×
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

Modelling Lap joint with HSFG Bolts In MSc Nastaran

Modelling Lap joint with HSFG Bolts In MSc Nastaran

Modelling Lap joint with HSFG Bolts In MSc Nastaran

(OP)
Greetings,
Iam trying model a Lap joint with High strength frcition grip bolts in Nastran. My intrest is to get the frictional frces developed between the two plate interfaces. Could any one suggest me as to how i can go about modelling and what element i need to use for the same. The plates are subjected ti inplanes  forces.
thanks in advance
regards
raj

Raj

RE: Modelling Lap joint with HSFG Bolts In MSc Nastaran

There are no special elements that will model bolted joints in nastran as far as I am aware. There are two approaches:

1. Use a beam representing the bolt with contact gaps between the mating surfaces of the joint. Friction is created when the beam has a preload applied. This will probably have to be done with temeratures, rather than a direct force. This is a reliable method but the greatest difficulty is getting the basic Nastran contact element to converge with friction. Make sure you have enough disk and RAM.

2. Model the geometry of the bolt and the surrounding region in solid elements. This will take a lot longer. Contact gaps will still be required and there will be many more interfaces to consider. The preload will still have to be applied somehow.

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