Page 370 - Aircraft Stuctures for Engineering Student

Problems 351

Fig. P.9.12

P.9.13 A thin-walled beam has the cross-section shown in Fig. P.9.13. The thick-
ness of each flange varies linearly from tl at the tip to t2 at the junction with the web.
The web itself has a constant thickness t3. Calculate the distance Es from the web to
the shear centre S.
A~S. d2(2tl + l2)/[3d(tl + t.) + ht3]

Fig. P.9.13
P.9.14 Figure P.9.14 shows the singly symmetrical cross-section of a thin-walled
open section beam of constant wall thickness t, which has a narrow longitudinal slit at
the corner 15.

4

Fig. P.9.14