The hollow drill pipe for an oil well is 160mm in outside di

The hollow drill pipe for an oil well is 160mm in outside diameter and 16mm in wall thickness. Just above the bit, the compressive force in the pipe (caused by the weight of the pipe) is 300 kN and the torque due to drilling is 20 kN m. Determine the maximum tensile, compressive and shear stresses in the drill pipe.

nd e hollow drill pipe for an oil well is 160 mm in outside diameter 16 mm in wall thickness. Just above the bit, the compressive force in the pipe (caused by the weight of the pipe is 300 the due to drilling is 20 kN-m. Determine the maximum tensile compressive, and shear stresses in the drill pipe.

Solution

The answer of following question is as follows .

The value of maximum tensile stress is 67 mpa

The value of maximum compressive stress is 54 mpa.

While the value of maximum shear stress is 34kpa