ABAQUS Tutorial: Buckling of a trunecated composite cone under axial compression

[@milichikini]

Thanks a lot for all your videos, I've checked all of them, it's been so useful!

[@reginawagnerbiolife7867]

This is a structure of my PHD dissertation

[@hnrwagner]

What kind of shell buckling analysis do you want to see next ? comment below

[@Pk01121992]

nonlinear buckling of same problem

[@hnrwagner]

@@Pk01121992 look at 11:00, there are the results of an nonlinear analysis

[@milichikini]

2. When we have a linear analysis we apply a load (-1N) to find the critical load where the buckling occurs, But in the non-linear case why we use a displacement (-1 mm) - I supposed it due displacement that you apply in your test- isn't it?

[@hnrwagner]

in non-linear analysis we evaluate the reaction force and usually buckling occurs for this thin shell within 1 mm of displacement, this is due to experience. for thicker shells one should use 10 mm

[@milichikini]

Finally, why you found the same critical load in both cases if in the non-linear analysis we are consider a imperfection, we supposed the load should be minor due this imperfection?

[@hnrwagner]

because the imperfection is very very small. For an imperfect buckling load which may be suitable as a design load you need to apply different methods. Like: SBPA: kzbin.info/www/bejne/bWWbpJ1oot1-btE LRSM: kzbin.info/www/bejne/j3y6lpKfibJ2o7s SPLA: kzbin.info/www/bejne/m6fLm52pirWdrdk

[@AE99_Felicis...]

@@hnrwagner Hello. The video is restricted(LRSM,SPLA). Can you provide access?

[@hnrwagner]

@@AE99_Felicis... should work now

[@AE99_Felicis...]

@@hnrwagner Thank you very much.

[@milichikini]

Hello Dr. Ronald, I have some questions. 1. When we are doing a buckling analysis we can use the half of the geometry, when it is symmetric?

[@hnrwagner]

could be use but not if you want to introduce some kind of imperfection