Problem 3 A solid shaft is designed to transmit 60kW of power at a speed of 300 rpm. Knowing that the shaft is made of 1015 Steel with e=28% and Sy 190 MPa.: a- Using an appropriate failure theory, find the required shaft diameter using a design factor of b- Select a preferred size for the shaft, from the table below, and calculate the factor of safety. Table A-17: Preferred Sizes

Problem 3 A solid shaft is designed to transmit 60kW of power at a speed of 300 rpm. Knowing that the shaft is made of 1015 Steel with e=28% and Sy 190 MPa.: a- Using an appropriate failure theory, find the required shaft diameter using a design factor of b- Select a preferred size for the shaft, from the table below, and calculate the factor of safety. Table A-17: Preferred Sizes

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 stepped shaft has dimensions of D = 2 in., d = 1 in., and r= 0.1 in. It is machined from AISI steel of 200 Bhn hardness. The load is fully reversed axial torsion. 30 seconds of time history of the nominal torsional stress in the 1 in, section of the shaft, Tnom(t) = Tr/J, is shown (dots indicate the beginning/end of each load cycle; there are 20 cycles total in 30 seconds.). This duty cycle continues repeating. (a) Use Miner's rule to estimate the life of the shaft in cycles. (b) What is the expected life in hours. Su 0.5HB for steel. 30 20 10 -10 -20 -30 30 seconds D=2 in. d=1 in. f= 0.1 in. 200 Bhn
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Required information The shaft shown in the figure is machined from AISI 1040 CD steel. The shaft rotates at 1600 rpm and is supported in rolling bearings at A and B. The applied forces are F₁ = 800 lbf and F2=1200 lbf. Determine the minimum fatigue factor of safety based on achieving infinite life. If infinite life is not predicted, estimate the number of cycles to failure. Also check for yielding -10 in- -10 is -fim All Gillets in R. What are the values of the theoretical stress-concentration factor, the notch sensitivity, and the fatigue stress-concentration factor? The value of the theoretical stress concentration-factor is The value of the notch sensitivity is. The value of the fatigue stress concentration-factor is [
Use the general shaft layout given and determine the critical diameters of the shaft based on infinite fatigue life with a design factor of 1.5. Check for yielding. Check the slopes at the bearings for satisfaction of the recommended limits in Table 7-2. Assume that the deflections for the pulleys are not likely to be critical. The material selected is 1050 Q and T. Given: Sut = 163 kpsi and Sy = 117 kpsi. Use the following shaft layout assuming a gear transmits torque through a key and keyseat at location A to another gear at location B. 16 in 14 in F3 9 in Gear A 20-in dia. Gear B 8-in dia. FA 300 lbf 20 A) Determine the location of the critical section on the shaft. B) If the shaft's loading is fully reversed and the torque between points A and B is constant, what are the values of the mean and alternating torques and the mean and alternating moments in lbf-in?
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