Block Format Keyword With user-defined orthonormal matrix, a group node coordinate could be transformed (rotation, translation and symmetry) in global reference system.


(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
grnd_ID M11 M12 M13 Tx sub_ID
  M21 M22 M23 Ty  
  M31 M32 M33 Tz  


Field Contents SI Unit Example
transform_ID Transformation identifier

(Integer, maximum 10 digits)

unit_ID Unit Identifier

(Integer, maximum 10 digits)

transform_title Transformation title

(Character, maximum 100 characters)

grnd_ID Node group identifier. 5


Mij Orthonormal Matrix value.

Default = 0.0 (Real)

Tx Translation along global X direction.


[ m ]
Ty Translation along global Y direction.


[ m ]
Tz Translation along global Z direction.


[ m ]
sub_ID Submodel identifier.




  1. The translated coordinates are the matrix multiplied by the initial coordinate plus the global translation given by Tx, Ty and Tz.

    Figure 1.

    The matrix is orthonormal and with this option it allows coordinate rotation, translation and symmetry, but does not allow scaling or shear.

  2. A transformation can not apply to a node group and a submodel at the same time.
  3. If the transformation is done on a submodel, all the options of this submodel are transformed.
  4. A node can not be transformed both in a submodel and a node group.
  5. Transforms applied to node groups via grnd_ID only transform the nodal coordinates. Material directions for orthotropic materials and boundary conditions such as initial velocity, imposed movement are not transformed. To provide a complete transformation, the /TRANSFORM card should reference a //SUBMODEL and not a node group.