Figure 1 is presented the solid shaft AB rotates at 650 rpm and transmits 30 kW from the motor machine tools connected to gears F and G. Assuming that, 10 kW is taken off at gear F and 20 k taken off at gear G. knowing that allowable torsional shear stress is equal to (65 plus last digit o student ID) MPa. Design the smallest permissible diameter of shaft AB. Figure 1 150 mm F 60 mm M A 225 mm D 225 mm 100 mm 150 mm 60 mm B

Figure 1 is presented the solid shaft AB rotates at 650 rpm and transmits 30 kW from the motor machine tools connected to gears F and G. Assuming that, 10 kW is taken off at gear F and 20 k taken off at gear G. knowing that allowable torsional shear stress is equal to (65 plus last digit o student ID) MPa. Design the smallest permissible diameter of shaft AB. Figure 1 150 mm F 60 mm M A 225 mm D 225 mm 100 mm 150 mm 60 mm B

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter3: Torsion

Section: Chapter Questions

Problem 3.12.4P: The stepped shaft shown in the figure is required to transmit 600 kW of power at 400 rpm. The shaft...

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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 propeller shaft for a small yacht is made of a solid steel bar 104 mm in diameter. The allowable stress in shear is 48 MPa, and the allowable rate of twist is 2.0° in 3.5 meters. (a) Assuming that the shear modulus of elasticity is G = 80 GPa, determine the maximum torque that can be applied to the shaft. (b) Repeat part (a) if the shaft is now hollow with an inner diameter of 5d18. Compare values to corresponding values from part (a).
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?
1. A steel shaft is to be manufactured either as a solid circular or as circular tube. The shaft is required to transmit a torque of 1200 Nm without exceeding an allowable shear stress of 40 MPa, nor an allowable rate of twist of 0.75º/m. For G = 78GPa, determine: a. The required diameter do of the solid shaft.b. The required outer diameter d2 of the hollow shaft if the thickness t of the shaft is specified as one-tenth of the outer diameter.c. The ratio of diameters (that is, the ratio d2/do and the ratio of the weights of the hollow and solid shafts.
A steel shaft is to be manufactured either as a solid circular or as circular tube. The shaft is required to transmit a torque of 1200 Nm without exceeding an allowable shear stress of 40 MPa, nor an allowable rate of twist of 0.75º/m. For G = 78GPa, determine: The required diameter do of the solid shaft. The required outer diameter d2 of the hollow shaft if the thickness t of the shaft is specified as one-tenth of the outer diameter. The ratio of diameters (that is, the ratio d2/do and the ratio of the weights of the hollow and solid shafts. 1
A steel shaft is to be manufactured either as a solid circular or as circular tube. The shaft is required to transmit a torque of 1200 Nm without exceeding an allowable shear stress of 40 MPa, nor an allowable rate of twist of 0.75º/m. For G = 78GPa, determine: The required diameter doof the solid shaft.g The required outer diameter d2of the hollow shaft if the thickness t of the shaft is specified as one-tenth of the outer diameter. 3.The ratio of diameters (that is, the ratio d2/do and the ratio of the weights of the hollow and solid shafts.
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The shaft ABC shown in the figure is drivenby a motor that delivers 300 kW at a rotational speedof 32 Hz. The gears at B and C take out 120 kW and180 kW, respectively. The lengths of the two parts ofthe shaft are L1 = 1.5 m and L2 = 0.9 m.Determine the required diameter d of the shaft ifthe allowable shear stress is 50 MPa, the allowableangle of twist between points A and C is 4.0°, andG = 75 GPa.
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