Frame Analysis

Frame Analysis

class feastruct.fea.frame_analysis.FrameAnalysis(nodes, elements, nfa)

Bases: feastruct.fea.fea.FiniteElementAnalysis

Parent class for a frame analysis.

Includes a method for analysis initiation and a method for adding a frame element to the analysis.

Variables:

• nodes (list[Node]) – Nodes used in the finite element analysis
• elements (list[FrameElement]) – Elements used in the finite element analysis
• nfa (list[bool]) – Node freedom arrangement

__init__(nodes, elements, nfa)

Inits the FrameAnalysis class.

Parameters:

• nodes (list[Node]) – List of nodes with which to initialise the class
• elements (list[FrameElement]) – List of elements with which to initialise the class
• nfa (list[bool]) – Node freedom arrangement

create_element(el_type, nodes, material, section)

Creates and returns a frame element and adds it to the Frame object. Refer to ‘xxx’ for the possible element types.

Parameters:

• el_type (string) – String characterising the type of frame element
• nodes (list[Node]) – List of node objects defining the element
• material (Material) – Material object for the element
• section (Section) – Section object for the element

Returns:

FrameElement object

Return type:

FrameElement

create_node(coords)

Creates a node and adds it to the Fea object.

Creates and returns a Node object and adds it to the Fea object.

Parameters:coords (list[float]) – Cartesian coordinates of the node ([x], [x, y] or [x, y, z]) Returns:Node object Return type:Node

get_node_lims()

Finds and returns the minimum and maximum x, y and z values within the current analysis.

Returns:(xmin, xmax, ymin, ymax, zmin, zmax) Return type:tuple(float)

Frame Analysis2D

class feastruct.fea.frame_analysis.FrameAnalysis2D(nodes=None, elements=None)

Bases: feastruct.fea.frame_analysis.FrameAnalysis

Parent class for a 2D frame analysis.

Includes a method for analysis initiation and a method for adding 2D frame elements to the analysis.

Active degrees of freedom are [x, y, rz] and are referred to as [0, 1, 5].

Variables:

• nodes (list[Node]) – Nodes used in the finite element analysis
• elements (list[FrameElement]) – Elements used in the finite element analysis
• nfa (list[bool]) – Node freedom arrangement
• post (feastruct.post.post2d.PostProcessor) – Post-processor object

__init__(nodes=None, elements=None)

Inits the FrameAnalysis2D class.

Parameters:

• nodes (list[Node]) – List of nodes with which to initialise the class
• elements (list[FrameElement]) – List of elements with which to initialise the class

create_element(el_type, nodes, material, section)

Creates and returns a frame element and adds it to the Frame object. Refer to ‘xxx’ for the possible element types.

Parameters:

• el_type (string) – String characterising the type of frame element
• nodes (list[Node]) – List of node objects defining the element
• material (Material) – Material object for the element
• section (Section) – Section object for the element

Returns:

FrameElement object

Return type:

FrameElement

create_node(coords)

Creates a node and adds it to the Fea object.

Creates and returns a Node object and adds it to the Fea object.

Parameters:coords (list[float]) – Cartesian coordinates of the node ([x], [x, y] or [x, y, z]) Returns:Node object Return type:Node

get_node_lims()

Finds and returns the minimum and maximum x, y and z values within the current analysis.

Returns:(xmin, xmax, ymin, ymax, zmin, zmax) Return type:tuple(float)

Frame Analysis3D

class feastruct.fea.frame_analysis.FrameAnalysis3D(nodes=None, elements=None)

Bases: feastruct.fea.frame_analysis.FrameAnalysis

Parent class for a 3D frame analysis.

Includes a method for analysis initiation and a method for adding 3D frame elements to the analysis.

Active degrees of freedom are [x, y, z, rx, ry, rz] and are referred to as [0, 1, 2, 3, 4, 5].

Variables:

• nodes (list[Node]) – Nodes used in the finite element analysis
• elements (list[FrameElement]) – Elements used in the finite element analysis
• nfa (list[bool]) – Node freedom arrangement

__init__(nodes=None, elements=None)

Inits the FrameAnalysis3D class.

Parameters:

• nodes (list[Node]) – List of nodes with which to initialise the class
• elements (list[FrameElement]) – List of elements with which to initialise the class

create_element(el_type, nodes, material, section)

Creates and returns a frame element and adds it to the Frame object. Refer to ‘xxx’ for the possible element types.

Parameters:

• el_type (string) – String characterising the type of frame element
• nodes (list[Node]) – List of node objects defining the element
• material (Material) – Material object for the element
• section (Section) – Section object for the element

Returns:

FrameElement object

Return type:

FrameElement

create_node(coords)

Creates a node and adds it to the Fea object.

Creates and returns a Node object and adds it to the Fea object.

Parameters:coords (list[float]) – Cartesian coordinates of the node ([x], [x, y] or [x, y, z]) Returns:Node object Return type:Node

get_node_lims()

Finds and returns the minimum and maximum x, y and z values within the current analysis.

Returns:(xmin, xmax, ymin, ymax, zmin, zmax) Return type:tuple(float)