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


Abaqus frequencies

Abaqus frequencies

Abaqus frequencies


I have some problems with calculations in Abaqus. I am trying to calculate free vibrations. I consider plate ( section - shell), simply supported plate. I want to check the impact of forces subjected in the edge of the plate (graph2) on first four frequencies mode (graph 2). Unfortunetaley, if I change the value of the force it doesnt show any change in the result of mentioned frequencies. I don't know how can I change the options in Abaqus to obain expected results. Any your help would be extremely appretiated.

Best regards,

RE: Abaqus frequencies

Hi Martyna,

Please correct me if I misinterpreted your attached picture. But it seems to me that you are applying loads to edges that - through boundary conditions - are not allowed to deform. Maybe you could move the loads to just inside the edge of the slab, or change the boundary conditions?

I also have to ask, just out of curiosity: Are you expecting the natural frequencies to change? Is the idea that normal forces would change the stiffness of the system?

Good luck!

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!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close