×
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

ASME VIII-1 Appendix 2 Flange Stresses

ASME VIII-1 Appendix 2 Flange Stresses

ASME VIII-1 Appendix 2 Flange Stresses

(OP)
What exactly are meant by tangential stresses in the context of Appendix 2. I've just done some calculations but I'm trying to understand what direction these stresses act in. Are these the forces caused by the inward bending of the flange due to the bolt load?

RE: ASME VIII-1 Appendix 2 Flange Stresses

I assume you're referring to the tangential flange stress ST in Mandatory Appendix 2 of ASME VIII-1?

If so, check the definition of moment Mo in 2-3 and 2-6. Also, Figure 2-4 shows you the forces and lever arms that are considered when calculating Mo...and then ST.

Note these calculations are design calculations only and not stress analysis calculations.

RE: ASME VIII-1 Appendix 2 Flange Stresses

BenStewart,

Can you explain further what you mean by "Note these calculations are design calculations only and not stress analysis calculations."?

Thanks.

RE: ASME VIII-1 Appendix 2 Flange Stresses

Masters2788 - search through the archives of this forum, and read lots of technical papers on the subject. BenStewart's quotation is exactly correct.

Search and ye shall find...

RE: ASME VIII-1 Appendix 2 Flange Stresses

Thanks for the information TGS4... sorry I did not look first.

RE: ASME VIII-1 Appendix 2 Flange Stresses

(OP)
BenStewart - Thanks for that, I'll take a look.

RE: ASME VIII-1 Appendix 2 Flange Stresses

Look in the document ASME PTB-4-13. It provides very good explanations to Code rules with some corrected exercises. (see exercise 4.16)

RE: ASME VIII-1 Appendix 2 Flange Stresses

Quote:

Look in the document ASME PTB-4-13.

You mean ASME PTB-4-2013, chapter 4.16?

RE: ASME VIII-1 Appendix 2 Flange Stresses

Prex explained it nicely to me

When you try to have a ring rotate about its circumferential center line, half of the section goes towards outside and the other half towards inside. The part that displaces towards outside undergoes an elongation and thus tension stresses, the opposite of course the other half. So the section is under bending and displays tangential stresses.
prex
http://www.xcalcs.com : Online engineering calculations
http://www.megamag.it : Magnetic brakes and launchers for fun rides
http://www.levitans.com : Air bearing pads

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