechanical damage increment

Definition at line 23 of file glasgowdam.h.

Constructor & Destructor Documentation

glasgowdam ( void )

This constructor inializes attributes to zero values.

TKo

Definition at line 19 of file glasgowdam.cpp.

References ft, gf0, k, lc, reftemp, and st.

~glasgowdam ( void )

This destructor is only for the formal purposes.

TKo

Definition at line 34 of file glasgowdam.cpp.

Member Function Documentation

void compute_thermdilat	(	double	t,
		double	dt,
		matrix &	eps
	)

function computes

Parameters:

	t	- temeprature
	dt	- incrment of temperature
	eps	- thermal strain increment

Definition at line 196 of file glasgowdam.cpp.

References fillm().

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

This 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

TKo

Definition at line 64 of file glasgowdam.cpp.

References allocm(), allocv(), deviator(), elastisomat::e, mechmat::eliso, elisomat, extractposv(), fillv(), first_invar(), ft, intpoints::gemid(), intpoints::idm, mechmat::ip, k, limit, Mm, Mp, intpoints::ncompstr, nijac, normazar, elastisomat::nu, princ_val(), scprd(), second_invar(), intpoints::ssst, strain, intpoints::tm, vector_tensor(), vonmises, and probdesc::zero.

Referenced by nlstresses().

double damfunction	(	long	ipp,
		double	tempr,
		double	chi,
		vector &	kappa
	)

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

Parameters:

	ipp	- integration point number
	tempr	- actual temperature
	chi	- thermal damage parameter
	kappa	- vector of the parameters of damage function kappa[0] = maximum reached equivalent strain kappa[1] = maximum reached temperature in Celsius

TKo

Definition at line 138 of file glasgowdam.cpp.

References elastisomat::e, mechmat::eliso, elisomat, intpoints::gemid(), gf0, intpoints::idm, mechmat::ip, lc, Mm, st, and intpoints::tm.

Referenced by nlstresses().

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

This function computes material stiffnes matrix.

Parameters:

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

TKo

Definition at line 249 of file glasgowdam.cpp.

References cmulm(), mechmat::elmatstiff(), intpoints::eqother, initial_stiff, mechmat::ip, Mm, Mp, probdesc::nlman, reftemp, nonlinman::stmat, tangent_stiff, and thermdamfunction().

Referenced by mechmat::matstiff().

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

This 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

TKo, 7.10.2001

Definition at line 287 of file glasgowdam.cpp.

References cmulv(), copyv(), damfuncpar(), damfunction(), mechmat::elmatstiff(), intpoints::eqother, mechmat::ip, local, probdesc::matmodel, Mm, Mp, mxv(), intpoints::ncompstr, intpoints::other, reftemp, intpoints::strain, intpoints::stress, and thermdamfunction().

Referenced by mechmat::computenlstresses().

void read ( XFILE * in )

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

Parameters:

in

- pointer to the opened input text file

TKo

Definition at line 47 of file glasgowdam.cpp.

References ft, gf0, k, lc, paramf_type_kwdset(), reftemp, st, and xfscanf().

Referenced by mechmat::readmattype().

double thermdamfunction	(	long	ipp,
		double	tempr,
		vector &	kappa
	)

This function computes thermal damage parameter chi which is the result of the thermal damage function.

Parameters:

	ipp	- integration point number
	tempr	- actual temperature
	kappa	- vector of the parameters of thermal damage function it contains the maximum of either the largest value attained by temperature or the reference temperature

Definition at line 225 of file glasgowdam.cpp.

Referenced by matstiff(), and nlstresses().

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

This 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

TKo

Definition at line 351 of file glasgowdam.cpp.

References intpoints::eqother, mechmat::givencompeqother(), mechmat::ip, Mm, and intpoints::other.

Referenced by mechmat::updateipvalmat().