Block Format Keyword Generates a group of nodes by listing the first and last nodes IDs in the range with a user-defined increment value.


Generate a list of entities that starts with first_ID and includes entities every Incr after first_ID until last_ID.
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
first_ID last_ID Incr              


Field Contents SI Unit Example
grnd_ID Node group identifier

(Integer, maximum 10 digits)

unit_ID Unit Identifier

(Integer, maximum 10 digits)

grnd_title Node group title

(Character, maximum 100 characters)

first_ID First node identifier in the list.


last_ID Last node identifier in the list.


Incr Increment value of the list generation from first_ID to last_ID.

Default = 1 (Integer)



  1. Node groups are used to define secondary nodes of rigid walls, interfaces, rigid bodies or nodes to which a load is applied, like a concentrated load or a fixed velocity.
  2. The group includes first_ID, first_ID+Incr, first_ID+2*Incr, first_ID+3*Incr, … continuing through last_ID.
  3. Multiple first_ID, last_ID, and Incr lines can be defined in one block.