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Regarding phenomenon of Lateral torsional buckling (LTB)

 
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akashgondhale966@gmail.co
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PostPosted: Wed Aug 15, 2018 7:30 am    Post subject: Regarding phenomenon of Lateral torsional buckling (LTB) Reply with quote

Hello, Can anyone suggest how, why and when lateral torsional buckling occurs.Also, step by step process for occurrence lateral torsional buckling.
Why compression flanges buckles first?
why does the beam twist?
when does LTB increases?
when does lateral buckling will occurs C & I section? 
when does torsion occurs for C & I section?

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Dr. N. Subramanian
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PostPosted: Thu Aug 16, 2018 3:00 am    Post subject: Re: Regarding phenomenon of Lateral torsional buckling (LTB) Reply with quote

akashgondhale966@gmail.co wrote:
Hello, Can anyone suggest how, why and when lateral torsional buckling occurs.Also, step by step process for occurrence lateral torsional buckling.
Why compression flanges buckles first?
why does the beam twist?
when does LTB increases?
when does lateral buckling will occurs C & I section?
when does torsion occurs for C & I section?

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Dear Mr. Akash

Do you want us to repeat what is found in standard text books. Please buy any standard book and read it.

Best wishes
NS
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b_ajay
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PostPosted: Thu Aug 16, 2018 3:30 am    Post subject: Regarding phenomenon of Lateral torsional buckling (LTB) Reply with quote

U will get answers to all these questions in any standard book. It is basic thing. 

On Wed, Aug 15, 2018, 3:32 PM akashgondhale966@gmail.co (akashgondhale966@gmail.co) <forum@sefindia.org (forum@sefindia.org)> wrote:

Quote:
           Hello, Can anyone suggest how, why and when lateral torsional buckling occurs.Also, step by step process for occurrence lateral torsional buckling.
Why compression flanges buckles first?
why does the beam twist?
when does LTB increases?
when does lateral buckling will occurs C & I section? 
when does torsion occurs for C & I section?
     



     



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aswin.v
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Joined: 23 Jan 2015
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PostPosted: Thu Aug 16, 2018 7:30 am    Post subject: Regarding phenomenon of Lateral torsional buckling (LTB) Reply with quote

DearLateral torsional buckling mainly occurs in beams which are unrestrained which means its compression flanges are free to move laterally.so when the load is applied vertically the it results on the compression and  tension flanges.
Compression flange tries to diaplace and tension flange tries to hold it in the original position.
This causes the twist in the member and thats how member fronts  the lateral torsional buckling.






Regards
Aswin V   


On Wed, Aug 15, 2018 at 3:30 PM, akashgondhale966@gmail.co (akashgondhale966@gmail.co) <forum@sefindia.org (forum@sefindia.org)> wrote:
Quote:
           Hello, Can anyone suggest how, why and when lateral torsional buckling occurs.Also, step by step process for occurrence lateral torsional buckling.
Why compression flanges buckles first?
why does the beam twist?
when does LTB increases?
when does lateral buckling will occurs C & I section? 
when does torsion occurs for C & I section?
     



     



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