Figure P8.47 shows a portion of a pump that is gear-driven at uniform load and speed. The shaft is supported by bearings mounted in the pump housing. The shaft is made of steel having Su = 1000 MPa, S, = 800 MPa. The tangential, axial, and radial components of force applied to the gear are shown. The surface of the shaft fillet has been shot-peened, which is estimated to be equivalent to a laboratory mir- ror-polished surface. Fatigue stress concentration factors for the fillet have been determined and are shown on the drawing. Estimate the safety factor with respect to eventual fatigue failure at the fillet. 8.47 [Ans.: 1.9] 25-mm solid round shaft Bending Kf= 2.0 = 1.5 Torsional Kf Fillet Аxial Kf = = 1.8 750 N 2000 N 500 N Pump Helical spur gear 50 mm - 250-mm dia.

Figure P8.47 shows a portion of a pump that is gear-driven at uniform load and speed. The shaft is supported by bearings mounted in the pump housing. The shaft is made of steel having Su = 1000 MPa, S, = 800 MPa. The tangential, axial, and radial components of force applied to the gear are shown. The surface of the shaft fillet has been shot-peened, which is estimated to be equivalent to a laboratory mir- ror-polished surface. Fatigue stress concentration factors for the fillet have been determined and are shown on the drawing. Estimate the safety factor with respect to eventual fatigue failure at the fillet. 8.47 [Ans.: 1.9] 25-mm solid round shaft Bending Kf= 2.0 = 1.5 Torsional Kf Fillet Аxial Kf = = 1.8 750 N 2000 N 500 N Pump Helical spur gear 50 mm - 250-mm dia.

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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Concept explainers

Clutches, Brakes, Couplings, and Flywheels

The clutch is described as a machine element used to connect or disconnect two shafts together to transmit torque or power. The clutch works on the principles of friction. The clutch is commonly used in automobiles to transfer power from the driving shaft to the driven shaft.

Question

8.47
Figure P8.47 shows a portion of a pump that is gear-driven at uniform load and
speed. The shaft is supported by bearings mounted in the pump housing. The shaft
is made of steel having Su
radial components of force applied to the gear are shown. The surface of the shaft
fillet has been shot-peened, which is estimated to be equivalent to a laboratory mir-
ror-polished surface. Fatigue stress concentration factors for the fillet have been
determined and are shown on the drawing. Estimate the safety factor with respect to
eventual fatigue failure at the fillet.
1000 MPa, Sy
800 MPa. The tangential, axial, and
[Ans.: 1.9]
25-mm solid
Bending Kf= 2.0
Torsional Kf = 1.5
Axial Kf
round shaft
Fillet
%3D
= 1.8
750 N
2000 N
500 N
Pump
Helical
spur gear
50 mm
-250-mm dia.-
FIGURE P8.47
III

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