WORKSHOP 5 IMPORTING CAD GEOMETRY

Importing CAD geometry Problem Statement: In this workshop, you will learn how to import the CAD geometry in Adams/Car. The workshop contains the following sections: Attaching graphics shell (*.shl) file to the part

Importing CAD geometry Attaching graphics shell (*.shl) file to the part: To use a shell file for adding graphics (geometry) to the part, the recommended approach is to first create a part through the Build Menu. Then add the geometry as the next step. This is a little different from Adams/View in which you let Adams/View import the geometry and create the part in a single step. The reason is that creating parts via the Template Builder's Build Menu creates the necessary parameterization for that part. Note: The graphics shell file and any other geometry in different CAD format would not be parameterized.

Importing CAD geometry Attaching graphics shell (*.shl) file to the part (Cont.): The shell file first needs to be saved in the database under the shell_graphics.tbl folder. Once you saves the *.shl file in the database this file is ready to be imported in Adams/Car. For this workshop, the required shell file is already provided in the database - acar_training_MD.cdb\shell_graphics.tbl To import CAD graphics: Open Adams/Car Click on Template Builder mode Select File -> Open and in the Template name dialog box right click to point to <acar_shared>/templates.tbl Select the template rigid_chassis_lt.tpl and click OK Create a marker belonging to the part to which you want to attach the geometry To create a marker, Go to Build -> Marker-> New

Importing CAD geometry To import CAD graphics (Cont.): Enter the details as shown in the Create Marker dialog box. Click OK Go to File -> Import -> Shell

Importing CAD geometry To import CAD graphics (Cont.): The dialog box shown would pop-up. Enter the details as shown in the dialog box. Click OK Note: Since the reference marker and shell graphic belong to the same part, the easiest way to fill out this dialog box is to first use Pick to select the Reference Marker you just created, and copy/paste the part name ._rigid_chassis_lt.ges_chassis. followed by the name of the shell, in this case, “body_shell”.

Importing CAD geometry To import CAD graphics (Cont.): Note: The procedure remains similar when you want to import CAD geometry other than shell format. The CAD formats like IGES (*.igs) and Parasolids (*.xmt_txt) can be imported in the similar fashion by specifying the part name as ._rigid_chassis_lt.ges_chassis. You can however use a shell file that is generated from these IGES and Parasolid formats. The *.igs and *.xmt_txt can be imported into Adams using option (File -> Import) and that could be exported as a Shell geometry ( File -> Export -> Shell) for further use in Adams/Car.