How to Calculate Stresses in Rectilinear Pressurized Channel

[Guest102023]

Materials, dimensions and design conditions are shown on the attached drawing. I have taken a two-dimensional slice of the pressurized channel to simplify the analysis. It is a Section VIII-D1 pressure vessel.
Short of having professional software, how do I go about obtaining conservative values of the stresses? Seems to me I will need to consider vertical and horizontal loads on the four sides, as well as bending loads at the welds. Can I treat the latter portion as a beam under uniform loading?

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"If you don't have time to do the job right the first time, when are you going to find time to repair it?"

 

[prex]

You need to go to App.13, but if, as appears from your questions, you don't know where to start from, you'll need to ask for professional advice.

prex
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[fegenbush]

You can treat the bar as a beam under constant bending AND axial load.

 

[pdiculous963]

Also, you better

 

[pdiculous963]

check out figure UW-13.2 of Sec. VIII Div. 1. Looks like your corner joints are of the nonpermissible type.

 

[Guest102023]

Somebody permitted it, because it is a registered PV.
My task is only to do a FFS assessment.

"If you don't have time to do the job right the first time, when are you going to find time to repair it?"

 

[pdiculous963]

Just because it is stamped, does not mean it was designed correctly in the first place. I'd be sure to mention that this corner joint is a non-code detail. Should keep you out of trouble if something goes wrong.