Solver-Specific Export Options

When exporting a model, HyperWorks CFD always tries to use the greatest precision when writing real numbers in small format. The following options allow you to control precision and accuracy in the model.

Remove ‘E’ from real values

OptiStruct and Nastran solvers do not require explicitly writing an E to recognize the proper exponent of a real number, and removing the E allows one more digit of precision to be included. For example, -1.12E-7 becomes -1.123-7.

Round numbers close to zero

With this option, any real numbers in the model whose absolute value is less than the specified value will be written out as zero. For example, if Zero tolerance = 1.0E-12, it means all real values from -1.0E-12 to 1.0E-12 will be exported as 0.0.

Organize non-structural mass

Non-structural mass [NSM1, NSML1] must be referenced in case control for it to be applied in the model.

When turned on, this option automatically collects all non-structural mass entities [NSM1, NSML1] into a NSMADD loadcollector. This loadcollector is then automatically referenced in the NSM GLOBAL_CASE_CONTROL control card. As long as this option is active, it will update the NSMADD loadcollector on every export. If you delete all NSM* cards, this option will delete NSMADD and case control reference along with it.

Adjust RBE3 0.0 weight factor

The default behavior in HyperWorks CFD when exporting RBE3 weight factors is to maintain all values defined by you, even if they have a value of 0.0.

When turned on, HyperWorks CFD will change any 0.0 weight factors on RBE3 elements to the specified small value. This adjustment is done in the exported solver deck only, and the original model values in the current HyperWorks CFD session will not be modified.

Compress Nodes/Element Sets

When turned on, all node sets and element sets in the model are exported with the THRU statement.

Export old contact card

Export Nastran contact cards in old format.

Restriction: Available when exporting Nastran (MSC) files.

Export CORD2 and CORD4 in long format

Exports CORD2/CORD4 in long format to retain the coordinate precision.

Restriction: For Nastran, this option only includes CORD2.

Export Node coordinate in

The model is exported in free format (comma separated format).

Convert CORD1 to CORD2

Exports CORD1 coordinate system as CORD2 coordinate system.

Remove non exported references

When exporting a solver deck, references to any includes are always written to the master model even if the include itself is set to "Do Not Export."