Block Format Keyword

/GRSH3N/BOX or /GRSH3N/BOX2 - 3 Node Shell Groups (Box)

Describes the 3 node shell groups which are inside the box.

Only one box_ID is allowed:

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
/GRSH3N/BOX/grsh3n_ID/unit_ID or /GRSH3N/BOX2/grsh3n_ID/unit_ID
grsh3n_title
box_ID

Field	Contents
grsh3n_ID	3 node shell group identifier (Integer, maximum 10 digits)
unit_ID	Optional unit identifier (Integer, maximum 10 digits)
grsh3n_title	3 node shell group title (Character, maximum 100 characters)
box_ID	Box identifier, which is defined in /BOX (Integer, maximum 10 digits)

1.	The 3 node shell groups cannot contain 4 node shell elements (use /GRSHEL instead).

2.	If type is BOX, all elements having all nodes inside the box or on its surface are selected.

If type is BOX2, all elements with at least one node inside the box or on its external surface are selected.

/GRSH3N/BOX or /GRSH3N/BOX2