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Distinguished Contributor
refaat
Posts: 121
Registered: ‎09-17-2012
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Only reaction for new model (API)

1114 Views, 22 Replies
10-15-2012 01:21 AM

 Hi sirs

 

 I have large strucutre model  . Can you help me to get only reaction of structure model  and export to a new model of robot to analysis and design only raft foundation?

 

Note : When i saved the raft as (Substructure) , I couldnt do any changes such as (elastic coeficient value). because i will lose every thing .

 

Thanks

Refaat

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Artur.Kosakowski
Posts: 5,075
Registered: ‎12-17-2010

Re: Only reaction for new model

10-15-2012 01:43 AM in reply to: refaat

You may try to use the following approach:

 

1. Calculate the entire model and display reactions in the table for the part you want to analyze in the separate model

2. Convert this table to Excel and modify so that it has the load table arrangement. The goal is to replace reactions with nodal forces for the substructure model

3. Save the substructure with the part of the model you want to design

4. Open the substructure and make the necessary geometrical changes

5. Replace the loads with the modified one from the Excel table

 

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.



Artur Kosakowski
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Rafal.Gaweda
Posts: 5,496
Registered: ‎04-26-2010

Re: Only reaction for new model (API)

10-15-2012 02:08 AM in reply to: refaat

I am attaching Excel file with macro doing that.

Mininmum force value - forces, moments with values lower than indicated (in N) will not be applied to target model.

Let me know if you need more explanations.



Rafal Gaweda
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Distinguished Contributor
refaat
Posts: 121
Registered: ‎09-17-2012

Re: Only reaction for new model (API)

10-15-2012 07:57 AM in reply to: Rafal.Gaweda

Thanks all ,

Dear Rafal

It is great to use this micro for the nodal support case , but I will be very happy if I get help (micro) for my case in the attached file . I want to get the forces and moments in columns and wall then I will use them in separate file(target file) to analysis and design raft foundation only.

 

Thanks a lot

Refaat

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Rafal.Gaweda
Posts: 5,496
Registered: ‎04-26-2010

Re: Only reaction for new model (API)

10-16-2012 12:31 AM in reply to: refaat

This macro transfer reactions from supports but you need something else = different macro, I have such macro but I need to adjust it to your needs. Also model must be modified in certain way.



Rafal Gaweda
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Distinguished Contributor
refaat
Posts: 121
Registered: ‎09-17-2012

Re: Only reaction for new model (API)

10-16-2012 12:34 AM in reply to: refaat

Thanks all ,

 

Dear Rafal

 

It is great to use this macro for the nodal support case , but I will be very happy if I get help (macro) for my case in the attached file . I want to get the forces and moments in columns and wall then I will use them in separate file(target file) to analysis and design raft foundation only.

 

Thanks a lot

Refaat

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Distinguished Contributor
refaat
Posts: 121
Registered: ‎09-17-2012

Re: Only reaction for new model (API)

10-16-2012 12:54 AM in reply to: Rafal.Gaweda

Dear Rafal

 

I very much appreciate your effort, and I'm waiting for the right macro for my case , I will be very happy to get it.

 

Thanks in advance

Refaat

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Rafal.Gaweda
Posts: 5,496
Registered: ‎04-26-2010

Re: Only reaction for new model (API)

10-16-2012 03:50 AM in reply to: refaat

Macro takes internal forces from bottom (geometricaly lower Z coordinate nodes) of selected bars and adds them as loads (transfered to GCS) to target file. It is recommended to keep node numbers the same in both files like in previous macro.

 

So your original model must be changed a little. Wall must be disconnected from slab and connected by bars with very high stiffeness (similar to rigid link). Take a look at attached files



Rafal Gaweda
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Distinguished Contributor
refaat
Posts: 121
Registered: ‎09-17-2012

Re: Only reaction for new model (API)

10-17-2012 12:15 AM in reply to: Rafal.Gaweda

Dear Rafal

 

I would like to greet you for your assistance , and could i know if there is any other way (macro) to get the internal forces in RC walls specially when we have large structure with many RC walls?

 

Thanks

Refaat

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Product Support
Rafal.Gaweda
Posts: 5,496
Registered: ‎04-26-2010

Re: Only reaction for new model (API)

10-17-2012 12:44 AM in reply to: refaat

You can get all results (almost?) from robot by API but I guess you are not looking for internal force results maybe reduced forces.

 

I guess the simplest procedure should be like that:

- from original model copy foundation slab to new file

- remove this slab and apply supports under walls \ columns attached previously to foundation slab, calculate model and save it.

- use macro to transfer reactions as loads into slab only model

- play with slab only model.

- when you are happy with slab results please update slab data in original model and calculate it



Rafal Gaweda
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