topic Re: Shell buckling in Robot Structural Analysis Forum

Macro with incremental buckling combination

Konrad.O — Fri, 10 Jan 2025 08:22:53 GMT

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

(API) Buckling combination

Anonymous — Tue, 16 Jul 2013 15:17:05 GMT

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

Re: Shell buckling

Rafal.Gaweda — Tue, 16 Jul 2013 11:02:36 GMT

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.

Re: Shell buckling

Rafal.Gaweda — Tue, 16 Jul 2013 15:16:26 GMT

Have fun!

Attached

Re: Shell buckling

Rafal.Gaweda — Fri, 19 Jul 2013 07:12:23 GMT

Update 1

Avoiding launching calculations several times - suitable for larger models.

Re: Shell buckling

Anonymous — Tue, 14 Oct 2014 09:53:11 GMT

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.

Re: Shell buckling

Rafal.Gaweda — Tue, 14 Oct 2014 10:42:55 GMT

The purpopse of this macro is:

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

Re: Shell buckling

Anonymous — Tue, 14 Oct 2014 10:48:06 GMT

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.