A 40-mm diameter bar ABC is composed of an aluminum part AB and a steel part BC

Question

A 40-mm diameter bar ABC is composed of an aluminum part AB and a steel part BC (Fig. P2.27). After axial force Pis applied, a strain gage attached to the steel measures normal strain at the longitudinal direction as ?s = 600 ?. Determine (a) the magnitude of the applied force P; (b) the total elongation of the bar if each material behaves elastically. Take Ea = 70 GPa and Es = 210 GPa.

A 40-mm diameter bar ABC is composed of an aluminum part AB and a steel part BC (Fig. P2.27). After axial force Pis applied, a strain gage attached to the steel measures normal strain at the longitudinal direction as ?s = 600 ?. Determine (a) the magnitude of the applied force P; (b) the total elongation of the bar if each material behaves elastically. Take Ea = 70 GPa and Es = 210 GPa.

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