buckling analysis of a supported-supported beam

[mbindustry]

Hello everyone,
I am a mechanical engineering student struggling with this exercise and I hope you can clarify my doubts.

From the sixth load condition, the values calculated with the Eulerian critical load do not approach (they have too high deviation) with those calculated by the software with the beam 188 element.

I think I have some problems maybe in assembling the constraints correctly.

the version of softeware is 17.2

I carried out the exercise as follows:
[CUT] long list making it difficult to read the discussion

 

[lucadileta]

View attachment 46294Hello everyone,
I am a mechanical engineering student struggling with this exercise and I hope you can clarify my doubts.

From the sixth load condition, the values calculated with the Eulerian critical load do not approach (they have too high deviation) with those calculated by the software with the beam 188 element.

I think I have some problems maybe in assembling the constraints correctly.

the version of softeware is 17.2

I carried out the exercise as follows:

blah blah blah.

hi mbindustry, a post like you presented it you hardly will have answer. post 300 apdl code lines hoping someone will read it and find the error in your place doesn't make sense. you must show a collaborative approach, analyze the code to pieces and avoid inserting unnecessary strings in order to resolve the problem. Also ansys apdl allows you to easily try the block code and see what happens. In a nutshell the juice is you have to put on your own if you want to be helped.

greetings

♪

 

[mbindustry]

Thank you very much for the advice I will treasure it for the next few times, fortunately I have solved, perhaps it is the case to close the discussion.

 

[lucadileta]

Thank you very much for the advice I will treasure it for the next few times, fortunately I have solved, perhaps it is the case to close the discussion.

figurati mbindustry in good luck for studies.

 

[gerod]

No.
forum rules are clear!
If you solved, maybe tell us how you did it, this is the spirit of the forum.
I deleted the list because it didn't help reading the discussion.
Thank you.

 

[mbindustry]

I simply repeated everything I had done, but instead of using the 188 I used the beam 4, which although not present in the library of the elements in reality I found that inserting it as string in the bar I gave it. with 188 I could not bind it well I think because I had too many degrees of freedom for knot, while using the other element was easier. It's been time since I did the exercise I don't remember exactly how I bind, but these days I place some screens.