## Autodesk Robot Structural Analysis

Distinguished Contributor
Posts: 139
Registered: ‎06-14-2011

# Tables - Sum of values

168 Views, 5 Replies
02-27-2012 01:36 AM

What does "sum of val", "check val" precision mean? What does it show?

Does Sum val(ue) give me the sum of forces responsable for the reactions?

Product Support
Posts: 2,532
Registered: ‎04-26-2010

# Re: Tables - Sum of values

02-27-2012 01:43 AM in reply to: AlexDT

Check this help topic:

http://docs.autodesk.com/RSA/2012/ENU/filesROBOT/GUID-E272460D-0B05-4F80-AF78-D6D9501131F-818.htm

Rafal Gaweda
Product Support
Autodesk, Inc.
Distinguished Contributor
Posts: 139
Registered: ‎06-14-2011

# Re: Tables - Sum of values

Thanks! Sum of value is still not very clear to me though.

"Sum of val. - An arithmetic sum of values of forces and moments for a given direction for the currently-filtered nodes."

Sum of what values and which direction?

Product Support
Posts: 2,532
Registered: ‎04-26-2010

# Re: Tables - Sum of values

02-27-2012 02:48 AM in reply to: AlexDT

Take a look below:

- selection in green

- direction = columns (yellow, blue)

Rafal Gaweda
Product Support
Autodesk, Inc.
Distinguished Contributor
Posts: 139
Registered: ‎06-14-2011

# Re: Tables - Sum of values

Thanks. It is simply the total of the reactions of the selected nodes then?

In my case I selected all the nodes, but the the sum of value for the moments are not  equal to the sum of forces.

In fact I changed all my supports to pinned so I didnt have any moments in them, but the sum of reaction for those nodes still remain? I dont get how that adds up.

Product Support
Posts: 2,532
Registered: ‎04-26-2010

# Re: Tables - Sum of values

02-27-2012 04:28 AM in reply to: AlexDT

So either you have elastic supports  \ ground on model or you are looking on nonconverged results of nonlinear case.

Example below

Rafal Gaweda
Product Support
Autodesk, Inc.