Design of repads for rectangular attachments
Design of repads for rectangular attachments
(OP)
The jacketed vessel I'm analyzing was built in 1959. None of the original design calcs, datasheets, or drawings match the as-built vessel. I'm to "update" the calculations on the jacket closure bar.
Turns out the bar itself is okay, but it imposes a large moment on the shell, causing failure. (This was assuming no repad--just closure bar-to-shell.) Later, I found out that there is actually a repad between the closure bar and shell...and gussets on top of the closure bar!
My question is, how to I take credit for the repad and gussets? Surely they add something to the strength of this attachment, though I don't personally know how to calculate this. I don't think a WRC 107 analysis is appropriate for this.
Any suggestions?
Thanks!
Kelly
Turns out the bar itself is okay, but it imposes a large moment on the shell, causing failure. (This was assuming no repad--just closure bar-to-shell.) Later, I found out that there is actually a repad between the closure bar and shell...and gussets on top of the closure bar!
My question is, how to I take credit for the repad and gussets? Surely they add something to the strength of this attachment, though I don't personally know how to calculate this. I don't think a WRC 107 analysis is appropriate for this.
Any suggestions?
Thanks!
Kelly




