Supports

The following kinds of support conditions are possible.

• hinged (the node is able to rotate, but cannot translate)
• roll (the node is able to rotate and translation is allowed in one direction)
• fixed (the node cannot translate and not rotate)
• spring (translation and rotation are allowed but only with a linearly increasing resistance)

add_support_hinged

SystemElements.add_support_hinged(node_id)

Model a hinged support at a given node.

Parameters:node_id – (int/ list) Represents the nodes ID

Example

ss.add_element(location=[5, 1])
ss.add_support_hinged(node_id=[1, 2])
ss.show_structure()

add_support_roll

SystemElements.add_support_roll(node_id, direction=2)

Adds a rolling support at a given node.

Parameters:

• node_id – (int/ list) Represents the nodes ID
• direction – (int/ list) Represents the direction that is fixed: x = 1, y = 2

Example

ss.add_element(location=[5, 5])
ss.add_support_roll(node_id=2, direction=1)
ss.add_support_roll(node_id=1, direction=2)
ss.show_structure()

add_support_fixed

SystemElements.add_support_fixed(node_id)

Add a fixed support at a given node.

Parameters:node_id – (int/ list) Represents the nodes ID

Example

ss.add_element(location=[0, 2.5])
ss.add_support_fixed(node_id=1)
ss.show_structure()

add_support_spring

Example

ss.add_element(location=[5, 5])
ss.add_support_spring(node_id=1, translation=3, k=1000)
ss.add_support_spring(node_id=-1, translation=2, k=1000)
ss.show_structure()

SystemElements.add_support_spring(node_id, translation, k, roll=False)

Add a translational support at a given node.

Parameters:

• translation –

  (int/ list) Represents the prevented translation.

  Note

  1 = translation in x

  2 = translation in z

  3 = rotation in y
• node_id – (int/ list) Integer representing the nodes ID.
• k – (flt) Stiffness of the spring
• roll – (bool) If set to True, only the translation of the spring is controlled.