XANSYS Forum Index
    Register    

FAQ    Search    Memberlist    Usergroups    SmartFeedSmartFeed    Profile    Log in
Contact in Modal (vibration) Analysis
 
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
hassan.kazi
User


Joined: 14 Jan 2016
Posts: 1

PostPosted: Fri Jan 15, 2016 11:06 pm  Reply with quote

Hi Everyone
I have a relatively large and complicated model for modal analysis. Below are the links which shows an isometric, partially zoomed and sectional view.

http://www.4shared.com/photo/ph2N8Wq1ce/iso.html
http://www.4shared.com/photo/Mek37Lefba/section.html
http://www.4shared.com/photo/vBXgVJiIba/zoom.html

It includes couple of motors, channels, checker plates, I-beams etc and, as such, lots of contacts. Contact by nature is non-linear and contact stiffness is not constant depending on if the mating parts are pushing against each other or are separating. ANSYS will allow either bonding option (the mating parts are bonded in both direction or in the normal direction) which will not be realistic especially when you have so many contacts. In reality, conatct may not be even perfect.

Our experience indicates that bonded options seems to yield results significantl;y off from field measurement through impact test.

I was wondering what will be thr most realistic approach of addressing this problem? I will highly appreciate any help or suggestions.

Thank you very much.
Back to top
View user's profile Send private message
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