In a message dated 10/14/98 11:47:56 AM Eastern Daylight Time, CQ K8DO writes:
<< In a message dated 10/13/98 12:17:44 PM Eastern Daylight Time,
W4EF@pacbell.net writes:
<< The idea does beg an interesting question though, how does one
calculate the bending strength of a mast made of two different materials?
For
example, what if I have an aluminum mast with a steel insert inside of it?
>>
You do it in two steps... You calculate the moment of inertia of the tube and
using the appropriate materials table, do the calculations... Then you do the
same for the solid bar of material filling the center... Adding those two
figures gives your total.... (OK you aeronautical engineers and PE's, don't
jump on me I'm discussing basic approachs here, not the really fun details)
Cheers ... Denny >>
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