aci78 Class Reference

#include <aci78.h>

Public Member Functions
	aci78 ()
void	compliance (double t_current, double &fi_t_t_dash, double &fcyl_t_dash, double &eps_shr_t)
void	matstiff (matrix &d, long ipp)
void	read (XFILE *in)
	~aci78 ()
Private Types
enum	curing { WATER_CURING = 1, AIR_CURING = 2, STEAM_CURING = 3 }
Private Attributes
double	air_content
	air content
long	concrete_type
	type of concrete
double	cs_thickness
	cross-sectional thickness [m]
long	curing
	type of curing
double	density
	volume density [kg/m3]
double	fcyl28
	28-day cylinder strength of concrete [kPa]
double	humidity
	relative humidity <0,1>
double	p6
	coefficient of correction which is dependent on lab measurement, normally 1.0
double	ratio_ac
	aggregate/cement ratio
double	ratio_as
	aggregate/send ratio
double	ratio_wc
	water/cement ratio
double	slump
	slump of fresh concrete [m]
double	t_end_curing
	time and curing [days]
double	t_loading
	age at loading [days]

Detailed Description

< This file declares the class for the calculation of the compliance function according to the model ACI 1978

Definition at line 7 of file aci78.h.

Member Enumeration Documentation

enum curing [private]

Enumerator:

WATER_CURING
AIR_CURING
STEAM_CURING

Definition at line 20 of file aci78.h.

Constructor & Destructor Documentation

aci78 ( )

The constructor defines the variables and fills them nought except that parameter p6=1 (real value without the correction).

created 11.9.2001 by Martin Kulhavy, mkulhavy@cml.fsv.cvut.cz

Definition at line 13 of file aci78.cpp.

References air_content, cs_thickness, density, fcyl28, humidity, p6, ratio_ac, ratio_as, ratio_wc, slump, and t_end_curing.

~aci78 ( )

Definition at line 29 of file aci78.cpp.

Member Function Documentation

void compliance	(	double	t_current,
		double &	fi_t_t_dash,
		double &	fcyl_t_dash,
		double &	eps_shr_t
	)

The function computes compliance function. Parameters:

Parameters:

	t_current	is the concrete age [days]
	fi_t_t_dash	is the concrete compliance at time t since loading to t_loading [1/kPa]
	fcyl_t_dash	is the concrete strength in compression at time of loading [kPa]
	eps_shr_t	is the shrinkage at time t (from time_end_curing)

created 9.11.2001 by Martin Kulhavy, mkulhavy@cml.fsv.cvut.cz

Definition at line 60 of file aci78.cpp.

References air_content, tablefunct::asize, concrete_type, cs_thickness, density, fcyl28, tablefunct::getval(), humidity, tablefunct::itype, lagrange, p6, ratio_ac, ratio_as, ratio_wc, slump, STEAM_CURING, t_end_curing, t_loading, tablefunct::x, and tablefunct::y.

Referenced by mechmat::stiff_eps().

void matstiff	(	matrix &	d,
		long	ipp
	)

The function returns tangent stiffness matrix of material Parameters:

Parameters:

	ipp	is integration point pointer
	d	is elastic stiffness matrix

created 9.11.2001 by Martin Kulhavy, mkulhavy@cml.fsv.cvut.cz

Definition at line 264 of file aci78.cpp.

References mechmat::elmatstiff(), and Mm.

void read ( XFILE * in )

The function reads input characteristics (time end of curing, time at loading, slump of fresh concrete, concrete density, aggregate-cement ratio, water-cement ratio, aggregate-send ratio, humidity, cross-sectional thickness, air content, compressive strength of concrete at 28 days, type of curing, concrete type) from the file. Parameters:

Parameters:

in

is the name of input file

created 9.11.2001 by Martin Kulhavy, mkulhavy@cml.fsv.cvut.cz

Definition at line 42 of file aci78.cpp.

References air_content, concrete_type, cs_thickness, density, fcyl28, humidity, ratio_ac, ratio_as, ratio_wc, slump, t_end_curing, t_loading, and xfscanf().