While an oil well is being drilled at a depth of 2000 m, it is observed that the top of the 200-mm-diameter steel drill pipe (G= 77.2 GPa)rotates through 2.5 revolutions before the drilling bit starts to operate. Determine the maximum shearing stress caused in the pipe bytorsion.The maximum shearing stress caused in the pipe by torsion isMPа.

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Answered: While an oil well is being drilled at a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A steel shaft with a length of 3.00 m. One meter of the steel is contained in a brass tube and firmly attached. The diameter d1 = 70 mm and the diameter d2 = 90 mm. Brass G = 39GPa and steel G = 77.20 GPa. Determine: The torque that can be applied if the deformation at one end is 10 degrees. Answer: T = 8.64 kN – m The torque that can be applied if the maximum shear stress in brass is 70MPa and in steel is 110MPa. Answer: T = 6.352 kN – m Recommendation: analyze by segments. The first segment is only brass, then the composite part between brass and steel, and the last part only steel. In the composite segment, use only one material. In this same segment, equalize the deformations.
The pressure tank shown has an outside diameter of 100 mm and a wall thickness of 10 mm. Determine the absolute maximum shear stress at point H on the inner surface if the internal gauge pressure is 1.25 MPa and the applied torque is 375N•m. Show the stress state in matrix form and calculate eigenvalues.
The drive shaft AB of an automobile is made of a steel having allowable shear stress of tallow = 8 ksi. If the outer diameter of the shaft is 2.5 in. and the engine delivers 200 hp to the shaft when it is turning at 1140 rev>min, determine the minimum required thickness of the shaft’s wall.
The solid 50-mm-diameter shaft is subjected to the torques applied to the gears. Determine the absolute maximum shear stress in the shaft.
Determine the maximum shearing stress in a bronze helical spring composed of 19 turns of 0.96-in.-diameter wire on a mean radius of 3.53 in. when the spring is supporting a load of 516 Ib. Use the equation for heavy spring and G = 6 x 10° psi. (Answer must be in Ib per square inch) Round your answer to 2 decimal places. Add your answer
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3. Gear B supplies 20 KW of power, while gears A, C and D withdraw 6 kW, 4 kW and 10 kW, respectively. If the shaft is made of steel with the allowable shear stress of 80 MPa, and the relative angle of twist between any two gears cannot exceed 0.065 rad, determine the required minimum diameter d of the shaft to the nearest millimeter. The shaft is rotating at 800 rpm. 600 mm 600 mm 600 mm
The steel shaft is formed by attaching a hollow shaft to a solid shaft. Determine the shear stress (in Pa) in the hollow shaft using the maximum torque T that can be applied to the ends of the shaft without exceeding a shear stress of 70092104 Pa and angle of twist of 2.25ᴼ for the whole shaft. Use G = 83000000000 Pafor the shaft, x = 2.43 m, and y = 1.89 m. Round off the final answer to two decimal places.
For the shaft shown below, determine the normal and shear stresses acting on the element located at point A, including stress concentrations. Then draw the stress element at A with the applied stresses and determine the three principal stress (0₁, 2 and, σ3) using Mohr's circle. r = 0.0042 m, d = 0.03 m, D = 0.033 m, T = 250 Nm P = 1500 N, M = 300 Nm, A M M DEHRƏC T d T P P r
While an oil well is being drilled at a depth of 2100 m, it is observed that the top of the 200-mm-diameter steel drill pipe (G = 77.2 GPa) rotates through 2.5 revolutions before the drilling bit starts to operate. Determine the maximum shearing stress caused in the pipe by torsion.
Part A The turbine develops 230 kW of power, which is transmitted to the gears such that both B and C receive an equal amount. The rotation of the 100-mm-diameter A992 steel shaft is w = 720 rev/min. (Figure 1) The journal bearing at D allows the shaft to turn freely about Determine the absolute maximum shear stress in the shaft. Express your answer to three significant figures and include appropriate units. its axis. µA ? Value Units max Submit Request Answer Figure 1 of 1 Part B Determine the rotation of end D of the shaft relative to A. Use Gst = 75.0 GPa. Express your answer to three significant figures and include appropriate units. 1.5 m µA ? 2 m Value Units 1 m Submit Denuest Anewer
The 304 stainless steel tube has a thickness of 10 mm. If the allowable shear stress is tallow = 80 MPa, determine the maximum torque T that it can transmit. Also, what is the angle of twist of one end of the tube with respect to the other if the tube is 4 m long? The mean dimensions are shown.

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