Flange y (h/4 x t) y h 2 h 2 Z- |C IC e e h 2 h 2 (a) (b)

The cross section of a slit rectangular tube of
constant thickness is shown in the figures.
(a) Derive the following formula for the distance e
from the centerline of the wall of the tube in the
figure part a to the shear center S:

 e = [b(2h+3b)/[2(h+3b)]

(b) Find an expression for e if flanges with the same
thickness as that of the tube are added as shown
in figure part b.