F = 941.2 NØ 192Solution:20Ø = 250100Jog120NFigure 180FOL= 452.8 NyFDT=1131.8 NAll length units in mm Topic - Design from Failure Prevention Principle (Fatigue Loading Analysis)A power transmission shaft ABCD subjected to fatigue loading is to be designed withcomponents as shown in Figure 1 by using two bearings at A and C as points of support,respectively. The engine power exerts onto the spur gear (192 mm diameter, weighs 8kg) at B, a net force with magnitude FB = 941.2 N at 20° angle relative to x-y plane. Thepower-receiving pulley at D (250 mm diameter, weighs 10 kg) produces two tensionalloads FDT = 1,131.8 N and FDL = 452.8 N on the tight and loose side of the belt,respectively.The shaft material is expected to be machined from high-strength hot-rolled steel alloywith Sut= 1,000 MPa and Sy = 770 MPa. All fillets and corners susceptible to stressconcentrating effect are maintained at r = 3 mm with the resulting geometrical-dependentstress concentration factors in normal and shear directions of k = 1.7 and Kts = 1.35,respectively. The shaft reliability to fatigue load is targeted at 90% with safety factor forfatigue design, nr = 2 is specified to the system.Design a minimum required diameter for the shaft based on operational parameters asprescribed above following that of ASME-Elliptic criterion of fatigue loading. As shaftdiameter is the unknown quantity, use a coefficient to modify the endurance limit due ofsize factor, kb = 0.8499.

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Design a minimum required diameter for the shaft based on operational parameters as prescribed above following that of ASME-Elliptic criterion of fatigue loading. As shaft diameter is the unknown quantity, use a coefficient to modify the endurance limit due of size factor, kb = 0.8499.

Design a minimum required diameter for the shaft based on operational parameters as prescribed above following that of ASME-Elliptic criterion of fatigue loading. As shaft diameter is the unknown quantity, use a coefficient to modify the endurance limit due of size factor, kb = 0.8499.

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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