Extended mesh validity checking during import (Nastran and ANSYS)

When you import a Nastran .dat or .op2 file, or when you import an ANSYS input file, select Extended from the Data checking list (Processing Options group in the Import Simulation dialog box) to have the software check for the existence of each node on a given element in your input file. If any of an element's nodes are missing from the input file, the software:

• Does not import the element.

• Issues an error message when it first encounters an element with missing nodes. For ANSYS input files, the software lists all elements that have invalid entities, such as missing or invalid real constant values, as well as missing nodes, as shown below:**** WARNING **** The following elements have invalid data: (Element) |(Material)|   (ET)   |    (R)   |(Section) |  (ESYS)  | (Nodes)       272 |          |          |        3 |          |          |       294 |          |          |        3 |          |          |  25,26       646 |          |          |       17 |          |          |

• Clearly lists that the element failed to import in the Analysis of Import report as shown below.

If you do not select this option, when you import a Nastran or ANSYS input file in which even a single node is missing, the import operation appears to proceed normally, though the software does not import the mesh.

Note:

Using the Enable extended data checking option can increase the processing time for importing an input file, particularly in larger models.

Where do I find it?

Application	Pre/Post
Menu	File→Import→Simulation

Learn more

Importing RBE2 and RBE3 elements

Understanding imported Nastran constraints

Understanding the import of Nastran SETs

Import of SPOINT bulk data entries

Importing and exporting table extrapolation options

Exporting and importing CBEAM and CBAR elements with the OFFT field

Importing physical property data as element-associated data

Managing element conflicts when appending a Nastran input file

Look up more details

Importing Nastran data

Import for connection elements

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Extended mesh validity checking during import (Nastran and ANSYS), Simcenter 3D 2021.1 Series

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