Plik .ach jest skompresowanym plikiem zawierającym wszystkie pliki modelu wraz z wynikami bądź nie. Plik .ACH jest podobny do .ZIP i może być czytany za jego pomocą.

Plik archiwalny jest tworzony w środowisku ALGORa lub Superdraw:

1. W środowisku CAD, FEA Editor, Superview IV lub Report, wybierz z menu "File/Archive/Create". W Superdraw, "File:Archives:Create...". W momencie wybranie tej opcji Pojawi się okno wyboru, jak poniżej:

1. Pod "Included Files", są dwie opcje: "Model Only" (tylko model) oraz "Model and Results" (model i wyniki). Wybierz jedną z tych opcji.

An archive created with the "Model Only" option will contain the geometry files and the complete .MOD folder (which contains the nodes, elements and input under the Model Data Control window or the FEA Editor model tree) for the current model. The archive will have the same name as the current model. If this type of archive is used, the analysis would need to be performed before any results could be viewed.

An archive created with the "Model and Results" option will include all the same files as the "Model Only" option (the naming convention is the same as with the "Model Only" option) plus ALGOR results and supplemental files you created such as image files, spreadsheets and programs. Any files that you do not want included should be renamed or removed from the model directory before this type of archive is created.

1. Select the "OK" button and an .ACH file will be made.

This archive can later be retrieved in any of the ALGOR software environments by using the "File:Archive:Retrieve�" command sequence or by using the "File:Archives:Retrieve�" command sequence in Superdraw. 

Thus, the archive is the most convenient method of storing old models or sending a model to another ALGOR user.

For more information about archiving models, see the ALGOR User's Guide.