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Q4. A steel cantilever beam is of circular cross-section is subjected to a transverse load at its free end which varies from 45 N up to 135 N down. The strength properties are as follows: Ultimate strength 600 MPa, Yield strength = 360 MPa, Endurance limit = 300 MPa. The theoretical stress for %3D %3D 45 N 324 mm concentration factor bending is 1.5 and the notch sensitivity 0.8, at the change of cross-section. Take size factor 0.8 and surface finish factor = 0.9. Determine the required factor of safety for infinite life using Soderberg's formula as basis for design. (a = 2d d = 12 mm %3D 0.2d 466 mm

Q4. A steel cantilever beam is of circular cross-section is subjected to a transverse load at its free end which varies from 45 N up to 135 N down. The strength properties are as follows: Ultimate strength 600 MPa, Yield strength = 360 MPa, Endurance limit = 300 MPa. The theoretical stress for %3D %3D 45 N 324 mm concentration factor bending is 1.5 and the notch sensitivity 0.8, at the change of cross-section. Take size factor 0.8 and surface finish factor = 0.9. Determine the required factor of safety for infinite life using Soderberg's formula as basis for design. (a = 2d d = 12 mm %3D 0.2d 466 mm

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Q4. A steel cantilever beam is of circular cross-section is subjected to a transverse load at its free end which varies from 45 N up to 135 N down. The strength properties are as follows: Ultimate strength 600 MPa, Yield strength 360 MPa, Endurance limit = 300 MPa. The theoretical stress for 45 N 324 mm concentration factor bending is 1.5 and the notch sensitivity 0.8, at the change of cross-section. Take size factor = 0.8 and surface finish factor = 0.9. Determine the required factor of safety for infinite life using Soderberg's formula as basis for design. (n = 3) 2d d= 12 mm 0.2d 466 mm 135 N
Transcribed Image Text:Q4. A steel cantilever beam is of circular cross-section is subjected to a transverse load at its free end which varies from 45 N up to 135 N down. The strength properties are as follows: Ultimate strength 600 MPa, Yield strength 360 MPa, Endurance limit = 300 MPa. The theoretical stress for 45 N 324 mm concentration factor bending is 1.5 and the notch sensitivity 0.8, at the change of cross-section. Take size factor = 0.8 and surface finish factor = 0.9. Determine the required factor of safety for infinite life using Soderberg's formula as basis for design. (n = 3) 2d d= 12 mm 0.2d 466 mm 135 N
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