Thanks for that. My mind is at rest. The hole must get bigger if there is no induced stress, which we have already agreed on.
Cheers
Steve McKenzie
> >However, if the effect of significant wall thickness is added then I am
> >unsure, and would think some secondary stress could possibly be
generated.
> >However I have difficulty in visualising the effect. A finite element
study
> >would put my mind at rest.
> God only knows why I'm doing this on a gorgeous Saturday afternoon, but I
> made a quick FEA run on an L-shaped pipe run with a long radius ell and
> there was no rotation. Uniform temperature throughout so the thermal
> strain was uniform. Everything changed scale uniformly since the thermal
> strain was equal. The pipes didn't go oval either. Anyone want pictures
> or details, let me know.
>
> Answering my own post, I see I wasn't the only one who fell for it.
>
> In a similar vein, Suppose you have a hole in the middle of a square
> plate and the plate is heated to a uniform temperature. Does the hole get
> larger or smaller?
>
> Christopher Wright P.E. |"They couldn't hit an elephant from
> chrisw@skypoint.com | this distance" (last words of Gen.
> ___________________________| John Sedgwick, Spotsylvania 1864)
> http://www.skypoint.com/~chrisw
>
>
>
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>
Received on Sat Apr 20 19:33:00 2002
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