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A composite bar of 20 mm X 20 mm cross-section is made up of three flat bars as shown in Fig. 1.74. All the three bars are rigidly connected at the ends when the temperature is 20°C. Determine

A composite bar of 20 mm X 20 mm cross-section is made up of three flat bars as shown in Fig. 1.74. All the three bars are rigidly connected at the ends when the temperature is 20°C. Determine

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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solve i and ii please.

1.16 A composite bar of 20 mm X 20 mm cross-section is made up of three flat bars as shown in Fig. 1.74. All the three bars are rigidly connected at the ends when the temperature is 20°C. Determine (i) the stresses developed in each bar when the temperature of the composite bar is raised to 60°C STEEL 8mm 20 mm ALUMINIUM 4 mm STEEL 8 mm -20 mm- Fig. 1.74 (ii) the final stresses in each bar when a load of 17.6 kN is applied to the composite bar E = 80 GPa E = 200 GPa a = 11 x 10-/°C a = 22 x 10-6/°C
Transcribed Image Text:1.16 A composite bar of 20 mm X 20 mm cross-section is made up of three flat bars as shown in Fig. 1.74. All the three bars are rigidly connected at the ends when the temperature is 20°C. Determine (i) the stresses developed in each bar when the temperature of the composite bar is raised to 60°C STEEL 8mm 20 mm ALUMINIUM 4 mm STEEL 8 mm -20 mm- Fig. 1.74 (ii) the final stresses in each bar when a load of 17.6 kN is applied to the composite bar E = 80 GPa E = 200 GPa a = 11 x 10-/°C a = 22 x 10-6/°C
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