Block Format Keyword Builds a group of triangles (/TRIA) by providing direct triangle identifiers.


Enter selected items numbers (any number may be input, 10 per Line)
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
item_ID1 item_ID2 item_ID3 item_ID4 item_ID5 item_ID6 item_ID7 item_ID8 item_ID9 item_ID10


Field Contents SI Unit Example
grtria_ID Group identifier

(Integer, maximum 10 digits)

unit_ID Unit Identifier

(Integer, maximum 10 digits)

grtria_title Group title

(Character, maximum 100 characters)

item_ID1, item_ID2, …, item_IDn List of triangle identifiers




  1. The 2D solid triangle groups cannot contain 2D solid quadrangles (use /GRQUAD instead).
  2. If item_ID is a negative number, the item number is deleted from the group.