Re: Plastic Material Calculation of stresses at

From: <Christopher>
Date: Thu Jul 31 2003 - 10:54:00 EDT

> CH12 in R & Y at 12.7 gives some insight but continually cautions you on how
large
>errors can occur.

My Roark is the older version, so I don't know which approach they suggest. The 'large errors' note tells me it's the WRC 107 approach. If you're talking about a small diameter, relatively thick pipe, you can use the appropriate ring formula. There won't be much in the way of errors because the pipe won't become elliptical. If it's a large diamter thin wall pipe (say D/t>30) you'll probably have to stiffen it. The nozzle calculation probably won't do you much good, since you don't have a nozzle or a branch connection.

Christopher Wright P.E. |"They couldn't hit an elephant at <a href="/group/PipingDesign/post?postID=IPc8DS8VUVpWea1iL2MdqF6Hk9UC5nnk85EAetSebSGmBOsdQQPA481h7__xdrPUmIm80EO8W2Fk">chrisw@skypoint.com</a> | this distance" (last words of Gen.

___________________________| John Sedgwick, Spotsylvania 1864)

<a href="http://www.skypoint.com/~chrisw">http://www.skypoint.com/~chrisw</a> Received on Thu Jul 31 10:54:00 2003