Model.element3Dshiftnodes#

Model.element3Dshiftnodes(element_entity_3d, mode, shift_value, first_node_entity, last_node_entity, second_node_entity, element_entity_2d)#

This function reorders the nodes in 3D elements based on various modes.

Parameters:

element_entity_3d (Entity) – The object describing the 3D element entity to reorder.
mode (int) –
Determines how the nodes are reordered.

1 - Reorder the nodes as defined by the shift_value argument (2 digit value).

2 - Reorder the nodes defined by 3 nodes in the 3D element. The first_node_id, last_node_id and second_node_id arguments define the new base face.

3 - Reorder the nodes by referencing a face element defined by the element_id_2D argument.

4 - Reorder the nodes as defined by the shift_value (1 digit value) and first_node_id arguments.
shift_value (int) – When mode=1, this is a 2 digit integer. The first digit defines the element’s new base face index, while the second defines the index of the new first node for that face. When mode=4, this is a 1 digit integer. The digit defines the element’s new base face index.
first_node_entity (Entity) – The object describing the first node entity in the reordered 3D element, when mode=2, or the first node in the new base, when mode=4.
last_node_entity (Entity) – The object describing the last node entity in the reordered 3D element base face, when mode=2.
second_node_entity (Entity) – The object describing the second node entity in the reordered 3D element base face, when mode=2.
element_entity_2d (Entity) – The object describing the 2D element entity to use as the base face for the reordered 3D element. The first node of this 2D element becomes the first node of the 3D element.

Examples#

Reorder nodes in hexa element with ID 213 so that the first node of the third face becomes the element ‘s first node#

import hm
import hm.entities as ent

model = hm.Model()

model.element3Dshiftnodes(
  element_entity_3d=ent.Element(model, 213),
  mode=1,
  shift_value=31,
  first_node_entity=ent.Element(model, 0),
  last_node_entity=ent.Element(model, 0),
  second_node_entity=ent.Element(model, 0),
  element_entity_2d=ent.Element(model, 0),
)

Reorder nodes in hexa element with ID 213 so that the face contain nodes with IDs 137 , 138 , and 139 becomes the hexa ‘s base face :#

import hm
import hm.entities as ent

model = hm.Model()

model.element3Dshiftnodes(
  element_entity_3d=ent.Element(model, 213),
  mode=2,
  shift_value=0,
  first_node_entity=ent.Element(model, 137),
  last_node_entity=ent.Element(model, 138),
  second_node_entity=ent.Element(model, 139),
  element_entity_2d=ent.Element(model, 0),
)

Reorder nodes in hexa element with ID 213 so that its quadrilateral face element with ID 94 becomes the hexa ‘s new base face , and quad 94 ‘s first node becomes the hexa ‘s first node#

import hm
import hm.entities as ent

model = hm.Model()

model.element3Dshiftnodes(
  element_entity_3d=ent.Element(model, 213),
  mode=3,
  shift_value=0,
  first_node_entity=ent.Element(model, 0),
  last_node_entity=ent.Element(model, 0),
  second_node_entity=ent.Element(model, 0),
  element_entity_2d=ent.Element(model, 94),
)

Reorder nodes in hexa element with ID 213 so that node with ID 94 of the third face becomes the hexa ‘s first node#

import hm
import hm.entities as ent

model = hm.Model()

model.element3Dshiftnodes(
  element_entity_3d=ent.Element(model, 213),
  mode=4,
  shift_value=3,
  first_node_entity=ent.Element(model, 94),
  last_node_entity=ent.Element(model, 0),
  second_node_entity=ent.Element(model, 0),
  element_entity_2d=ent.Element(model, 0),
)