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- What is the maximum power that can be delivered by a hollow propeller shaft (outside diameter 50 mm, inside diameter 40 mm, and shear modulus of elasticity 80 GPa) turning at 600 rpm if the allowable shear stress is 100 MPa and the allowable rate of twist is 3.0°/m?A full quarter-circular fillet is used at the shoulder of a stepped shaft having diameter D2= 1.0 in. (see figure), A torque T = 500 lb-in. acts on the shaft. Determine the shear stress at the stress concentration for values as follows: D1= 0.7,0.8, and 0.9 in. Plot a graph showing versus D?The stepped shaft shown in the figure is required to transmit 600 kW of power at 400 rpm. The shaft has a full quarter-circular fillet, and the smaller diameter D1= 100 mm. If the allowable shear stress at the stress concentration is 100 MPa, at what diameter will this stress be reached? Is this diameter an upper or a lower limit on the value of D2?
- A long, thin-walled tapered tube AB with a circular cross section (see figure) is subjected to a torque T. The tube has length L and constant wall thickness t. The diameter to the median lines of the cross sections at the ends A and B are dAand dB, respectively. Derive the following formula for the angle of twist of the tube: Hint: If the angle of taper is small, you may obtain approximate results by applying the formulas for a thin-walled prismatic tube to a differential element of the tapered tube and then integrating along the axis of the tube.A stepped shaft (see figure) has diameter D2= 1.5 in, and a full quarter-circular fillet. The allowable shear stress is 15,000 psi and the load T = 4800 1b-in. What is the smallest permissible diameter D1?A full circular cross-section shaft will be designed to provide power transmission at 220 (revolution/minute) revolution of a 12300 kW engine. Since the shaft length is 3 m, the material shear modulus is 80 GPa, and the shear yield stress is 190 MPaa) How many kN.m torque should the shaft carry?b) Write down the minimum safe shaft radius in metersc) How many rad is the shaft at the specified minimum radius. found?
- The torque transmitted by a solid shaft of diameter 10 mm and shear stress 75 MPa Select one: a. 14.72x109 N-m b. 14.72 kN-m c. 147.2 N-mm d. 14.72 N-mA shaft is made of a steel alloy having an allowable shear stress of Tallow = 12ksi. IF the diameter of the shaft is 1.5 inches diameter the maximum torque T if a 1in, diameter hole is bored through the shaft? Sketch the shear stress distribution along a trial line in each case.Determine the minimum diameter that can be used for a solid circular steel shaft which is limited to an allowable shear stress of 70 MPa and a maximum angle of twist of 1.5o (degrees) per meter length. Applied maximum torque is 25 KN-m and the overall shaft length is 1.25 meters. Shear modulus = G= 80 GPa Note: When using torsion stress formulas, you must convert the angle of twist from degrees to radians.
- When subject to an applied torque,a circular shaft of length 600mm twists through an angle of 2°,if the shear modulus for the shaft material is 80KN/m^2, calculate the shear stress; A)At the center of the shaft B)At a radius of 20mm C)if the maximum shear in the shaft is 120MN/m^2, calculate the outside diameterE 4G 1:09 1 0 K/s ۲ نیسان، ۲۰۲۱ :) > ۱۱:۲۶ ص اسئلة مقاومة المواد 0-1 The gears attached to the fixed-end steel shaft are subjected to the torques shown in fig. The shaft has diameter of (14 mm ).Determine the max shear stress and the angle of twist A relative c . use G=80 Gpa A 280 N.m 150 N.m B c 40 N.m ) ) 43 0.4m 0.3m Q-2 Draw the shear and moment diagram for the beam loaded shown in fig 15 KN 80 KN .m 5 KN/m B 5 m 5m ūA solid shaft in a rolling mill transmits 20 kW at 2 revolutions per second. The length of the shaft is 3 m and modulus of rigidity is 83,000 MPa. Which of the following gives the torque carried by the shaft?a. 1.59 kN-m c. 2.69 kN-mb. 3.45 kN-m d. 4.81 kN-m Which of the following gives the minimum diameter so that the allowable torsional shearing of 40 MPa will not beexceeded?a. 88 mm c. 59 mmb. 45 mm d. 76 mm Which of the following gives the minimum diameter so that the allowable angle of twist of 6O will not be exceeded?a. 29 mm c. 35 mmb. 49 mm d. 55 mm