How to import a geometry designed in "Catia" into "patran". What must be the file extension of catia designed file?

Save the file as '.model' for importing to patern.

After designing a model in CATIA first we have to save in as IGES file or STEP file. Then in Patran open File-> import->select IGES or STEP->Tick the box that will ask to convert it in parasolid then press OK the required model will import in PATRAN.

I have used patran but most of the design/analysis softwares should be able to import geometry files in STEP/IGES format. Try to check whether these formats are listed in File->Import command. Hope it helps.

Access the CATIA Database File 1.Once the Patran graphics viewport appears, select Import... under the File menu. A form titled “Import” appears. 2.Change “Object” to “Model”, “Source” to “CATIA”, and “File Type” to “CATIA v4 Model” or CATIA v5 CATPart” for Direct Access or “CATXPRES File” for CATIA Access. 3.Select either a valid CATIA model file (CATDirect) or a valid CATXPRESS intermediate file (CATIA Access). You should see messages in the Patran Command window indicating that the model or intermediate file is being read: CATIA Model File Traversal Completed. The model should now appear in the Patran viewport. 4.If the import fails, check that you are correctly licensed for the product.