×
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

Boundary condition

Boundary condition

Boundary condition

(OP)
Hello,

  I analyze a part with rigid (fixed in all 6 dof) boundary conditions. But in reality, there will be some translational movement(3 directions), say around 1 mm. Is it possible to simulate this condition. How to specify. My solver is abaqus.

Thanks for your time.

fembig

RE: Boundary condition

Use directional springs with low stiffness along the direction of motion until the 1mm is reached and then a much higher stiffness.  This can be done with a curve truss element if Abaqus' spring element doesn't allow non-linear properties.  (Sorry, not familiar with Abaqus).

If you are doing a linear analysis, you may be able to use a gap element.

If you are doing non-linear analysis, you can use some type of impact plane or set up a "wall" for the part to contact when it moves 1mm.

I'm sure there are a couple of other options...but this is what comes off the top of my head.

Garland E. Borowski, PE
Borowski Engineering & Analytical Services, Inc.
Lower Alabama SolidWorks Users Group
Magnitude The Finite Element Analysis Magazine for the Engineering Community

RE: Boundary condition

Use Abaqus's connector elements. There is a preassembled property for a bushing - you can define linear/nonlinear properties for just about everything you can imagine (elasticity, plasticity, damping, failure, stop, lock, damage...)

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