Determine the horizontal deflection at joint G of the truss shown in Fig. 7.6(a) by the virtual work method. Solution Re

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Determine The Horizontal Deflection At Joint G Of The Truss Shown In Fig 7 6 A By The Virtual Work Method Solution Re 1 (64.77 KiB) Viewed 29 times

Determine the horizontal deflection at joint G of the truss shown in Fig. 7.6(a) by the virtual work method. Solution Real System. The real system consists of the loading given in the problem, as shown in Fig. 7.6(b). The member axial forces due to the real loads (F) obtained by using the method of joints are also shown in Fig. 7.6(b). Virtual System. The virtual system consists of a unit (1-kN) load applied in the horizontal direction at joint G, as shown in Fig. 7.6(e). The member axial forces due to the 1 kN virtual load (F.) are also depicted in Fig. 7.6(c). E (20 cm) 100 KN 100 KN 100 E 0 I KN 3 m (30 cm) 0 (20 cm) 125 25 1.25 0.75 200 (20 cm) KN 0 >> (30 cm) (30 cm) D 200 KN D (20 cm) 373 1.25 (30 cm) 3 m 300 75 1.3 0.75 (30 cm) 300 41 300 cal - Po 4 m E = 200 GP 300 300 13 1.3 FIG. 75 (a) (b) Real System - F Forces (c) Virtual System - F Forces