Factor B in UG-23

[capablanca]

I am interested in knowing more on the theory behind
Factor B in UG-23.It seems that is formula that accounts for buckling,thus reducing allowable compressive stresses.
Does anybody can help me on this?
Thanks,anyway.

 

[capablanca]

Me again.
My interest is to know more on:
1.Rationale behind the ASME 8,Div 1 procedure for
obtaining B knowing A=0.125/(R0/t) and temperature.
2.Some theory on the Pa=(4*B)/3*(D0/t) formula,with
Pa=Max Allowable pressure,D0=outside diameter
and t=wall thickness.
Thanks again.

 

[johnnymist2003]

Hi,

have a look at "Theory and Design of Pressure Vessels" by John F Harvey, Chapter 8. It is covered pretty well in there.

John

 

[bvi]

The buckling rules cover elastic buckling and elastic plastic buckling. The chart for B goes up to yield stress levels for the material. The nonlinear portion of the chart gives the tangent modulus for the material, which controls elastic plastic buckling, between the proportional limit of the material, and the 0.2% offset yield strength. The linear portion of the chart is the elastic buckling portion, and the results from using that portion of the chart should be identical to using the equation which uses A and E.

 

[LSThill]

Hi capablanca (Structural)and team members:

Overview of Pressure Vessel Design Instructor’s Guide
... Page 20. 20 Overview of Pressure Vessel Design Instructor’s Personal Notes Instructor’s Outline 1. Spherical storage vessels typically supported on legs. ...

http://www.asme.org/education/prodev/cdseries/pdf/

Overview of Pressure Vessel Design
... Outlet Nozzle Notes: 8 Spherical Pressurized Storage ... Fired process heaters – Pressure containers integral ... Stress calculations – Design – Quality control ...

http://www.asme.org/education/prodev/cdseries/pdf/

Leonard@thill.biz

http://www.thill.biz

 

[LSThill]

Note: regards to the above posting [do a search of google!].

1).Overview of Pressure Vessel Design Instructor’s Guide
2).Overview of Pressure Vessel Design

should take you to the .pdf file

Good reference for the new Pressure Engineer and Designer/Drafter's

Leonard@thill.biz

 

[capablanca]

Johnnymist:
Thanks! I bought an used Harvey book and all is covered as you indicated.Also thanks Leonard and cb4 for their comments,all resulted useful.
Capablanca.