On Tue, 21 Dec 2004 06:41:31 GMT "NSM" wrote:

| This is only true for bending and compression where buckling is a
| concern. For tension, however, the profile is irrelevant and the
| stress is simply calculated as corss-sectional area / tension.
| Ever see a power line in compression?

But at some point as the tension increases vs. the wall thickness the tube
will neck in on itself.

But wouldn't a solid rod with the same cross sectional area would do
the same thing at the same time? After all, nothing will happen until
the tension/unit area reaches the plastic deformation range.

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Jim Adney
Madison, WI 53711 USA
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