EXAMPLE 1.39. A composite bar made up of aluminium and steel held between two supports as shown in Fig. 1.55. The bars are stress iree at the tcmperature of 8°C. What will be the tresses in the two bars when the errc if, (a) the supports are unyielding, and (b) the иррorts сomе пеarer each other by 0.1 mm. li can be assumed that the change of temperature is uniform all along the length of the bar, E for steel= 2.1x 10 kg/cm, E for alu- minium-7.4x 10% kg/cm², x 104 per °C; aAL for aluminium=23.4 x 10³ per °C. Steel bar dia. 50 mm Aluminium bar dia. 25 mm temperatnre is to 60 cm *-30 cm- %3D Fig. 1.55 coefficient of expansion for steel a, 11.7 (4.M.I.E.) %3D %3D

EXAMPLE 1.39. A composite bar made up of aluminium and steel held between two supports as shown in Fig. 1.55. The bars are stress iree at the tcmperature of 8°C. What will be the tresses in the two bars when the errc if, (a) the supports are unyielding, and (b) the иррorts сomе пеarer each other by 0.1 mm. li can be assumed that the change of temperature is uniform all along the length of the bar, E for steel= 2.1x 10 kg/cm, E for alu- minium-7.4x 10% kg/cm², x 104 per °C; aAL for aluminium=23.4 x 10³ per °C. Steel bar dia. 50 mm Aluminium bar dia. 25 mm temperatnre is to 60 cm *-30 cm- %3D Fig. 1.55 coefficient of expansion for steel a, 11.7 (4.M.I.E.) %3D %3D

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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