Question

Tutorial 1. A tensile member in a machine structure is subjected to a steady load of 4.50 kN. It has a length of 750 mm and is made from a steel tube having an outside diameter of 18 mm and an inside diameter of 12 mm. Compute the tensile stress in the tube and the axial deformation. 2. Compute the stress in a round bar having a diameter of 10.0 mm and subjected to a direct tensile force of 3500 N. 3. Compute the stress in a rectangular bar having cross sectional dimensions of 10.0 mm by 30.0 mm when a direct tensile force of 20 kN is applied. Bonus Question A brass rod is 500 mm long and 20 mm diameter. If it is milled down to 15 mm diameter for a length of 100 mm at each end, calculate the total elongation when subjected to an axial pull of 7 kN. Calculate also the factor of safety at this load. Given E_brass = 90 GN/m^2, ?_UTS = 190 MN/m^2. (Answer: 0.162 mm, 4.8)

          Tutorial
1. A tensile member in a machine structure is subjected to a steady load of 4.50 kN. It has a length of 750 mm and is made from a steel tube having an outside diameter of 18 mm and an inside diameter of 12 mm. Compute the tensile stress in the tube and the axial deformation.
2. Compute the stress in a round bar having a diameter of 10.0 mm and subjected to a direct tensile force of 3500 N.
3. Compute the stress in a rectangular bar having cross sectional dimensions of 10.0 mm by 30.0 mm when a direct tensile force of 20 kN is applied.

Bonus Question
A brass rod is 500 mm long and 20 mm diameter. If it is milled down to 15 mm diameter for a length of 100 mm at each end, calculate the total elongation when subjected to an axial pull of 7 kN. Calculate also the factor of safety at this load. Given E_brass = 90 GN/m^2, ?_UTS = 190 MN/m^2.
(Answer: 0.162 mm, 4.8)

Tutorial
1. A tensile member in a machine structure is subjected to a steady load of 4.50 kN. It has a length of 750 mm and is made from a steel tube having an outside diameter of 18 mm and an inside diameter of 12 mm. Compute the tensile stress in the tube and the axial deformation.
2. Compute the stress in a round bar having a diameter of 10.0 mm and subjected to a direct tensile force of 3500 N.
3. Compute the stress in a rectangular bar having cross sectional dimensions of 10.0 mm by 30.0 mm when a direct tensile force of 20 kN is applied.

Bonus Question
A brass rod is 500 mm long and 20 mm diameter. If it is milled down to 15 mm diameter for a length of 100 mm at each end, calculate the total elongation when subjected to an axial pull of 7 kN. Calculate also the factor of safety at this load. Given Ebrass = 90 GN/m^2, ?UTS = 190 MN/m^2.
(Answer: 0.162 mm, 4.8)

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