The pin-connected structure shown consists of a rigid bar ABCD and two axial members. Bar (1) is steel [E = 200 GPa; a = 11.7x 10-6/°C], with a cross-sectional area of A, = 430 mm?. Bar (2) is an aluminum alloy [E = 70 GPa; a = 22.5 x 10-6/°C], with across-sectional area of A2 = 380 mm2. The bars are unstressed when the structure is assembled. Assume a=380 mm, b=650 mm,c=690 mm, P=35 kN, and L=930 mm. After a concentrated load of P = 35 kN is applied and the temperature is increased by15°C, determine(a) the normal stresses in bars (1) and (2).(b) the deflection of point D on the rigid bar.L(1)BOn a piece of paper, sketch a FBD of rigid bar ABCD. Write an equilibrium equation which relates F1. the force in Bar (1), and F2.the force in Bar (2). Select the correct equation below. By convention, a tension force is positive, and a compression force isnegative. On a piece of paper, sketch a deformation diagram. Based on this diagram, write a geometry-of-deformation equation in termsof deformations ôị and 82, which are the deformations of Bars (1) and (2), respectively. From the geometry-of-deformationequation, enter the ratio, ô1 /82.

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The pin-connected structure shown consists of a rigid bar ABCD and two axial members. Bar (1) is steel [E = 200 GPa; a = 11. x 10-6/°C), with a cross-sectional area of A, = 430 mm². Bar (2) is an aluminum alloy [E - 70 GPa; a = 22.5 x 10-6/°C], with a cross-sectional area of Az = 380 mm?. The bars are unstressed when the structure is assembled. Assume a-380 mm, b=650 mr c-690 mm, P=35 kN, and L-930 mm. After a concentrated load of P = 35 kN is applied and the temperature is increased by 15°C, determine (a) the normal stresses in bars (1) and (2). (b) the deflection of point D on the rigid bar. (1)

The pin-connected structure shown consists of a rigid bar ABCD and two axial members. Bar (1) is steel [E = 200 GPa; a = 11. x 10-6/°C), with a cross-sectional area of A, = 430 mm². Bar (2) is an aluminum alloy [E - 70 GPa; a = 22.5 x 10-6/°C], with a cross-sectional area of Az = 380 mm?. The bars are unstressed when the structure is assembled. Assume a-380 mm, b=650 mr c-690 mm, P=35 kN, and L-930 mm. After a concentrated load of P = 35 kN is applied and the temperature is increased by 15°C, determine (a) the normal stresses in bars (1) and (2). (b) the deflection of point D on the rigid bar. (1)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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