Assembly mass in LOD versus View representation.

[HarryP108]

I have read that LOD's should be used only where large assemblies are being worked with - for reasons of computer performance. I occasionally work with assemblies where I require a "Tare" mass and a "Gross" mass. 

In this case simply using a View Rep where the visibility of a part or machine is turned off still gives me the Gross mass. ie the mass with the part or machine still in the assembly. Should I be using an LOD or is there a better way?

Regards.

[blair]

Use View-Reps as much as possible. There are other aspects as in the IDW environment that use View-Reps and not LOD. As you have mentioned about the Gross-Mass.

LOD is primarily intended as a memory foot-print reduction tool for large assemblies.

[HarryP108]

Currently use view reps in my idw's.

The view rep, unless I am doing soemthing wrong, does not give me an updated mass when I turn visibility off of some parts. eg gross mass 3500 kg. Turn visibility of slurry pump off - gross mass still 3500 kg. How can I get around this? What am I doing incorrect?

Regards. 

[Dennis_Jeffrey]

View reps affect visibility, mass is calculated on all components

LOD affects suppression. mass is not calculated on suppressed parts If No is selected during suppression phase. See attached:

[HarryP108]

So how would you get around my problem?

Regards.

[Dennis_Jeffrey]

I would use the LOD and suppress the parts you do not want to calculate in mass properties. Create a new LOD for this purpose and select the No option for calculations.  Here's a 2012 example & files attached.

[HarryP108]

As I suspected.

Thank you.

Regards.