You can export a mesh to a COMSOL Multiphysics file (.mphbin for a binary file format or .mphtxt for a text file format) or to a NASTRAN file (.nas, .bdf, .nastran, or .dat).
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To open the Export Mesh page on the Mesh toolbar, click Export (
) or right-click the Mesh node and select Export (
) from the menu.
) or right-click the Mesh node and select Export () from the menu.Select a file type among the available formats in the File type list and enter a filename including the path in the Filename field (or click Browse to specify the filename).
Click Export to export a mesh to the specified file. A confirmation message appears in the Messages window.
If you export a mesh to a COMSOL Multiphysics binary (.mphbin) or text (.mphtxt) file, you specify the type of elements to export using the Domain elements, Boundary elements, Edge elements (available in 3D), and Vertex elements (available in 2D and 3D) check boxes under Data to export. By selecting the Geometric entity information check box, the export operation also writes information on the corresponding geometric entity index for each element to the file.
If you export a 2D or 3D mesh to a NASTRAN file, you specify the type of elements to export using the Domain elements and Boundary elements (available in 3D) check boxes. By selecting the Geometric entity information check box, the export operation also writes information on each element’s corresponding geometric entity index to the corresponding property identification field of the resulting NASTRAN file.
Use the Field format list to specify if the output NASTRAN file should be stored in the small field format (single precision), large field format (double precision), or free field format (comma separated). If the mesh to export has been imported from a NASTRAN file and contains second-order elements, you can select the Export as linear elements check box to export the linear element information only.