02/ An AISI 1020 Cold Drawn Steel shaft with the geometry shown in Figure below carries a transverse load of 7kN and a torque 107 N.m. The shaft has a nominal reliability 90% and fillet radius 2mm at every segment. What is the factor of safety guarding against the fatigue failure? 7 KN 155 375 All fillets 2 mm Dimensions in mm

02/ An AISI 1020 Cold Drawn Steel shaft with the geometry shown in Figure below carries a transverse load of 7kN and a torque 107 N.m. The shaft has a nominal reliability 90% and fillet radius 2mm at every segment. What is the factor of safety guarding against the fatigue failure? 7 KN 155 375 All fillets 2 mm Dimensions in mm

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter8: Applications Of Plane Stress (pressure Vessels, Beams, And Combined Loadings)

Section: Chapter Questions

Problem 8.5.28P: A crank arm consists of a solid segment of length bxand diameter rf, a segment of length bltand a...

See similar textbooks

Similar questions

Three round, copper alloy bars having the same length L but different shapes are shown, in the figure. The first bar has a diameter d over its entire length, the second has a diameter d over one-fifth of its length, and the third has a diameter d over one-fifteenth of its length. Elsewhere, the second and third bars have a diameter Id. All three bars are subjected to the same axial load P. Use the following numerical data: P = 1400 kN, L = 5m,d= 80 mm, E= 110 GPa. and v = 0.33. (a) Find the change in length of each bar. (b) Find the change in volume of each bar.
Repeat Problem 10.3-15 using L = 3.5 m, max = 3 mm, and EI = 800 kN·m2.
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 crank arm consists of a solid segment of length bxand diameter rf, a segment of length bltand a segment of length byas shown in the figure. Two loads P act as shown: one parallel to — vand another parallel to —y. Each load P equals 1.2 kN. The crankshaft dimensions are A] = 75 mm, fr> = 125 mm, and b3= 35 mm. The diameter of the upper shaft isd = 22 mm, (a) Determine the maximum tensile, compressive, and shear stresses at point A, which is located on the surface of the shaft at the z axis. (b) Determine the maximum tensile, compressive, and shear stresses at point B, which is located on the surface of the shaft at the y axis
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.
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
The sbaft shown overhangs a bearing on the right and has the following dimensions: a - 5 in., b - 4 in., and - 10 in. The material is AISI C1040. annealed. This shaft is subjected to a torque T 10,000 in-lb., forces F - 10,000 lb. and F, 20,000 lb. Using a atatio-design approach, determine the diameter D for N 2.5, with eomputa- %3D Answer: a) Dia. = _inches %3D %3D %3D tions from the maximum shear stress theory. Note: Use Sy = 48,000 psi F2 N M
Solve the following problems as stated below. Draw the figure and FBD. PROBLEM A flanged bolt coupling consist of 9 steel bolts evenly spaced around a bolt circle 300 mm. in diameter and 6 bronze bolts on a concentric bplt circle 200 mm. in diameter. What are the sizes of bolts diameters for steel and bronze, if the torque applied is 6,000 N-m and without exceeding the stress of 60 MPa in the steel and 40 MPa for the bronze? The ratio of the bolt diameter d, / ds = 0.50. For steel, use Gs = 83 GPa and for bronze, G, = 28 Gpa. %3D Rs Rp
Solve the following problems as stated below. Draw the figure and FBD. PROBLEM A flanged bolt coupling consist of 9 steel bolts evenly spaced around a bolt circle 300 mm. in diameter and 6 bronze bolts on a concentric bplt circle 200 mm. in diameter. What are the sizes of bolts diameters for steel and bronze, if the torque applied is 6,000 N-m and without exceeding the stress of 60 MPa in the steel and 40 MPa for the bronze? The ratio of the bolt diameter dp / ds = 0.50. For steel, use Gs = 83 GPa and for bronze, Gp = 28 Gpa. R Rs Rb
42. The static deflection at the center of the steel shaft in Fig. 3-53 is equal to 0.35 mm. Find the value of the critical speed. Shaft is steel. Ans. n = 1810 rpm. Design of Shafts Chap. 3 248 t. 50 30 1"dia 10" 10" Figure 3-52 Problem 41. 10 kg 10 kg C B 375 600 mm 375 Figure 3-53 Problem 42.
with diameter d = 38 mm transmits 37 kW to a gear Calculate the required speed of rotation (number of at B. The allowable shear stress in the steel is 40 MPa. X7-3 A motor driving a solid circular steel shaft revolutions per minute) so that the shear stress in the shaft does not exceed the allowable limit. Motor d = 38 mm B
Problem 2: F = 10 kip -10 in- -5 in- -5 in- d/5 R. R1 d/ 10 R. 1.4 d- R2 I in The shaft shown above rotates at 1200 RPM and supports a 10 kip load. The material of the shaft is 1095 hot-rolled steel and its surface is machined and then polished. Using a factor of safety of 1.6, specify the minimum value of diameter d for a life of 1,000 hours.