6 A composite bar of 20 mm x 20 mm cross section is made up

Last updated: 6/12/2023

6 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 20 mm STEEL ALUMINIUM STEEL 20 mm 8mm 4 mm 8 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 a 11 x 10 6 C E 200 GPa a 22 x 10 6 C