Macro with incremental buckling combination

[Konrad.O]

WIP

A copy of the archived "Macro with inceremental buckling combination" topic:

http://forums.autodesk.com/t5/Autodesk-Robot-Structural/API-Buckling-combination/td-p/4331271  

[Anonymous]

Hello, 

Can Robot do a buckling analysis of a shell structure with several combinations BUT to only give the critical load with the augmentation of only one load from combination (example, a structure with self-weight and wind action, give critical load only on respect to the increase of the wind load)?

Thank you

[Rafal.Gaweda]

Can Robot do a buckling analysis of a shell structure with several combinations BUT to only give the critical load with the augmentation of only one load from combination (example, a structure with self-weight and wind action, give critical load only on respect to the increase of the wind load)?

Once I had such API macro.

I will try to find it.

[Rafal.Gaweda]

Have fun!

Attached

[Rafal.Gaweda]

Update 1

Avoiding launching calculations several times - suitable for larger models.

[Anonymous]

Hi,

I have tried the Macro but it doesn't seem to work.

My intention was to keep one load case constant (say the selfweight) and determine the buckling factor for a live load case. The Macro seems to give the buckling factor for both. For example;

1.0 x Basic case + 1.0 x Case for increment  ----- say buckling factor of 15 (the Macro considers 15 time the Basic case + 15 times the Case for increment).

Thanks.

[Rafal.Gaweda]

The purpopse of this macro is:

"....BUT to only give the critical load with the augmentation of only one load from combination"

[Anonymous]

Hi Rafal,

I thought the intention is to;

Can Robot do a buckling analysis of a shell structure with several combinations BUT to only give the critical load with the augmentation of only one load from combination (example, a structure with self-weight and wind action, give critical load only on respect to the increase of the wind load)?

Cheers.