We've created small tool to check mass of the model and update it. Tool was created for internal use and now we decided to share it with other Femap users.
The idea is quite simple: material mass is updated by changing density. In Femap it's possible to change density but we think it's better to define new mass for material (and density will be calculated automatically).
Benefits of the tool are that you can modify multiple materials at once. Moreover tool displays changes and new overall mass but modifications are not done in Femap until you press Apply button.
You can download Mass Tuner setup or portable version using link below(registration is not required). Also there is explanation how tool works:
Any comments are appreciated.
Hope tool will be handy for you.
We used to function the way you describe to tune mass, however we've switched to NSM/NSML cards now that FEMAP deals with them perfectly. This goes for NASTRAN users only though, I have no idea how other solvers deal with this.