Data Groups

Data groups define the data to be written out to a partial FES file.

Each data group must have a unique group name. Repeating the same group name for more than one data group can result in erroneous FES files or errors when writing out FES files. A group name is denoted by having an asterisk, "*", leading the group name line, followed by 1-12 data type lines. A data group for shell or solid element data groups contains stress or strain tensors for nodes or elements. A valid data group can contain only one type of data – either stress or strain. A data group cannot have inconsistent data such as, stress and strain data in the same data block.

For instance, a data group for a shell/solid element contains the following components:

•	Normal stress/strain along X

•	Normal stress/strain along Y

•	Normal stress/strain along Z

•	Shear stress/strain XY

•	Shear stress/strain YZ

•	Shear stress/strain XZ

When a results file is loaded into HyperView, the Fatigue Manager displays only those data group names for which all component results are available. Only one data group can be selected at a time. When a particular data group is selected, the Fatigue Manager exports all associated data type information (stress or strain) from HyperView to the FES file.

Examples on how to create Nastran and Abaqus data groups are provided in the sections Data Groups for hmabaqus Results Files and Data Groups for hmnast Results Files. Data groups for any other solver can be constructed in a similar fashion.

Select one of the following to view the data groups for the HyperMesh results files generated with the hmnast or hmabaqus results translators.

Data groups for hmabaqus results files

Data groups for hmnast results files