Block Format Keyword Describes the reference state for elements belonging to a part, using given nodal coordinates.


(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
node_ID X Y Z      


Field Contents SI Unit Example
part_ID Part identifier


unit_ID Unit Identifier

(Integer, maximum 10 digits)

xref_title Reference title.

(Character, maximum 100 characters)

Nitrs Number of steps from reference to initial state.

If Nitrs is increased, Enhanced reciprocity is obtained.

Default = 100 (Integer)

node_ID Node identifier.


X X coordinate.


Y Y coordinate.


Z Z coordinate




  1. Multiple /XREF entries are allowed in Radioss input, even with different reference coordinates for the same nodes belonging to different parts. Reference metric will be applied to shell and solid elements only. The list does not need to contain all nodes of a part. If no coordinates are given for a node, initial coordinates are used instead. Also, if nodes not belonging to the specified part are listed, they will be ignored.
  2. Reference state is available: