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RE:Shear Flow AISC 13th Ed.
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 Subject: RE:Shear Flow AISC 13th Ed.
 From: "Thor Matteson" <thor(nospamat)yosemite.net>
 Date: Wed, 28 Jan 2009 23:22:21 0800
Shear flow is defined as VQ/I, whether steel or any material. The
definition for Q is the area of the section you are considering connecting
(called "A") times the distance from the NA of the *entire* section to the
centroid of the section you are connecting (this distance is called
"ybar"). ybar is a constant for a given configuration. Just
plain "y" is the variable used to denote distance from the NA of the overall
section. The maximum value that y can have is "c", and this is where we
get S=I/c
So shear flow is NOT equal to VA/S, nor would it equal VA/Z.
(This is much easier to explain with diagramslook in your mechanics of
materials book, probably around chapter 7... )
Apologies if this has already been answeredI'm in digest mode, so a day
behind everyone, PLUS the digests do funny things with equal signs and such and
I really can't make sense out of anyone else's equations.
Thor Matteson, SE

 FollowUps:
 Thanks on Shear Flow Ps: digest mode is crap
 From: Paul Guthrie
 Thanks on Shear Flow Ps: digest mode is crap
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