topic Problem with Extremas with cincomintants in Robot Structural Analysis Forum

Problem with Extremas with cincomintants

gliga — Tue, 28 Jun 2016 10:59:22 GMT

Well,

request is simple and not unusual.

For several similar columns and lot of ULS+ACC code combinations it is necessary to provide

ENVELOPE WITH CONCOMINTANTS

but

ONLY AT BOTTOM END OF COLUMN

(to provide connections for example)

FOR ALL COLUMNS AND ALL CODE COMBINATIONS

In RSAPRO2017 such request resulting in such screen

I am sure that this problem was not present in some of previous versions of RSAPRO

Situations with 2, 3...12 points work fine. Also with default characteristic points (when RSAPRO itself define points)...

???

Sincerely, Gliga

Re: Problem with Extremas with cincomintants

Artur.Kosakowski — Tue, 28 Jun 2016 12:10:00 GMT

Could you attach this model please? Thank you.

Re: Problem with Extremas with cincomintants

gliga — Tue, 28 Jun 2016 15:06:43 GMT

It is model independent problem (I already check) and model is Huge, but OK

https://dl.dropboxusercontent.com/u/20766887/Model.zip

Select bars by section (HCHS 406.4x10), select "Code combinations"

"tables"

"forces"

"table filtered to current selection"

"Envelope",

"Table columns",

"Envelope"

"For all objects"

"Points"

"Characteristic points"

(delete all automatic generated points)

"x=0" (relative)

"Add"

"OK"

This should give Envelopes with concomitants for ALL bars AND only for bottom ends of the bars (columns) - totally 12 rows of data.

Thanks,

Re: Problem with Extremas with cincomintants

Artur.Kosakowski — Wed, 29 Jun 2016 08:20:39 GMT

First of all thank you for notifying us about this situation.

Could you check if this solution works for you?

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.

Re: Problem with Extremas with cincomintants

gliga — Wed, 29 Jun 2016 10:45:07 GMT

Yes, it work - but is not correct

In such results END POINTS exist too (you can check by yourself on same model) - it seems that such selection JUST ADD THAT POINT to beginning and end ones. As a matter affect it seems that you can not exclude START and END points in such selection.

So you can not trust to results until something like "x=0" appear in table, in all rows.

Sincerely

Re: Problem with Extremas with cincomintants

Rafal.Gaweda — Wed, 29 Jun 2016 11:14:41 GMT

Try this macro (it works for one selected node so you need to use it several times to extract all results you need):
http://forums.autodesk.com/t5/robot-structural-analysis/envelope-of-forces-at-a-connection-api/m-p/3701996/highlight/true#M8928

Feel free to modify this macro according to your needs.

Re: Problem with Extremas with cincomintants

Artur.Kosakowski — Wed, 29 Jun 2016 11:41:04 GMT

Yes, indeed you are right. This option adds an additional point to origin and end ones so the result is not the one you'd like to see

Re: Problem with Extremas with cincomintants

gliga — Wed, 17 May 2017 03:04:07 GMT

New version of Robot and same problem?

Are you going to solve this?

Gliga

Re: Problem with Extremas with cincomintants

Artur.Kosakowski — Wed, 17 May 2017 16:35:22 GMT

Hi @gliga

I'm not able to answer if or when as we don't have such knowledge but I can promise that we will post this information when this has been done.