×
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

Prestretching

Prestretching

Prestretching

(OP)
How to stretch a circular part uniformly? Thank you in advance!

RE: Prestretching

Apply a uniform displacement.

RE: Prestretching

(OP)
Thanks corus! But how do I go about doing that?

RE: Prestretching

(OP)
Hi IceBreakerSours, thanks for the help. I did so and in the next step of my analysis, I wish to fix the periphery in all translational degree of freedom but was prompt with an error saying some nodes have displacement constraints simultaneously when the job is submitted. What should I do to rectify this error?

RE: Prestretching

Hi,

When applying displacements/constraints to your periphery node set did you specify two different coordinate systems (cylindrical/global)? ABAQUS doesn't like that, and will give you an error like the one you described.

Good luck,
Dave

RE: Prestretching

(OP)
Hi Dave,

Thank you so much for replying. My modeling involves two steps. In step one, I prestretched the part by applying uniform displacement on the periphery nodes in radial direction. In step 2, I wish to fix the prestretched periphery nodes (in all translational degree of freedom) and apply a pressure on it. I propagated step 1 to step 2 and specified the same cylindrical coordinates in both steps but was prompt with the error.

Please help. Thanks in advance!

RE: Prestretching

There are ways to do this directly in the input deck but I suspect you are beginner so I suggest the following: Check the Boundary condition manager and simply propagate the displacement BCs to the next step. And, in the load manager, apply a pressure in step 2 on the surface of interest.

*********************************************************
Are you new to this forum? If so, please read these FAQs:

http://www.eng-tips.com/faqs.cfm?fid=376
http://www.eng-tips.com/faqs.cfm?fid=1083

RE: Prestretching

Create a boundary condition for the periphery of the disk. With a cylindrical coordinate system apply the radial displacement and restrain the remaining 5 DOFs. In the second step apply a pressure load.

I hope this helps.


Rob Stupplebeen
OptimalDevice.com
My LinkedIn

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