×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Different results for beam3 and beam188

Different results for beam3 and beam188

Different results for beam3 and beam188

(OP)
hello,
I tried to use ansys13 to study the effect of self weight on a Cantilever Beam, by following this tutorial: http://www.mece.ualberta.ca/tutorials/ansys/IT/Density/Density.html. But I used beam188 as beam3 is no longer supported in ansys13, and I defined a rectangular section (B=50,h=10) instead of defining real constants (which is not possible for beam188). Instead of obtaining a 5.77 mm deflection (result found in the tutorial), I obtained a 0.22 mm deflection!! I tried to modify beam188 options, but I obtained the same result :(
Can you explain that? Is that due to the difference between beam3 and beam188? or there is a parameter that I should fix?
Thanks for your answers.

RE: Different results for beam3 and beam188

Is this a student problem?

Mike McCann
MMC Engineering

 

RE: Different results for beam3 and beam188

Quote:

he doesn't understand the difference between the two elements.

I doubt that differences in the beam formulation would account for a difference in deflection of that magnitude.  Since the ratio of the deflections is very close to 386/9810, I'd be looking at the units used for specifying the accelleration due to gravity.

Doug Jenkins
Interactive Design Services
http://newtonexcelbach.wordpress.com/
 

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources