/XREF
Block Format Keyword Describes the reference state for elements belonging to a part, using given nodal coordinates.
Format
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| /XREF/part_ID/unit_ID | |||||||||
| xref_title | |||||||||
| Nitrs | |||||||||
| node_ID | X | Y | Z | ||||||
Definitions
| Field | Contents | SI Unit Example |
|---|---|---|
| part_ID | Part
identifier (Integer) |
|
| 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. (Integer) |
|
| X | X
coordinate. (Real) |
|
| Y | Y
coordinate. (Real) |
|
| Z | Z
coordinate (Real) |
Comments
- 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.
- Reference state is available:
- for shells using law /MAT/LAW19 (FABRI) or /MAT/LAW58 (FABR_A)
- for 4-node tetrahedron elements and 8-node bricks using Isolid =1, 2 or 24 and Iframe =2 (co-rotational formulation) and material laws /MAT/LAW35 (FOAM_VISC), /MAT/LAW38 (VISC_TAB), /MAT/LAW42 (OGDEN) or /MAT/LAW70 (FOAM_TAB)