Apply Fire Load

[IMAN MANSOURI]

Hi,

I followed the video of fire analysis of the I-section.
When I want to apply a “Point Load” and click the “Temperature” the load case is blank and the defined fire curve does not appear (please see attached photo).

Could you please help me?

Thank you so much.

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[IMAN MANSOURI]

Here I attache the file…

[NextFEM Admin]

Yes, tutorial has been made with v1.4 – it will be out in a few days.

[NextFEM Admin]

Version 1.4 is out, please reinstall and retry.

[IMAN MANSOURI]

Hi,
Thanks for providing the new version :)
Can we apply a desired/especial fire profile to the section? If so, how?
And in the tutorial video, only the nodes of bottom edge was exposed to fire. Is there any particular reason for this? I think in the realistic fire, we apply temperatures to all faces of the section; right?

Good luck!

[NextFEM Admin]

Hello,
strenght under fire of the section is controlled by conductivity and specific heat – you can always add another layer for fire protection with different properties. There’s a sample here (in Italian): https://www.nextfem.it/it/analisi-termica-di-sezioni-in-c-a/

In the tutorial, we supposed the bottom edge was the only one exposed. This is a typical situation for a beam. For columns, all edges are exposed. You can apply fire on any edge.

[IMAN MANSOURI]

Hello,
Thanks for your support.
I am going to apply a fire profile according to Eurocode 3 relations corresponds to the following fuel load, opening and thermal properties of enclosure: qtd=160, O=0.032, b=1000.
Sorry I could not understand how should I import it in NextFEM. Could you please guide me?

[NextFEM Admin]

From Edit / Functions…, pick the series you want to add from Add new series menu.
Then click on Add in the “Series Tools” box, and again Add button in the “Add Function by points” box.

The function must be associated to the HT analysis in Assign/Analysis settings.
Hope this helps

[NextFEM Admin]

See this sample.

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[IMAN MANSOURI]

Thanks!

[IMAN MANSOURI]

Hi,
How can we save the history results of heat transfer analysis of the section (save at each time)?
Is it possible to save a txt file (time-temperature)?

[NextFEM Admin]

Extract data/Nodal temperature for now does not allow to get temperature series over time, but it can export for the same time all nodes. This feature proposal will be inserted in the list for the next patch.

[IMAN MANSOURI]

Many thanks for your support.
Excuse me, in the heat transfer analysis of a section how can we consider the effect of fireproofing or no-fireproofing?

[NextFEM Admin]

Simply add a “layer” (made with some elements) with other caracteristics, representing the fireproofing.

[Sepide Arian]

This is also my question. Could you please provide more details about adding the layer, schematically?

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