×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

Insert Plates and WRC-107

Insert Plates and WRC-107

Insert Plates and WRC-107

(OP)
When modeling an insert plate at a Nozzle you can generally determine the required size of the insert plate for nozzle reinforcement by setting the "User Specified Limit of Reinforcement" in the Nozzle dialog/area screen.

However, it appears that when you add external nozzle loads and run WRC-107 or FEA calculations Compress does not take into account the "User Specified Limit of Reinforcements".  The WRC-107 results are analyzed using the "Local Shell Thickness" given for the insert plate regardless of the diameter of this insert plate.  The FEA results assume the entire vessel is the thickness of the insert plate and no discontinuity is shown at the insert plate and vessel shell seam.

WRC-107 Appendix A-5 limits taking credit for the thickness of the insert plate unless the width of the insert plate is equal to or greater than 1.65*(RT)^.5.  Compress does not appear to take this limit into account.

I fear that this approach leads many designers into a false assurance that their nozzle is designed sufficiently when, in fact, it may not be.

Tom, I would appreciate your comments on this matter.  Or if anyone else has come across this situation and has any input, please reply.

 

RE: Insert Plates and WRC-107

The "local thickness" option was intended for purposes of modeling a local thickness around the nozzle that was subjected to a different local corrosion or erosion; it was not planned for purposes of modeling an insert plate.

The local thickness option can be used to model an insert plate for purposes of area replacment, etc. However, as you describe there are considerations in WRC-107 that may not be treated in this approach.

Some time back I added a request to our program development list for a more complete treatment of insert plates. Unfortunately, this is not high on the priority list.

  Tom Barsh
  Codeware Technical Support

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

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. 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