Discussion Groups

Robot Structural Analysis

Reply
Active Member
Sangduan
Posts: 9
Registered: ‎09-18-2012

Steel slederness ratio limit, Lambda, max per Eurocode

1160 Views, 4 Replies
09-18-2012 11:51 AM

Dear All,

Does anyone know the equation for calculating Lambda, max per Eurocode?

My section fails global stability check as the section slenderness ratio about z axis,Lambda,z, is larger than Lambda, max value.

I have tried to look for the equation in the code, but I am totally unlucky.

Attached please find the calculation note printed from Robot.

The global stability check in on the last page.

Thank you in advace and appreciate any helps.

Sangduan

 

Please use plain text.
Product Support
Rafal.Gaweda
Posts: 5,604
Registered: ‎04-26-2010

Re: Steel slederness ratio limit, Lambda, max per Eurocode

09-19-2012 05:37 AM in reply to: Sangduan

As it is written, point 6.3.1.2.

 

Max(Lambda,y/Lambda,max ; Lambda,z/Lambda,max) - means max of calculated slendernesses is found and presented

Lambda,max - from Configuration

 

maxsl.jpg

 

 

lambda.jpg



Rafal Gaweda
Please use plain text.
Active Member
Sangduan
Posts: 9
Registered: ‎09-18-2012

Re: Steel slederness ratio limit, Lambda, max per Eurocode

09-20-2012 12:37 AM in reply to: Sangduan

Thank you Rafal for your answer.

Sangduan

Please use plain text.
Distinguished Contributor
Tuctas
Posts: 202
Registered: ‎10-10-2012

Re: Steel slederness ratio limit, Lambda, max per Eurocode

03-07-2013 09:24 AM in reply to: Sangduan

  A max value of slenderness is defined only in EC8, 6.7.3 for members of braces (if anyone have seen a similar limitation for slenderness in EC3 it would be helpful for this issue).

 

  Rafal, the window of configuration that you attached is different than the one that is displayed on me..(?)

Please use plain text.
Product Support
Rafal.Gaweda
Posts: 5,604
Registered: ‎04-26-2010

Re: Steel slederness ratio limit, Lambda, max per Eurocode

03-08-2013 02:46 AM in reply to: Tuctas

 

  A max value of slenderness is defined only in EC8, 6.7.3 for members of braces (if anyone have seen a similar limitation for slenderness in EC3 it would be helpful for this issue).

 

You are right there is no lambda limit in EC3.

You may set it as high as you like.

 

 

  Rafal, the window of configuration that you attached is different than the one that is displayed on me..(?)


 

Different code (norm) polish vs EN



Rafal Gaweda
Please use plain text.