×
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

Contact Section for Threads of a Bolt

Contact Section for Threads of a Bolt

Contact Section for Threads of a Bolt

(OP)
Dear Alls,co

When a contact section for modeling the threads of a bolt is created, does this section is assigned to contact elements only or target elements as well. The recommendation is to select bolt surface as a contact surface and bolt hole surface as a target surface.


Thanks for your input.

RE: Contact Section for Threads of a Bolt

The guidance for contact target selection is based on the guidelines provided in this link

Also refer this link for bolt thread simulation.

RE: Contact Section for Threads of a Bolt

(OP)
Thank you very much, Sir
Very useful information.

RE: Contact Section for Threads of a Bolt

(OP)
Dears,

I need some clarifications regarding the ANSYS Bolted Joint analysis methodology, when the Bolt thread behavior is approximated by creating the Bolt Sections and assigning these to contact elements which is defined between Bolt threaded portion and the hole.

- When the Bolt threads are modelled by the Bolt Section simulation method by assigning the bolt section to contact elements, what diameter of the Bolt cylinder of treaded section is used upon which the contact elements with Bolt section assignment are laid.
The parameters to define the Bolt Section are given below,

Dm = Mean pitch diameter, dm
P = Pitch distance, p
ALPHA = Half-thread angle, α
N = Number of starts (defaults to 1)
X1, Y1, Z1, X2, Y2, Z2 = Two end points of the bolt axis in global Cartesian coordinates

Is the diameter of the cylindrical surface representing the threaded portion of the Bolt will be Minor Diameter of the threads or the major diameter of the bolt?
- The FEA stresses with elastic material model at the first threads engagement are very high, much higher than the yield strength of the material, does the elastic plastic material model will give the more realistic results at the first few threads engagement.

Thanks for our help and valuable input.

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! Already a Member? Login


Resources


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