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# A steel tie bar of length 1 m and diameter of 30 mm is tensioned to carry load of 180 kN at a temperature of 20 °C What is the stress in the bar and its change in length when tensioned What will be

A steel tie bar of length 1 m and diameter of 30 mm is tensioned to carry load of 180 kN at a temperature of 20 °C. What is the stress in the bar and its change in length when tensioned? What will be the stress in the bar if the temperature rises to 80°C and any change in length is prevented? Take E  200 GN m 2 and   12  10 6 °C 1 . 9. A metal component of initial length 600 mm undergoes an increase in length of 0.05 mm when loaded at a temperature of 18 °C. Determine, (a) the tensile stress in the component when fi rst loaded, (b) the temperature at which the stress will be zero if the component is rigidly held at its extended length. Take E  120 GPa and   15  10 6 °C 1 for the component material. 10

Jun 24 2020 View more View Less