Class that stores funcions and material properties of the vertical steel reinforcement bars with Giuffré, Menegotto and Pinto 1970 as the material model and the OpenSeesPy command type used to model it is Steel02. More...

Inheritance diagram for GMP1970:

Public Member Functions
def	__init__ (self, int ID, fy, Ey, b=0.02, R0=20, cR1=0.9, cR2=0.08, a1=0.039, a2=1.0, a3=0.029, a4=1.0)
	Constructor of the class. More...

def	CheckApplicability (self)
	Implementation of the homonym abstract method. More...

def	ReInit (self)
	Implementation of the homonym abstract method. More...

def	ShowInfo (self)
	Implementation of the homonym abstract method. More...

def	Steel02 (self)
	Generate the material model Steel02 uniaxial Giuffre-Menegotto-Pinto steel material with isotropic strain hardening. More...

def	UpdateStoredData (self)
	Implementation of the homonym abstract method. More...

def	CheckApplicability (self)
	Abstract function used to check the applicability of the material model. More...

Public Attributes
	a1

	a2

	a3

	a4

	b

	cR1

	cR2

	data

	Ey

	fy

	ID

	Initialized

	R0

	section_name_tag

Detailed Description

Class that stores funcions and material properties of the vertical steel reinforcement bars with Giuffré, Menegotto and Pinto 1970 as the material model and the OpenSeesPy command type used to model it is Steel02.

For more information about the empirical model for the computation of the parameters, see Giuffré, Menegotto and Pinto 1970 and Carreno et Al. 2020.

Parameters

MaterialModels Parent abstract class.

Definition at line 2470 of file MaterialModels.py.

Constructor & Destructor Documentation

◆ init()

def __init__	(		self,
		int	ID,
			fy,
			Ey,
			b = `0.02`,
			R0 = `20`,
			cR1 = `0.9`,
			cR2 = `0.08`,
			a1 = `0.039`,
			a2 = `1.0`,
			a3 = `0.029`,
			a4 = `1.0`
	)

Constructor of the class.

The parameters are suggested as exposed in Carreno et Al. 2020 but also the one suggested by OpenSeesPy documentation are reliable (b = 0.015, R0 = 10, cR1 = 0.925, cR2 = 0.15).

Parameters

ID	(int): Unique material model ID.
fy	(float): Steel yield strength.
Ey	(float): Young modulus.
b	(float, optional): Strain-hardening ratio. Defaults to 0.02, according to Carreno et Al. 2020.
R0	(int, optional): First parameter to control the transition from elastic to plastic branches. Defaults to 20, according to Carreno et Al. 2020.
cR1	(float, optional): Second parameter to control the transition from elastic to plastic branches. Defaults to 0.9, according to Carreno et Al. 2020.
cR2	(float, optional): Third parameter to control the transition from elastic to plastic branches. Defaults to 0.08, according to Carreno et Al. 2020.
a1	(float, optional): Isotropic hardening parameter, increase of compression yield envelope as proportion of yield strength after a plastic strain. Defaults to 0.039, according to Carreno et Al. 2020.
a2	(float, optional): Coupled with a1. Defaults to 1.0, according to Carreno et Al. 2020.
a3	(float, optional): Isotropic hardening parameter, increase of tension yield envelope as proportion of yield strength after a plastic strain. Defaults to 0.029, according to Carreno et Al. 2020.
a4	(float, optional): Coupled with a3. Defaults to 1.0, according to Carreno et Al. 2020.

Exceptions

NegativeValue ID needs to be a positive integer.

Reimplemented in GMP1970RCRectShape.

Definition at line 2478 of file MaterialModels.py.

    def __init__(self, ID: int, fy, Ey, b = 0.02, R0 = 20, cR1 = 0.9, cR2 = 0.08, a1 = 0.039, a2 = 1.0, a3 = 0.029, a4 = 1.0):
        """
        Constructor of the class. The parameters are suggested as exposed in Carreno et Al. 2020 but also the one suggested by OpenSeesPy documentation are reliable 
            (b = 0.015, R0 = 10, cR1 = 0.925, cR2 = 0.15).
        
        @param ID (int): Unique material model ID.
        @param fy (float): Steel yield strength.
        @param Ey (float): Young modulus.
        @param b (float, optional): Strain-hardening ratio. Defaults to 0.02, according to Carreno et Al. 2020.
        @param R0 (int, optional): First parameter to control the transition from elastic to plastic branches. Defaults to 20, according to Carreno et Al. 2020.
        @param cR1 (float, optional): Second parameter to control the transition from elastic to plastic branches. Defaults to 0.9, according to Carreno et Al. 2020.
        @param cR2 (float, optional): Third parameter to control the transition from elastic to plastic branches. Defaults to 0.08, according to Carreno et Al. 2020.
        @param a1 (float, optional): Isotropic hardening parameter, increase of compression yield envelope as proportion of yield strength after a plastic strain.
            Defaults to 0.039, according to Carreno et Al. 2020.
        @param a2 (float, optional): Coupled with a1. Defaults to 1.0, according to Carreno et Al. 2020.
        @param a3 (float, optional): Isotropic hardening parameter, increase of tension yield envelope as proportion of yield strength after a plastic strain.
            Defaults to 0.029, according to Carreno et Al. 2020.
        @param a4 (float, optional): Coupled with a3. Defaults to 1.0, according to Carreno et Al. 2020.
 
        @exception NegativeValue: ID needs to be a positive integer.
        """
        # Check
        if ID < 1: raise NegativeValue()
 
        # Arguments
        self.ID = ID
        self.fy = fy
        self.Ey = Ey
        self.b = b
        self.R0 = R0
        self.cR1 = cR1
        self.cR2 = cR2
        self.a1 = a1
        self.a2 = a2
        self.a3 = a3
        self.a4 = a4
 
        # Initialized the parameters that are dependent from others
        self.section_name_tag = "None"
        self.Initialized = False
        self.ReInit()
 

Member Function Documentation

◆ CheckApplicability()

def CheckApplicability ( self )

Implementation of the homonym abstract method.

See parent class MaterialModels for detailed information.

Reimplemented from MaterialModels.

Definition at line 2575 of file MaterialModels.py.

    def CheckApplicability(self):
        """
        Implementation of the homonym abstract method.
        See parent class MaterialModels for detailed information.
        """
        Check = True
        # No checks
        if not Check:
            print("The validity of the equations is not fullfilled.")
            print("!!!!!!! WARNING !!!!!!! Check material model of GMP1970, ID=", self.ID)
            print("")
 
 

◆ ReInit()

def ReInit ( self )

Implementation of the homonym abstract method.

See parent class DataManagement for detailed information.

Definition at line 2520 of file MaterialModels.py.

    def ReInit(self):
        """
        Implementation of the homonym abstract method.
        See parent class DataManagement for detailed information.
        """
        # Check applicability
        self.CheckApplicability()
 
        # Members
        if self.section_name_tag != "None": self.section_name_tag = self.section_name_tag + " (modified)"
 
        # Data storage for loading/saving
        self.UpdateStoredData()
 
 

◆ ShowInfo()

def ShowInfo ( self )

Implementation of the homonym abstract method.

See parent class DataManagement for detailed information.

Definition at line 2557 of file MaterialModels.py.

    def ShowInfo(self):
        """
        Implementation of the homonym abstract method.
        See parent class DataManagement for detailed information.
        """
        print("")
        print("Requested info for GMP1970 (Giuffré-Menegotto-Pinto) material model Parameters, ID = {}".format(self.ID))
        print("Section associated: {} ".format(self.section_name_tag))
        print("Yield stress fy = {} MPa".format(self.fy/MPa_unit))
        print("Young modulus Ey = {} MPa".format(self.Ey/MPa_unit))
        print("Strain hardening ratio b = {}".format(self.b))
        print("Bauschinger effect factors R0 = {}, cR1 = {} and cR2 = {}".format(self.R0, self.cR1, self.cR2))
        print("Isotropic hardening factors a1 = {}, a2 = {}, a3 = {} and a4 = {}".format(self.a1, self.a2, self.a3, self.a4))
        print("")
 
        #TODO: add plot option (difficult to implement)
 
 

◆ Steel02()

def Steel02 ( self )

Generate the material model Steel02 uniaxial Giuffre-Menegotto-Pinto steel material with isotropic strain hardening.

See _Steel02 function for more information.

Definition at line 2588 of file MaterialModels.py.

    def Steel02(self):
        """
        Generate the material model Steel02 uniaxial Giuffre-Menegotto-Pinto steel material with isotropic strain hardening.
        See _Steel02 function for more information.
        """
        _Steel02(self.ID, self.fy, self.Ey, self.b, self.R0, self.cR1, self.cR2, self.a1, self.a2, self.a3, self.a4)
        self.Initialized = True
        self.UpdateStoredData()
 
 

◆ UpdateStoredData()

def UpdateStoredData ( self )

Implementation of the homonym abstract method.

See parent class DataManagement for detailed information.

Definition at line 2536 of file MaterialModels.py.

    def UpdateStoredData(self):
        """
        Implementation of the homonym abstract method.
        See parent class DataManagement for detailed information.
        """
        self.data = [["INFO_TYPE", "GMP1970"], # Tag for differentiating different data
            ["ID", self.ID],
            ["section_name_tag", self.section_name_tag],
            ["fy", self.fy],
            ["Ey", self.Ey],
            ["b", self.b],
            ["R0", self.R0],
            ["cR1", self.cR1],
            ["cR2", self.cR2],
            ["a1", self.a1],
            ["a2", self.a2],
            ["a3", self.a3],
            ["a4", self.a4],
            ["Initialized", self.Initialized]]
 
 

Member Data Documentation

◆ a1

a1

Definition at line 2510 of file MaterialModels.py.

◆ a2

a2

Definition at line 2511 of file MaterialModels.py.

◆ a3

a3

Definition at line 2512 of file MaterialModels.py.

◆ a4

a4

Definition at line 2513 of file MaterialModels.py.

◆ b

b

Definition at line 2506 of file MaterialModels.py.

◆ cR1

cR1

Definition at line 2508 of file MaterialModels.py.

◆ cR2

cR2

Definition at line 2509 of file MaterialModels.py.

◆ data

data

Definition at line 2541 of file MaterialModels.py.

◆ Ey

Ey

Definition at line 2505 of file MaterialModels.py.

◆ fy

fy

Definition at line 2504 of file MaterialModels.py.

◆ ID

ID

Definition at line 2503 of file MaterialModels.py.

◆ Initialized

Initialized

Definition at line 2517 of file MaterialModels.py.

◆ R0

R0

Definition at line 2507 of file MaterialModels.py.

◆ section_name_tag

section_name_tag

Definition at line 2516 of file MaterialModels.py.

The documentation for this class was generated from the following file:

/media/carmine/DATA/Programmi/OpenSeesPyAssistant/MaterialModels.py

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __init__()

Member Function Documentation

◆ CheckApplicability()

◆ ReInit()

◆ ShowInfo()

◆ Steel02()

◆ UpdateStoredData()

Member Data Documentation

◆ a1

◆ a2

◆ a3

◆ a4

◆ b

◆ cR1

◆ cR2

◆ data

◆ Ey

◆ fy

◆ ID

◆ Initialized

◆ R0

◆ section_name_tag

◆ init()