XANSYS Forum Index
    Register    

FAQ    Search    Memberlist    Usergroups    SmartFeedSmartFeed    Profile    Log in
[APDL] Shell281 vs shell93 stress results
 
This forum is locked: you cannot post, reply to, or edit topics.   This topic is locked: you cannot edit posts or make replies.    XANSYS Forum Index -> XANSYS
Author Message
mariusz.milewski
User


Joined: 04 Nov 2014
Posts: 24

PostPosted: Thu Sep 03, 2015 7:39 am  Reply with quote

Hello all

My model is thin walled cylinder loaded axially with compression force at the top. Bottom has all DOF constrained. I would like to get circumferential stresses and stresses in direction of cylinder height. It is linear, static analysis.

Initially I used shell281 elements, however, I got very strange results of circumferential stresses: distribution of stresses around cylinder was not even as expected and magnitude of stress was 10e3 smaller than expected.

To compare results I made 2nd model with shell93 legacy element. Results seem more reliable and match my expectations. In both cases I have been comparing results using SHELL,TOP and defaults key options.

My questions are:
*why legacy element yields correct results while up-to-date shell281 does not?
*are default key options sufficient in this case or they require adjustment?

I read HELP on shell281 but I havent found anything to explain my results. I have also tried different loading on my model to compares stresses however circumferential stresses seem incorrect.

I will appreciat any suggestions or refrences. Thank you
:wink:
_________________
Mariusz Milewski
Aalborg University, Denmark
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
This forum is locked: you cannot post, reply to, or edit topics.   This topic is locked: you cannot edit posts or make replies.    XANSYS Forum Index -> XANSYS
All times are GMT - 7 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group

sleek template created by Andrew Charron