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Thanks on Shear Flow Ps: digest mode is crap
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 Subject: Thanks on Shear Flow Ps: digest mode is crap
 From: "Paul Guthrie" <PGuthrie(nospamat)simivalley.org>
 Date: Thu, 29 Jan 2009 07:17:05 0800
>>> "Thor Matteson" <thor(nospamat)yosemite.net> 01/28/2009 11:22 PM >>> 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

 References:
 RE:Shear Flow AISC 13th Ed.
 From: Thor Matteson
 RE:Shear Flow AISC 13th Ed.
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