10 kN 80 kN/m В A D 4 m 1 m'1m

7 5⁰ 20016's E 6 4001 C 12 boolbs H A 10⁰ 300165 14 F D 8' B 3 bol 1000 155 G CALCULATE FORCES CD, HI, EI, IF, CF, CB AC, BD, AB

P.16.15. A thin-walled closed section beam of constant wall thickness t has the cross-section shown in Fig. P.16.15. Assuming that the direct stresses are distributed according to the basic theory of bending, calculate and sketch the shear flow distribution for a vertical shear force S, applied tangentially to the curved part of the beam. Answer: 901 = Sy(1.61 cos 0-0.80)/r Sy 7.3 912= (0.57s² - 1.14rs +0.33²)