mearure bodies

[moog2]

I want to measure the mass of an assembly, (analysis, measure bodies)i think the default will use steel as a reference material?
Can i window select and say, inherit from one particular component which has a material assigned to EG. aluminium, so that it tells me what the assembly would weigh if it were all in aluminium?

 

[hudson888]

If I understand you correctly I don't think that you can do that.

Best Regards

Hudson

www.jamb.com.au

Nil Desperandum illegitimi non carborundum

 

[mlamping]

You can't edit components in an assembly assuming the assembly is the work PRT. Assigning materials to the components would require editing of the component PRT files. So you should really assign the material to the component solid/sheet bodies in the PRT files they were created in.

However you can do the following in the assembly file to perform this calculation:

1. Make the assembly file the work PRT
2. Promote all solid bodies into the assembly
3. Assign your material to the promoted solid bodies
4. Perform the mass calculation
5. Undo back to the step before the promotion in 2.

You can also use WAVE links in place of promotion. If you use WAVE links, then after step 2 you'd want to hide or suppress all components in the assembly.

 

[smermet]

Hi,

It seems that the management of materials, requires to have the license.

But my solution is :
1° - Mass properties + Keep measure.
2° - Blank the "body mesurements" on part navigator.
3° - Create a tab on drafting
4° - Select tab.
4° - Right button on tab > Edit Using spreedsheet.
5° - Type : density + associative volume¹
6° - Enter formula for multiplication (density x associative volume).
7° - Enter formula for total weight.
8° - Exit spreedsheet.

See .prt on attachement (NX4).

¹ for associate volume use this formula : =exprval("p??")

 

[JohnRBaker]

What did you mean by:

"... the management of materials, requires to have the license."

And as for your proposed workflow, why invoke the spreadsheet? You can do all of that in the Expression system and save yourself a lot of wating around for Excel to launch and then to close after you're done. Now don't get me wrong, linking NX to a spreadsheet can bring some very powerful tools to bear on a problem, but for what you're suggesting, it's like killing flies with a sledge hammer.

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA

http://www.siemens.com/plm

http://www.plmworld.org/museum/

To an Engineer, the glass is twice as big as it needs to be.

 

[smermet]

I could be wrong, but we work with a NX4 MACH3 licence, and she doesn't allow us to attribute differents materials and densities by parts...

Not use the spreadsheet : do not allow to make the multiplication and addition formulas... if you have solution to make it without spreadsheet, i'm very interested, because as you say spreadsheet is heavy to used for this simple tasks...

Regards.

 

[JohnRBaker]

I don't know what you're referring to when you say that NX 4.0 requires an extra module for adding material and density to a model. I just tested NX 4.0 and I was able to use the...

Tools -> Materials Properties...

...and there was no additional license required other then Solid Modeling.

As for the Spreadsheet comment, the built-in Expression system is more than capable of creating any sort of formula which you would like with all of the standard mathematical operators as well as pre-defined math operators such as trig functions, as well as a large number of engineering functions, like motion and beam deflections, etc.

Anyway, for what it appears that you're attempting to do, the built-in function of NX should be more than adequate and you should need nothing more than the basic Solid Modeling module.

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA

http://www.siemens.com/plm

http://www.plmworld.org/museum/

To an Engineer, the glass is twice as big as it needs to be.

 

[smermet]

Hi John,

Thanks, i found the materials assigment...

But for spreadsheet, for me, it seems better and faster to use this way than the expressions....

Regards

 

[JohnRBaker]

Fine, that's why we've included that capability.

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA

http://www.siemens.com/plm

http://www.plmworld.org/museum/

To an Engineer, the glass is twice as big as it needs to be.

 

[moog2]

thanks guy's i'll wave link into the assy & do it there