고체역학 (Beer) — Shearing Stresses in Beams: Problem 6.26

6.25 through 6.28 A beam having the cross section shown is subjected to a vertical shear V. Determine (a) the horizontal line along which the shearing stress is maximum, (b) the constant k in the following expression for the maximum shearing stress \(\tau_{max} = k \frac{V}{A}\) where A is the cross-sectional area of the beam. (Figure P6.26 shows a thin-walled circular ring cross-section with mean radius \(r_m\) and wall thickness \(t_m\)).