2. The Goodman diagram relates oa and om for fatigue failure after a specific numberof cycles N₁, where da is the cyclic stress amplitude, and on the mean stress. For asteel specimen it is found that a = a (0). [1- (om/OTS)] where GTS is the metal's tensilestress (375MPa), and oa (0)~0.450TS is the 107 cycle fatigue limit at zero mean stress.Assuming the specimen is cycled repeatedly between 0 stress and a peak stress, whatis the maximum peak stress if failure in < 107 cycles is to be avoided?Ans: 233 MPa

Given, Fatigue strength under zero mean stress , σa(0) = 0.45 σTS Tensile strength, σTS = 375…

2. The Goodman diagram relates oa and om for fatigue failure after a specific number of cycles N₁, where da is the cyclic stress amplitude, and on the mean stress. For a steel specimen it is found that oa oa (0). [1- (om/OTS)] where Ors is the metal's tensile stress (375MPa), and a (0)~0.450Ts is the 107 cycle fatigue limit at zero mean stress. Assuming the specimen is cycled repeatedly between 0 stress and a peak stress, what is the maximum peak stress if failure in < 107 cycles is to be avoided? Ans: 233 MPa

2. The Goodman diagram relates oa and om for fatigue failure after a specific number of cycles N₁, where da is the cyclic stress amplitude, and on the mean stress. For a steel specimen it is found that oa oa (0). [1- (om/OTS)] where Ors is the metal's tensile stress (375MPa), and a (0)~0.450Ts is the 107 cycle fatigue limit at zero mean stress. Assuming the specimen is cycled repeatedly between 0 stress and a peak stress, what is the maximum peak stress if failure in < 107 cycles is to be avoided? Ans: 233 MPa

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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