SpringBasedElementModifiedIMKSteelIShape Class Reference

Class that is the children of SpringBasedElement and combine the class SteelIShape (section) to retrieve the information needed. More...

Inheritance diagram for SpringBasedElementModifiedIMKSteelIShape:

Public Member Functions
def	__init__ (self, int iNode_ID, int jNode_ID, SteelIShape section, int geo_transf_ID, new_mat_ID_i=-1, new_mat_ID_j=-1, N_G=0, L_0=-1, L_b=-1, ele_ID=-1)
	Constructor of the class. More...
Public Member Functions inherited from SpringBasedElement
def	__init__ (self, int iNode_ID, int jNode_ID, A, E, Iy_mod, int geo_transf_ID, mat_ID_i=-1, mat_ID_j=-1, ele_ID=-1)
	Constructor of the class. More...
def	CreateMember (self)
	Method that initialises the member by calling the OpenSeesPy commands through various functions. More...
def	Record (self, str spring_or_element, str name_txt, str data_dir, force_rec=True, def_rec=True, time_rec=True)
	Implementation of the homonym abstract method. More...
def	RecordNodeDef (self, str name_txt, str data_dir, time_rec=True)
	Implementation of the homonym abstract method. More...
def	ReInit (self, ele_ID=-1)
	Implementation of the homonym abstract method. More...
def	ShowInfo (self, plot=False, block=False)
	Implementation of the homonym abstract method. More...
def	UpdateStoredData (self)
	Implementation of the homonym abstract method. More...
def	Record (self, ele_ID, str name_txt, str data_dir, force_rec=True, def_rec=True, time_rec=True)
	Abstract method that records the forces, deformation and time of the member associated with the class. More...
def	RecordNodeDef (self, int iNode_ID, int jNode_ID, str name_txt, str data_dir, time_rec=True)
	Abstract method that records the deformation and time of the member's nodes associated with the class. More...

Public Attributes
	section
	section_name_tag
Public Attributes inherited from SpringBasedElement
	A
	data
	E
	ele_orientation
	element_array
	element_ID
	geo_transf_ID
	Initialized
	iNode_ID
	iNode_ID_spring
	iSpring_ID
	Iy_mod
	jNode_ID
	jNode_ID_spring
	jSpring_ID
	mat_ID_i
	mat_ID_j
	section_name_tag

Detailed Description

Class that is the children of SpringBasedElement and combine the class SteelIShape (section) to retrieve the information needed.

If there are two springs and the inflection point not in the middle, use two spring elements, connect them rigidly in the inflection point with one spring each in the extremes. L_b is assumed the same for top and bottom springs.

Parameters

SpringBasedElement

Parent class.

Definition at line 891 of file MemberModel.py.

Constructor & Destructor Documentation

__init__()

def __init__	(		self,
		int	iNode_ID,
		int	jNode_ID,
		SteelIShape	section,
		int	geo_transf_ID,
			new_mat_ID_i = -1,
			new_mat_ID_j = -1,
			N_G = 0,
			L_0 = -1,
			L_b = -1,
			ele_ID = -1
	)

Constructor of the class.

Parameters

iNode_ID	(int): ID of the first end node.
jNode_ID	(int): ID of the second end node.
section	(SteelIShape): SteelIShape section object.
geo_transf_ID	(int): A geometric transformation (for more information, see OpenSeesPy documentation).
new_mat_ID_i	(int, optional): New ID for the definition of the material model for the spring in the node i. If -1 is passed, the class generate no material model and no spring. If 0 is passed, no i spring. Defaults to -1.
new_mat_ID_j	(int, optional): New ID for the definition of the material model for the spring in the node j. If -1 is passed, the class generate no material model and no spring. If 0 is passed, no j spring. Defaults to -1.
N_G	(float, optional): Axial load. Defaults to 0.
L_0	(float, optional): Distance from the maximal moment to zero. Defaults to -1, e.g. computed in init().
L_b	(float, optional): Maximal unbraced lateral buckling length. Defaults to -1, e.g. computed in init().
ele_ID	(int, optional): Optional ID of the element. Defaults to -1, e.g. use IDConvention to define it.

Exceptions

NegativeValue	ID needs to be a positive integer.
NegativeValue	ID needs to be a positive integer.
NameError	at least one spring needs to be defined.
NegativeValue	ID needs to be a positive integer.
ZeroLength	The two nodes are superimposed.

Reimplemented from SpringBasedElement.

Definition at line 899 of file MemberModel.py.

        N_G = 0, L_0 = -1, L_b = -1, ele_ID = -1):
        """
        Constructor of the class.
 
        @param iNode_ID (int): ID of the first end node.
        @param jNode_ID (int): ID of the second end node.
        @param section (SteelIShape): SteelIShape section object.
        @param geo_transf_ID (int): A geometric transformation (for more information, see OpenSeesPy documentation).
        @param new_mat_ID_i (int, optional): New ID for the definition of the material model for the spring in the node i.
            If -1 is passed, the class generate no material model and no spring. If 0 is passed, no i spring. Defaults to -1.
        @param new_mat_ID_j (int, optional): New ID for the definition of the material model for the spring in the node j.
            If -1 is passed, the class generate no material model and no spring. If 0 is passed, no j spring. Defaults to -1.
        @param N_G (float, optional): Axial load. Defaults to 0.
        @param L_0 (float, optional): Distance from the maximal moment to zero. Defaults to -1, e.g. computed in __init__().
        @param L_b (float, optional): Maximal unbraced lateral buckling length. Defaults to -1, e.g. computed in __init__().
        @param ele_ID (int, optional): Optional ID of the element. Defaults to -1, e.g. use IDConvention to define it.
 
        @exception NegativeValue: ID needs to be a positive integer.
        @exception NegativeValue: ID needs to be a positive integer.
        @exception NameError: at least one spring needs to be defined.
        @exception NegativeValue: ID needs to be a positive integer.
        @exception ZeroLength: The two nodes are superimposed.
        """
        self.section = deepcopy(section)
        if new_mat_ID_i != -1 and new_mat_ID_i < 0: raise NegativeValue()
        if new_mat_ID_j != -1 and new_mat_ID_j < 0: raise NegativeValue()
        if new_mat_ID_i == 0 and new_mat_ID_j == 0: raise NameError("No springs imposed for element ID = {}. Use ElasticElement instead".format(IDConvention(iNode_ID, jNode_ID)))
        if ele_ID != -1 and ele_ID < 0: raise NegativeValue()
 
        if L_0 == -1:
            if new_mat_ID_i != 0 and new_mat_ID_j != 0:
                L_0 = section.L/2
            else:
                L_0 = section.L
        L_b = L_0 if L_b == -1 else L_b
 
        # auto assign ID for material of springs
        ele_orientation = NodesOrientation(iNode_ID, jNode_ID)
        if ele_orientation == "zero_length": raise ZeroLength(IDConvention(iNode_ID, jNode_ID))
        if new_mat_ID_i != 0 and new_mat_ID_i == -1:
            new_mat_ID_i = OffsetNodeIDConvention(iNode_ID, ele_orientation, "i")
        if new_mat_ID_j != 0 and new_mat_ID_j == -1:
            new_mat_ID_j = OffsetNodeIDConvention(jNode_ID, ele_orientation, "j")
 
        if new_mat_ID_i != 0:
            # Create mat i
            iSpring = ModifiedIMKSteelIShape(new_mat_ID_i, section, N_G, L_0 = L_0, L_b = L_b)
            iSpring.Bilin()
 
        if new_mat_ID_j != 0:
            # Create mat j
            jSpring = ModifiedIMKSteelIShape(new_mat_ID_j, section, N_G, L_0 = L_0, L_b = L_b)
            jSpring.Bilin()
 
        new_mat_ID_i = -1 if new_mat_ID_i == 0 else new_mat_ID_i
        new_mat_ID_j = -1 if new_mat_ID_j == 0 else new_mat_ID_j
 
        super().__init__(iNode_ID, jNode_ID, section.A, section.E, section.Iy_mod, geo_transf_ID, mat_ID_i=new_mat_ID_i, mat_ID_j=new_mat_ID_j, ele_ID=ele_ID)
        self.section_name_tag = section.name_tag
        self.UpdateStoredData()
        # Check length
        self._CheckL()
 
 

Member Data Documentation

section

section

Definition at line 923 of file MemberModel.py.

section_name_tag

section_name_tag

Definition at line 958 of file MemberModel.py.

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

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