Question

The 500-1b concentrated load is perpendicular to the x-z plane and parallel with the y-axis. The Point A is located at the base of the support structure on the outside face of the hollow circular tube shown in Section X-X. 5 ft 500 lb 6.0 in 5.5 in Q Section X-X 25 ft у Х N AY a. Compute all stress resultants at the base of hollow circular tube and compute the stresses associated with each stress resultant at Point A. (15 points)

Answer 1

-ve-y-direction. direction. Shear force at base, Vy =+500 lb in Bending moment at base, M = 12500 lb·ft in hogging Torque at base, T = 2500 lb.ft in +ve re- direction. * Stress at À Cat base) due to these force for stress femction)- i) shear stress at À ITA = 0 (as A' is located at due to 'Vý the base of support on Outside face of hollow Circular tube). ii) I I = TL 64 MY stress at A, TA Bending І. due to 'M'. - (12500x12)lbein x 3in 18.706 int (6*-5.5) I - 18.706 int y = 3 in A o A = 24056.45 15/in 2 (Tensile) in the re-direction. 290) で T Shear stress at t, due to J- 5 167-5.5)in* x J Torque'T J= 37,413 in + TA (2500x12 ) lb.in x 3 in. 37.4 13 int r=3 in A Tá = 2405.58 lb/inz (in -ve Z-direction)