1. (a) The vertical structure ABCD shown in Figure 1(a) is subjected to a system of coplanar forces and a moment. The st

[answerhappygod]

1 A The Vertical Structure Abcd Shown In Figure 1 A Is Subjected To A System Of Coplanar Forces And A Moment The St 1 (248.22 KiB) Viewed 33 times

1. (a) The vertical structure ABCD shown in Figure 1(a) is subjected to a system of coplanar forces and a moment. The structure is simply supported at D with a frictionless pin and is roller-supported at A. i. ii. Sketch the free body diagram (FBD). Take moments about D and hence find the reaction force at support A. 35 KNA 25 m 05 m с 80 KN B 60 100 km 75 KN 2 m 05 m KAN D 45 4 Figure 1(a) (12 marks) (b) An assembly of a steel bar enclosed within an aluminium alloy tube is shown in Figure 1(b). The tube and the bar are of the same initial length. The combination is compressed between two rigid parallel plates by a force of 500 KN. The diameter of the steel bar is 40 mm, and the inside and outside diameters of the alloy tube are 60 mm and 100 mm respectively. The Young's moduli for steel and aluminium alloy respectively are Est = 200 GNm-2, EAI = 70 GNm-2 Find the stresses generated in the steel bar and the aluminium alloy tube. SOON Rigod plate Aluminium tube Steel bar Rigid plate 500KN Figure 1(b)