[TowerTalk] re: mast stiffness

[Rick Karlquist]

Stiffness is proportional to:

    O.D.^4 - I.D.^4

ie, the difference of the fourth powers of the diameters

Strength is proportional to:

    O.D.^3 - I.D.^3

Hope that helps.

Rick Karlquist N6RK


>Date: Wed, 20 Dec 2000 16:17:56 -0700
>From: "Dave D'Epagnier" <DAVED@ctilidar.com>
>Subject: [TowerTalk] Mast Analysis>>

>A while back someone posted a web site where there is an article describing
>how to calculate mast yield. I've lost my bookmark for this site. I'm
trying
>to figure out which would be stiffer: an aluminum mast with 2" diameter and
>0.375" wall or a 2.5"diameter 0.25" wall mast. Can anyone point me in the
>right direction?
>thanks,
>Dave
>K0QE


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