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An aluminum bar has length L = 5 ft and diameter d = 1.25 in. %D The stress-strain curve for the aluminum is shown in Fig. 1-13 of Section 1.3. The initial straight-line part of the curve has a slope (modulus of elasticity) of 10 X 106 psi. The bar is loaded by tensile forces P = 39 k and then unloaded. What is the permanent s t of the bar? deformation

An aluminum bar has length L = 5 ft and diameter d = 1.25 in. %D The stress-strain curve for the aluminum is shown in Fig. 1-13 of Section 1.3. The initial straight-line part of the curve has a slope (modulus of elasticity) of 10 X 106 psi. The bar is loaded by tensile forces P = 39 k and then unloaded. What is the permanent s t of the bar? deformation

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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An aluminum bar has length L = 5 ft and diameter d = 1.25 in. %D %3D The stress-strain curve for the aluminum is shown in Fig. 1-13 of Section 1.3. The initial straight-line part of the curve has a slope (modulus of elasticity) of 10 X 106 psi. The bar is loaded by tensile forces P = 39 k and then unloaded. What is the permanent s t of the bar? deformation Loading Elastic recovery Residual strain (b) FIG. 1-18 Stress-strain diagrams illustrating (a) elastic behavior, and (b) partially elastic behavior FIG. 1-19 Reloading of a material and raising of the elastic and proportional limits o (ksi) 40 30 20 10 0 0.05 0.10 0.15 0.20 0.25 FIG. 1-13 Typical stress-strain diagram for an aluminum alloy Bnpeorun Loading Bospeo Unloading
Transcribed Image Text:An aluminum bar has length L = 5 ft and diameter d = 1.25 in. %D %3D The stress-strain curve for the aluminum is shown in Fig. 1-13 of Section 1.3. The initial straight-line part of the curve has a slope (modulus of elasticity) of 10 X 106 psi. The bar is loaded by tensile forces P = 39 k and then unloaded. What is the permanent s t of the bar? deformation Loading Elastic recovery Residual strain (b) FIG. 1-18 Stress-strain diagrams illustrating (a) elastic behavior, and (b) partially elastic behavior FIG. 1-19 Reloading of a material and raising of the elastic and proportional limits o (ksi) 40 30 20 10 0 0.05 0.10 0.15 0.20 0.25 FIG. 1-13 Typical stress-strain diagram for an aluminum alloy Bnpeorun Loading Bospeo Unloading
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