Importing and exporting table extrapolation options

Pre/Post honors the extrapolation options that you specify for data in a table field. This software imports and exports the EXTRAP field for the following Nastran table bulk data entries:

• TABLEM1, TABLEM2, TABLEM3

• TABLED1, TABLED2, TABLED3

• TABLEST

In Pre/Post, you can use the options in the Values Outside Table list in the Table Field dialog box to control whether Nastran extrapolates the starting and ending data points.

• If you select Undefined or Extrapolate, Simcenter Nastran extrapolates the two starting data points to obtain the table look-up when x < xi, and extrapolates the two ending data points to obtain the table look-up when x > xi. These options set the EXTRAP field to EXTRAP=0 when you export or solver your input file.

• If you select Constant, Simcenter Nastran uses the value of the table field at the starting data point for the table look-up when x < xi, and use the value of the table field at the ending data point for the table look-up when x > xi. This option sets the EXTRAP field to EXTRAP=0 when you export or solver your input file.

Prior to release 11, Pre/Post did not import or export the EXTRAP field.

Note:

If you solve an input file that contains the EXTRAP field in Simcenter 3D 11 or later releases, the results may differ from a solve that you run for the same input file in NX 9 or NX 10. This difference occurs because Simcenter Nastran extrapolates the data points by default while Pre/Post sets the data points to a constant value by default.

Where do I find it?

Application	Pre/Post
Prerequisite	A FEM or Simulation file as the work part and displayed partSimcenter Nastran or Simcenter 3D Multiphysics as the specified solver
Menu	File→Import→Simulation****File→Export→Simulation

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

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Importing and exporting table extrapolation options, Simcenter 3D 2021.1 Series

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