Hexagonal Hammer Shanks

[Richard Brekne]

By all means get obscene :)... you dont have to get really obscene mind
you... just generally obscene will do !  A basic run through of the
connection would be dandy.

RicB

Stephen Birkett wrote:
> 
> Ric rit:
> >Jim...and others may correct me where I am wrong here.... but I THINK
> >that Ron was getting at the more general question of what shape of a
> >shank yields the most stiffness for same << diameters >>
> >I dont really see the point in using inertia in this regard myself... I
> >fail to see the connection between a things moment of inertia, and its
> >stiffness... Besides there are formulas to do show stiffness for
> >different shapes rather directly unless I'm mistaken.
> 
> Yes. Ron's measure of stiffness of an elastic beam is the flexural
> rigidity EI where E is Young's modulus and I is the moment of inertia
> of the beam about the neutral axis (through the centroid of the cross
> section). That's where the moment of  inertia comes into it - and
> those values are tabulated for beams of various cross sections, e.g.
> standard steel structural beam of various cross-sectional shapes. A
> loaded elastic beam will take on a curvature according to its
> flexural rigidity.
> 
> Hard to describe this stuff without sounding obscene methinks....
> 
> Stephen
> 
> --
> Dr Stephen Birkett
> Associate Professor
> Department of Systems Design Engineering
> University of Waterloo
> Waterloo, Ontario
> Canada N2L 3G1
> 
> Davis Building Room 2617
> tel: 519-888-4567 Ext. 3792
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> mailto: sbirkett[at]real.uwaterloo.ca
> http://real.uwaterloo.ca/~sbirkett
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-- 
Richard Brekne
RPT, N.P.T.F.
UiB, Bergen, Norway
mailto:rbrekne@broadpark.no
http://home.broadpark.no/~rbrekne/ricmain.html
http://www.hf.uib.no/grieg/personer/cv_RB.html