The pin-connected structure consists of a rigid bar ABC, a steel bar (1), and a steel rod (2). The cross-sectional area of bar (1) is 1 in.² and the diameter of rod (2) is 0.63 in. Assume E = 30300 ksi and a = 7x 10-6/°F for both axial members. The bars are unstressed when the structure is assembled at 95°F. After application of a concentrated force of P = 39 kips, the temperature is decreased to 33°F Assume L₁=48 in., L₂=65 in., a-10 in., b=26 in., and c=15 in. Determine: (a) the normal stresses 6₁, 6₂ in bar (1) and rod (2) (tensile is positive, compressive is negative). (b) the normal strains €₁, 2 in bar (1) and rod (2) (positive if stretched, negative if shortened). (c) the vertical deflection vc of the rigid bar at C (positive if downward, negative if upward). (1) 4₁ B b с L₂

The pin-connected structure consists of a rigid bar ABC, a steel bar (1), and a steel rod (2). The cross-sectional area of bar (1) is 1 in.² and the diameter of rod (2) is 0.63 in. Assume E = 30300 ksi and a = 7x 10-6/°F for both axial members. The bars are unstressed when the structure is assembled at 95°F. After application of a concentrated force of P = 39 kips, the temperature is decreased to 33°F Assume L₁=48 in., L₂=65 in., a-10 in., b=26 in., and c=15 in. Determine: (a) the normal stresses 6₁, 6₂ in bar (1) and rod (2) (tensile is positive, compressive is negative). (b) the normal strains €₁, 2 in bar (1) and rod (2) (positive if stretched, negative if shortened). (c) the vertical deflection vc of the rigid bar at C (positive if downward, negative if upward). (1) 4₁ B b с L₂

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter2: Axially Loaded Members

Section: Chapter Questions

Problem 2.5.1P: The rails of a railroad track are welded together at their ends (to form continuous rails and thus...

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