Inventor General Discussion

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*smjanows
Message 1 of 9 (956 Views)

Mass property calculation could not match requested accuracy

956 Views, 8 Replies
05-05-2009 09:21 AM
I've has Inventor tell me this for thin walled tubes with holes in them, but
not for a simple part like the attached one. Autodesk are you listening
yet? This has been an issue for a long time. Mass calculations for parts
with holes on curves do not work properly. On many parts the error comes up
with "low" selected. By default each time I try to save the file, the error
window pops up.
*smjanows
Message 2 of 9 (955 Views)

Re: Mass property calculation could not match requested accuracy

05-05-2009 09:21 AM in reply to: *smjanows
IV 2009 SP2 BTW

wrote in message news:6177043@discussion.autodesk.com...
I've has Inventor tell me this for thin walled tubes with holes in them, but
not for a simple part like the attached one. Autodesk are you listening
yet? This has been an issue for a long time. Mass calculations for parts
with holes on curves do not work properly. On many parts the error comes up
with "low" selected. By default each time I try to save the file, the error
window pops up.
*smjanows
Message 3 of 9 (955 Views)

Re: Mass property calculation could not match requested accuracy

05-05-2009 09:23 AM in reply to: *smjanows
Sometimes it occurs with "Very High" as well.

wrote in message news:6177043@discussion.autodesk.com...
I've has Inventor tell me this for thin walled tubes with holes in them, but
not for a simple part like the attached one. Autodesk are you listening
yet? This has been an issue for a long time. Mass calculations for parts
with holes on curves do not work properly. On many parts the error comes up
with "low" selected. By default each time I try to save the file, the error
window pops up.
Employee
Yijiang.Cai
Posts: 357
Registered: ‎05-20-2008
Message 4 of 9 (956 Views)

Re: Mass property calculation could not match requested accuracy

05-06-2009 01:22 AM in reply to: *smjanows
Thanks for your nice post!

This issue has been filed as #1109251 in our tracking system.

-River
Thanks,
River Cai

Inventor Quality Assurance Team
Autodesk, Inc.
Valued Mentor
Rich.O.3d
Posts: 525
Registered: ‎08-19-2008
Message 5 of 9 (934 Views)

Re: Mass property calculation could not match requested accuracy

09-06-2010 04:41 PM in reply to: Yijiang.Cai

Im getting this error too...its a pain in the **** ...every time I save my assembly this error box pops up a heap of times (one for every part in the assy that has a hole on a pipe at an angle to the pipe centreline (Im modeling pipe launders in a process plant so theres lots of em)....Is there still no fix for this?????

CAD Management 101:
You can do it your own way,
If its done just how I say!
[Metallica:And Justice For All:1988]
Product Support
Daren.Lawrence
Posts: 193
Registered: ‎11-04-2003
Message 6 of 9 (898 Views)

Re: Mass property calculation could not match requested accuracy

09-08-2010 02:06 PM in reply to: Rich.O.3d

The ID that River mentioned has been resolved and solves this issue with the release of Inventor 2011 which includes the new Autodesk Shape Manager (ASM). Thank you.



Daren Lawrence
Product Support Specialist
MFG Support - Inventor
Autodesk, Inc.


http://beinginventive.typepad.com/being-inventive/
Mentor
CAD-One
Posts: 715
Registered: ‎10-26-2008
Message 7 of 9 (364 Views)

Re: Mass property calculation could not match requested accuracy

12-21-2011 09:35 AM in reply to: Daren.Lawrence

I still see this issue in INV 2012.

I dont think this has been solved. Has it?

C1
Inventor Professional 2013
Vault Collaboration 2013
Distinguished Contributor
wseaston
Posts: 204
Registered: ‎03-04-2009
Message 8 of 9 (274 Views)

Re: Mass property calculation could not match requested accuracy

06-18-2012 06:31 AM in reply to: CAD-One

Autodesk - What is going on here??!

 

I am also running Inventor 2012. Professional 64 Bit SP2 and I am having the same problem. Why is it mentioned that the problem has been solved in a previous version of Inventor only to find it returning in a new release?

 

Come on....

Product Support
bobvdd
Posts: 542
Registered: ‎11-23-2005
Message 9 of 9 (264 Views)

Re: Mass property calculation could not match requested accuracy

06-18-2012 08:33 AM in reply to: wseaston

There could be circumstances where the shape of the part is too complex for the ASM kernel to calculate mass properties with very high precision. Especially check if you have any complex surfaces or surfaces of bad quality in your part (for instance due to import from other CAD systems).

To find out if we are talking about a defect or not we need a copy of your files. Thanks.

 

Bob

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