UniaxialBilinear Class Reference

Class that stores funcions and material properties of a simple uniaxial bilinear model with the OpenSeesPy command type used to model it is Steel01. More...

Inheritance diagram for UniaxialBilinear:

Public Member Functions
def	__init__ (self, int ID, fy, Ey, b=0.01)
	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, plot=False, block=False)
	Implementation of the homonym abstract method. More...
def	Steel01 (self)
	Generate the material model Steel01 uniaxial bilinear material model. 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
	b
	data
	Ey
	ey
	fy
	ID
	Initialized
	section_name_tag

Detailed Description

Class that stores funcions and material properties of a simple uniaxial bilinear model with the OpenSeesPy command type used to model it is Steel01.

Parameters

MaterialModels

Parent abstract class.

Definition at line 2319 of file MaterialModels.py.

Constructor & Destructor Documentation

__init__()

def __init__	(		self,
		int	ID,
			fy,
			Ey,
			b = 0.01
	)

Constructor of the class.

Parameters

ID	(int): Unique material model ID.
fy	(float): Yield stress.
Ey	(float): Young modulus.
b	(float, optional): Strain hardening factor. Defaults to 0.01.

Exceptions

NegativeValue	ID needs to be a positive integer.
NegativeValue	fy needs to be positive.
NegativeValue	Ey needs to be positive.

Reimplemented in UniaxialBilinearSteelIShape.

Definition at line 2326 of file MaterialModels.py.

    def __init__(self, ID: int, fy, Ey, b = 0.01):
        """
        Constructor of the class.
 
        @param ID (int): Unique material model ID.
        @param fy (float): Yield stress.
        @param Ey (float): Young modulus.
        @param b (float, optional): Strain hardening factor. Defaults to 0.01.
 
        @exception NegativeValue: ID needs to be a positive integer.
        @exception NegativeValue: fy needs to be positive. 
        @exception NegativeValue: Ey needs to be positive. 
        """
        # Check
        if ID < 1: raise NegativeValue()
        if fy < 0: raise NegativeValue()
        if Ey < 0: raise NegativeValue()
 
        # Arguments
        self.ID = ID
        self.fy = fy
        self.Ey = Ey
        self.b = b
 
        # 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 2423 of file MaterialModels.py.

    def CheckApplicability(self):
        """
        Implementation of the homonym abstract method.
        See parent class MaterialModels for detailed information.
        """
        Check = True
        # if len(self.wy) == 0 or len(self.wx_top) == 0 or len(self.wx_bottom) == 0: 
        #     Check = False
        #     print("Hypothesis of one bar per corner not fullfilled.")
        if not Check:
            print("The validity of the equations is not fullfilled.")
            print("!!!!!!! WARNING !!!!!!! Check material model of Uniaxial Bilinear, ID=", self.ID)
            print("")
 
 

ReInit()

def ReInit

(

self

)

Implementation of the homonym abstract method.

See parent class DataManagement for detailed information.

Definition at line 2355 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
        self.ey = self.fy / self.Ey
        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,
			plot = False,
			block = False
	)

Implementation of the homonym abstract method.

See parent class DataManagement for detailed information.

Parameters

plot	(bool, optional): Option to show the plot of the material model. Defaults to False.
block	(bool, optional): Option to wait the user command 'plt.show()' (avoiding the stop of the program everytime that a plot should pop up). Defaults to False.

Definition at line 2387 of file MaterialModels.py.

    def ShowInfo(self, plot = False, block = False):
        """
        Implementation of the homonym abstract method.
        See parent class DataManagement for detailed information.
        
        @param plot (bool, optional): Option to show the plot of the material model. Defaults to False.
        @param block (bool, optional): Option to wait the user command 'plt.show()' (avoiding the stop of the program everytime that a plot should pop up). Defaults to False.
        """
        print("")
        print("Requested info for Uniaxial Bilinear material model Parameters, ID = {}".format(self.ID))
        print("Section associated: {} ".format(self.section_name_tag))
        print('Yielding stress fy = {} MPa'.format(self.fy/MPa_unit))
        print('Young modulus Ey = {} MPa'.format(self.Ey/MPa_unit))
        print('Maximal elastic strain epsilon y = {}'.format(self.ey))
        print('Hardening factor b = {}'.format(self.b))
        print("")
 
        if plot:
            # Data for plotting
            e_pl = 10.0 * self.ey # to show that if continues with this slope
            sigma_pl = self.b * self.Ey * e_pl
 
            x_axis = np.array([0.0, self.ey, (self.ey+e_pl)])*100
            y_axis = np.array([0.0, self.fy, (self.fy+sigma_pl)])/MPa_unit
 
            fig, ax = plt.subplots()
            ax.plot(x_axis, y_axis, 'k-')
 
            ax.set(xlabel='Strain [%]', ylabel='Stress [MPa]', 
                title='Uniaxial Bilinear model for material ID={}'.format(self.ID))
            ax.grid()
 
            if block:
                plt.show()
 
 

Steel01()

def Steel01

(

self

)

Generate the material model Steel01 uniaxial bilinear material model.

See _Steel01 function for more information.

Definition at line 2438 of file MaterialModels.py.

    def Steel01(self):
        """
        Generate the material model Steel01 uniaxial bilinear material model.
        See _Steel01 function for more information.
        """
        _Steel01(self.ID, self.fy, self.Ey, self.b)
        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 2372 of file MaterialModels.py.

    def UpdateStoredData(self):
        """
        Implementation of the homonym abstract method.
        See parent class DataManagement for detailed information.
        """
        self.data = [["INFO_TYPE", "UniaxialBilinear"], # Tag for differentiating different data
            ["ID", self.ID],
            ["section_name_tag", self.section_name_tag],
            ["fy", self.fy],
            ["Ey", self.Ey],
            ["ey", self.ey],
            ["b", self.b],
            ["Initialized", self.Initialized]]
 
 

Member Data Documentation

b

b

Definition at line 2348 of file MaterialModels.py.

data

data

Definition at line 2377 of file MaterialModels.py.

Ey

Ey

Definition at line 2347 of file MaterialModels.py.

ey

ey

Definition at line 2364 of file MaterialModels.py.

fy

fy

Definition at line 2346 of file MaterialModels.py.

ID

ID

Definition at line 2345 of file MaterialModels.py.

Initialized

Initialized

Definition at line 2352 of file MaterialModels.py.

section_name_tag

section_name_tag

Definition at line 2351 of file MaterialModels.py.

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

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