Calculating assembly weight

CATIA can give you the weight of assemblies with parts of different materials. You must analyze each part independently, store the results for the parts and then combine the results to get the final assembly weight, center of gravity, etc. Call up your solid assembly model. Go to the analysis/inertia/compute menu. Pick one solid; enter the material density of the part; hit yes to store the results. Do this operation to all the solids that you need in the assembly model.

Now go to the combine sub-function in the analysis/inertia menu. Pick the solids that you have computed and stored the results for. (Steps 2, 3, etc.) [Note: If you did not calculate the inertia for each individual part solid, that solid will not be included in the combination to get the final result.] If your alphanumeric window is open, you will see the information change as you pick the solids. The selected solids will highlight, so you won't make the mistake of re-picking them.

When you're done picking the solids, at the bottom of the alphanumeric window you will get the final results. It will be the final entry in the alphanumeric window, so be careful what you read from it, since there is no distinction between the final result and the previous results.