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





Which criteria to check when analysing an expansion joint using caesar II, displacement, Stresses and what else ?
Ad regarding displacement do i have to make sure that displacement in occasional load cases are within allowable values or i only need to cheek them in oparting and expansion load cases ?

Thank you in advance


Yes you have to check your stresses and displacements as main priority. And one more thing that you need to be careful.You must consider THRUST LOADING being generated inside expansion joint while system pressure affects effective diameter of expansion joint.

You need to see manufacturer catalog which will probably have Axial,Transverse, Angular stiffness values. It must also have Effective ID(Internal Diameter)value on that. Effective ID will be used in pressure thrust calculation. It is very important because due to big Thrust Force, the expansion joint can open up and damage itself and other piping items when it is not properly supported.

Please also check your displacements on the side nodes of the expansion joint and make sure if it is within the allowable Expanding/Compressing limit compared to Max/Min operating lengths shown in manufacturer's catalog.


Ramil Abbaszade
Stress Engineer

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!


White Paper: Industrial Control Basics: Contactors
A contactor is an electrical device used for switching an electrical circuit on or off. Considered to be a special type of relay, contactors are used in applications with higher current carrying capacity, while relays are used for lower current applications. Download Now
Research Report: State of IoT Adoption in Product Development 2019
This research report, based on a survey of 234 product development professionals, examines the current state of Internet of Things (IoT) adoption by product design teams, its perceived importance, and what features and capabilities teams consider important when making decision about adding IoT functionality to their products. Download Now

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