SHIGLEY'S MECH.ENGIN....(LOOSE)>CUSTOM<
10th Edition
ISBN: 9781260163155
Author: BUDYNAS
Publisher: MCG CUSTOM
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Textbook Question
Chapter 7, Problem 28P
A 25-mm-diameter uniform steel shaft is 600 mm long between bearings
- (a) Find the lowest critical speed of the shaft.
- (b) If the goal is to double the critical speed, find the new diameter.
- (c) A half-size model of the original shaft has what critical speed?
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Figure below shows a rotating shaft simply supported in ball bearings at A and D and loaded by a nonrotating
orce Fof 6.8 kN. Using ASTM "minimum" strengths, estimate the life of the part.
6T
td7 (a) Shaft drawing showing all dimensions in millimeters;
all fillets 3-mm radius. The shaft rotates and the load
is stationary; material is machined from AISI 1050
cold-drawn steel.
(b) Bending moment diagram.
Solve the following problems and SHOW YOUR COMPLETE SOLUTIONS FOR BETTER UNDERSTANDING
Please hel me solve this asap. Thank you!!
Chapter 7 Solutions
SHIGLEY'S MECH.ENGIN....(LOOSE)>CUSTOM<
Ch. 7 - A shaft is loaded in bending and torsion such that...Ch. 7 - The section of shaft shown in the figure is to be...Ch. 7 - The rotating solid steel shaft is simply supported...Ch. 7 - A geared industrial roll shown in the figure is...Ch. 7 - Design a shaft for the situation of the industrial...Ch. 7 - The figure shows a proposed design for the...Ch. 7 - For the problem specified in the table, build upon...Ch. 7 - Prob. 8PCh. 7 - For the problem specified in the table, build upon...Ch. 7 - For the problem specified in the table, build upon...
Ch. 7 - In the figure is a proposed shaft design to be...Ch. 7 - The shaft shown in the figure is proposed for the...Ch. 7 - Prob. 20PCh. 7 - The shaft shown in the figure is proposed for the...Ch. 7 - Prob. 25PCh. 7 - Prob. 26PCh. 7 - Prob. 27PCh. 7 - A 25-mm-diameter uniform steel shaft is 600 mm...Ch. 7 - Prob. 29PCh. 7 - Compare Eq. (727) for the angular frequency of a...Ch. 7 - Prob. 31PCh. 7 - The steel shaft shown in the figure carries a...Ch. 7 - A transverse drilled and reamed hole can be used...Ch. 7 - Prob. 34PCh. 7 - The shaft shown in Prob. 721 is proposed for the...Ch. 7 - A guide pin is required to align the assembly of a...Ch. 7 - Prob. 37PCh. 7 - Prob. 38PCh. 7 - Prob. 39PCh. 7 - A ball bearing has been selected with the bore...Ch. 7 - Prob. 41PCh. 7 - A gear and shaft with nominal diameter of 35 mm...
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- QUESTION 10 Estimate the shaft diameter required to produce a critical speed of rotation of 638 rpm for a steel shaft of total length L= 44 in. that carries a center load of 111 lb as shown in the figure below. The shaft is located at C, as shown in Figures 1 and 3. Submit your answer in millimeters. Steel shaft H Larrow_forwardDesign a hallow shaft (Diameter and length) that develops 80 kN of power while rotating at a speed of 4000 rpm. The design constrains are as under: The angle of twist not to exceed 0.200 Shear stress is not to exceed 480 MN/m? The outer diameter is to be twice the inner diameter. The shaft length is to be three times the outer diameter. Modulus of rigidity = 79 GN/m?.arrow_forwardPlease I want answer of that question from these choicesarrow_forward
- A motor is used to drive a gear assembly at 200 rpm. The main gear is in the center of a 1 m long (0.5 m to the left and right of the gear) 50 mm diameter solid circular shaft, and power is taken from the two shaft ends. 25 kW is taken on the left end and an unknown amount of power is taken at the right end. the torque to the left side of the gear is? maximum shear stress to left of gear? If the maximum shear stress on the shaft to the right of the gear is 125 MPa, approximately how much power is being drawn off from the right side of the shaft? The shaft can be made from 6061-T6 aluminum. It has adequate strength to withstand the loading conditions in the scenario, including the loading on the right side of the shaft. true or false?arrow_forwardMulti part question The rotating shaft shown is subjected to a constant force. Shaft material is AISI 1020 cold drawn steel. The shaft was turned on a lathe using standard carbide tooling. No heat treatment of the shaft was performed. Assume 99% reliability based on material property data. Shaft dimensions are shown in the illustration below. All dimensions in mm. External force is 3.927 kN. Calculate the highest alternating stress in the shaft, in MPa. -20 -35 D. 180- -500 3R. -280- -175- -50 D. 25 D.arrow_forward3. A steel shaft 60 in. long has applied to it a 10,000 in-lb torque by a pulley located at the center of the shaft. A gear at the left end of the shaft applies 8000 in-lb of torque to the shaft while a gear located 9 in. to the left of the right end of the shaft applies 2000 in-lb of torque. Calculate the angular deflection of the shaft if the shaft is 2 in. in diameter for a length of 36 in. from the left end of the shaft and 1.5 in. in diameter in the remainder of the shaft. Neglect the effect of the keyways in the calculations. Ans. 0.424oarrow_forward
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- 3. A 25-mm-diameter uniform steel shaft (E=207GPA, Y=76.5*10°N/m3) is 600 mm long between bearings. (a) Find the lowest critical speed of the shaft. (b) If the goal is to double the critical speed, find the new diameter. (c) A half-size model of the original shaft has what critical speed?arrow_forwardI have a 52100 steel hollow shaft, that will be threaded into a 1 inch thick plate of aluminum 7075. The shaft is 960 mm in length, 40 mm OD and 20 mm ID. The threaded end of the shaft is M30X3.5. What would be the recommended torque for the shaft, with the dissimilar metals. I’m expecting a range between 100-280 ft-lbs but can justify it.arrow_forwardAnswer the following problem. Show your complete solution. Use 4 decimal places. Calculate the diameter of the shaft required to transmit 45 kw at 120 rpm. The maximum torque is likely to exceed the mean by 30% for a maximum permissible shear stress of 55. Calculate also the angle of twist for a length of 2m.arrow_forward
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