0 mass shown in an assembly
0 mass shown in an assembly
(OP)
I have an assembly composed of parts that have a definitive weight- on the order of 70 lbs. When I look at the top level assembly with these parts in it and ask for the weight of the assembly on the mass properties button, it calculates the weight at 0 lbs. Has anyone seen this before? Could I be doing something wrong? I have tried Cntrl Q, save, to no avail.
Pete
Pete






RE: 0 mass shown in an assembly
Are the parts solid (vs. surface bodies)?
Is density in the part files properly set?
Free macro and addin available that sets density for multiple components in an assembly:
<http://www.esoxrepublic.com/freeware/index.html>
http://www.EsoxRepublic.com
RE: 0 mass shown in an assembly
RE: 0 mass shown in an assembly
2) Does each part "weigh " correctly when selected individually from within in the assy?
3) Do you have the same problem with other assemblies on your computer?
4) Do you have the same problem with the assy on a different computer?
5) Do all the parts become highlighted in the grapics area when using the Mass properties tool?
6) Have you tried a Repair of SW?
RE: 0 mass shown in an assembly
1) Each part weighs correctly in its own window
2) Each part weighs correctly when selected in the assembly
3) There are no other problems with other assemblies
4) The same problem exists on other computers when trying to find the mass of this assembly
5) All the parts become highlighted
6) Have not tried a repair, but it seems very unlikely this is the cause. The machine I am running just had a fresh install of 2004 SP 3.0 on it as it is a brand new machine.
RE: 0 mass shown in an assembly
Let us know what you find.
RE: 0 mass shown in an assembly
Pete Yodis
Harold Beck and Sons
RE: 0 mass shown in an assembly
Save it either as
1) Exterior Components
Or
2) All Components
Worth a try at this point IMO.
Regards,
Scott Baugh, CSWP
http://www.3dvisiontech.com
http://www.scottjbaugh.com
If you are in the SW Forum Check out the FAQ section
To make the Best of Eng-Tips Forums FAQ731-376
RE: 0 mass shown in an assembly
RE: 0 mass shown in an assembly
RE: 0 mass shown in an assembly
if I could only reach my bat-belt....
In the mass properties window, make sure the assembly is shown as selected. If it is not selected, select the top level from the icon in the feature manager tree and hit the "Recalculate" button.
One more thing to try...
Make a new temporary assembly, and put your current assembly into the new assembly as a component and see if you can get mass props that way.
http://www.EsoxRepublic.com
RE: 0 mass shown in an assembly
On a similar vein to TheTicks suggestion & as a very quick check, start a new assy & just drag & drop all the parts (en masse) into it. Don't worry about mating the parts ... just get a collection of parts & then try the Mass properties.
BTW, how many mates are in the problem assy? If there is more than 300 in the Top Level assy, that's where your problem may be. How does the size & number of mates of the problem assy compare with others that are OK?
RE: 0 mass shown in an assembly
Pete
RE: 0 mass shown in an assembly
Regards,
Scott Baugh, CSWP
http://www.3dvisiontech.com
http://www.scottjbaugh.com
If you are in the SW Forum Check out the FAQ section
To make the Best of Eng-Tips Forums FAQ731-376
RE: 0 mass shown in an assembly
I guessed it would be at the part level hence the first question in my first post ... anyway I'm glad you found the problem.
For future reference, rather than "supressing parts & sub-assemblies one at a time and checking the top level weight", you could add a Mass properties column to a BOM & have it list all the parts. Using indented format, you will be able to simply read off the individual weights of all the parts & easily spot a weightless one.
RE: 0 mass shown in an assembly
Pete