×
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

MSC Nastran CELAS1 strain energy

MSC Nastran CELAS1 strain energy

MSC Nastran CELAS1 strain energy

(OP)
Sorry for the cross posting, but I'm a bit new to this.

I have an embarrasingly simple linear static model with a small number of CELAS1 liner springs and forces.  It's simple enough to solve by hand.  The results for external work, displacements, SPCs, element forces and strains is all fine, but the grid force balance and element strain energies are not.  I have grid force balances that are not in equilibrium and strain energy not equal to external work!!  There are no DMIG entries and cannot think of any other way I am screwing it up.  Surely there isn't anything this simple fundemantally wrong with the code??  Has anybody ever had similar problems?

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