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Nodal coordinate cards are generated for all nodes in the model. Nodal coordinates are output in the global cartesian system, regardless of the system in which the model was defined in FEMGEN. The nodal coordinates section of the input file is preceeded by the following cards:
* * NODAL COORDINATE CARDS ... *
In beam element models it is often necessary to specify beam orientation vectors using the command 'PROPERTY PHYSICAL ORIENTATE ...'. The interface uses these vectors to create pseudo nodes. The pseudo nodes are added to the end of the nodal coordinates list and refered to later on in the file on the beam element topology cards. One pseudo node is created for each FEMGEN line, and all beam elements generated on that line will have the same pseudo node. The pseudo node coordinates are generated by adding the beam orientation vector to a point mid way between the ends of the line.
When using beam orientation vectors on curved geometries, the vector must be scaled such that the resulting pseudo node is created on the correct side of the line of beam elements. The beam orientation nodes section of the input file is preceeded by the following cards:
* * BEAM ORIENTATION NODES ... *
Node sets can be written to the DYNA3D input file, for the keyword format only, by creating FEMGEN sets with a specific name. The set name must start by the four letters 'NSET' and the remaining 4 characters can be any printable character. User-defined node sets are written at the end of the input file after the following comment:
$ USER-DEFINED NODE SETS ...
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