Warning : the distibuted load are not assigned correctly on the floor

[giyotd]

Hey ,

I have done two different models on Robot for the same project on both i am having different warning.

the first one : It is necessary to divide tapered bar to calculation elements for non-linear analysis.

the second : the distibuted load are not assigned correctly on the floor.

Please can you help.

[Rafal.Gaweda]

I am afraid you have attached wrong model.

Model is linear and has no tappered sections at all.

[StefanoPasquini6790]

Hi,

You can try to use a user defined prcision parameter for model generation. You ca do this:

A) enter in the model definition dialog;
B) in the lower part of the label, you can find the precision factor automatically setted in 0,1 mm, then change this value to user defined and try to increase it. Start with 1mm and go on as well as you find the desired result (correct distribution of load).

If the problem is the non planarity of cladding/panel, you have to divide it in triangles.

Good luck and greetings.

[giyotd]

Hey,

Thanks for the help,

I fixed it, but i have another concern i have a steel roof and as you can see in my model that the steel beams are connected to the wall,

Should I release them?

If yes which option do  I have to use? I am still new with these things 🙂

Thanks again

[StefanoPasquini6790]

Hi,

If your connection is between steel and concrete you can use this software:

https://www.hilti.it/profis-anchor

Obviously you have to download it in your language. I find that this is a very very helpful tool.

Greetings

[giyotd]

hey I dont have to design the connections neither to show them on my model,

I just need to precise the release type between my steel member ( beam) and the wall .

I wish I can upload it but it's 8 mb

[Rafal.Gaweda]

http://forums.autodesk.com/t5/Robot-Structural-Analysis/Sending-bigger-files/td-p/3795062

[giyotd]

http://www.filemail.com/d/qkapoobkvzxvoud

Hope it's working

[giyotd]

Whenever i am releasing the beams i am getting unstability of type 6

[Rafal.Gaweda]

Whenever i am releasing the beams i am getting unstability of type 6

To see normal types of instabilities - use Automatic Solver or use v 2014 or 2015 version

[Rafal.Gaweda]

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@Rafal.Gaweda wrote:

Whenever i am releasing the beams i am getting unstability of type 6

To see normal types of instabilities - use Automatic Solver or use v 2014 or 2015 version

---

Ignore it or correct model to get rid of short caclulation elements:

[giyotd]

This is my updated model where I am getting the instability warning

http://www.filemail.com/d/biszvwgxcphgzqg

Is it fine that I ignore it?

Regards,

George

[Rafal.Gaweda]

I do not think you have corrected errors shown by me.

Corrected model here : http://we.tl/IV9befMkC5

[giyotd]

Really thank you rafal but can you tell me what did you exactly do.

[Rafal.Gaweda]

Nodes moved to beams

[giyotd]

Hey,

whenever i precise the self weight to be taken for the whole structure should I precise the elements in the list or Robot will directly consider the self weight for the whole structure?

Regards,

George

[Rafal.Gaweda]

No if sw is set to Whole Structure (done automaticaly if first dead load case is created), check Loads table

[giyotd]

Thanks,

another question if i need to add some point load to my slab, but they will be isolated nodes,

Is it fine?

in the attached pics you can see my nodes added stated as isolated (img1)

then i have done the load to mass conversion, and i got the following (img 2)

what does this mean and what are these values obtained on my points added>?

[Rafal.Gaweda]

In such case panel must me meshed = with finite elements

[giyotd]

Rafal,

I am having different values in the axial forces acting on the truss comparing with my hand calculation almost the half  i have drawn them as beams does make any difference? Please if you can help

http://www.filemail.com/d/ynkejqmtelbpzat

 though i am having very close values for the columns

Regards,

George