Re: Moment calculation

From: <Tony>
Date: Wed Jun 30 2004 - 01:32:00 EDT

The concept of in-plane and out-plane, once understood, is simple, but during the process of understanding can be complicated, additionally, there is often confusion when interpreting pipe stress program results.

Rahul wrote, "The concept of inplane is the moment in the plane in which the piping is." While this is conceptually correct, the direction the in-plane moment vector points is normal to the plane of the piping. For example, an inplane moment for an elbow or tee defined geometrically, completely in the X-Y plane, points in the Z direction, or in a direction that is "out-of-the-plane" of the geometry. Out-of-plane moments for a 90 degree elbow running in the X and Y directions are in the X direction for the Y leg, and in the Y direction for the X leg. Out-of-plane moments for a 90 degree branch connection whose header is in the X direction and whose branch is in the Y direction are in the X direction for the branch, ann in the Y direction for the run. If the branch is a lateral then there are several possible interpretations for the out-of-plane direction, while the in-plane moment direction is clear.

Regards,
A.Paulin

• Original Message ----- From: "Gang Cvg" <cvg_gang@yahoo.com> To: <PipingDesign@yahoogroups.com> Sent: Wednesday, June 30, 2004 12:13 AM Subject: Re: [PipingDesign] Moment calculation

> Yes, I agree with Rahul. The classical book under
> reference is "Kellog". Good luck!
> Regards.
> C. V. Gangadharan.
> --- Rahul Kulkarni <rdk77@yahoo.com> wrote:
> > Hi
> > The concept of inplane is the moment in the plane in
> > which the piping is. and Out of plane is
> > perpendicular to that.
> > It is like the bending moment is resolved in to
> > these two components.
> > The methods you are reading are bases on bisic SOM.
> > But the methods now a days are used are based on
> > single dim. FEA. Caser II is the software best for
> > the application.
> > Calog (i hope the spell is correct) is the best
> > book. One of the topic towads the end of the book
> > explains the method in short.
> > Rahul
> >
> >
> >
> > RAHUL DEEPAK KULKARNI
> > GHARKUL 36 MANISHANAGAR
> > PANDHARPUR
> > PIN 413304
> > RDK77@YAHOO.COM
> >
> > ---------------------------------
> > Do you Yahoo!?
> > Yahoo! Mail is new and improved - Check it out!
> >
> > [Non-text portions of this message have been
> > removed]
> >
> >

>
>
>
>


> __________________________________

> Do you Yahoo!?
> New and Improved Yahoo! Mail - Send 10MB messages!
> http://promotions.yahoo.com/new_mail

>
>
>


> =========================================

> PipingOffice - Excel Spreadsheets for Piping Calculations
> http://www.pipingoffice.us/
> =========================================
> Main site: http://www.pipingdesign.com

>

> Yahoo! Groups Links

>
>
>
>
>
>

Received on Wed Jun 30 01:32:00 2004