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An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is:
- a)Decreased
- b)Increased or decreased, depending on the external bending load
- c)Neither decreased nor increased
- d)Increased
Correct answer is 'D'. Can you explain this answer?
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Verified Answer
An axial residual compressive stress due to a manufacturing process is...
The fatigue life of a rotating shaft subjected to bending will always be increased under residual axial compressive stress as it will reduce the tensile stress on fibre in one revolution and will increase the compressive stress during half revolution on same fibre.
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An axial residual compressive stress due to a manufacturing process is...
Explanation:
The axial residual compressive stress on the outer surface of the rotating shaft due to the manufacturing process will have an effect on the fatigue life of the shaft when subjected to bending. The effect can be either positive or negative depending on the magnitude of the residual stress and the external bending load. The options can be analyzed as follows:
a) Decreased: If the residual compressive stress is of high magnitude and the external bending load is also high, the combined stress on the shaft will exceed the yield stress, leading to premature failure. In such a case, the fatigue life of the shaft will be decreased due to the presence of the residual stress.
b) Increased or decreased, depending on the external bending load: This option is partially correct, as the effect of the residual stress on fatigue life is dependent on the external bending load. However, the residual stress will always have a positive effect on the fatigue life of the shaft, as long as it does not lead to excessive stress levels.
c) Neither decreased nor increased: This option is incorrect, as the presence of residual stress will always have an effect on the fatigue life of the shaft.
d) Increased: This is the correct option. In most cases, the presence of axial residual compressive stress will increase the fatigue life of the shaft when subjected to bending. This is because the residual stress acts as a compressive force that opposes the tensile stresses induced by the external bending load. As a result, the net stress on the shaft is reduced, leading to an increase in the fatigue life.
In conclusion, the effect of axial residual compressive stress on the fatigue life of a rotating shaft subjected to bending is dependent on the magnitude of the residual stress and the external bending load. However, in most cases, the presence of residual stress will have a positive effect on the fatigue life of the shaft.
The axial residual compressive stress on the outer surface of the rotating shaft due to the manufacturing process will have an effect on the fatigue life of the shaft when subjected to bending. The effect can be either positive or negative depending on the magnitude of the residual stress and the external bending load. The options can be analyzed as follows:
a) Decreased: If the residual compressive stress is of high magnitude and the external bending load is also high, the combined stress on the shaft will exceed the yield stress, leading to premature failure. In such a case, the fatigue life of the shaft will be decreased due to the presence of the residual stress.
b) Increased or decreased, depending on the external bending load: This option is partially correct, as the effect of the residual stress on fatigue life is dependent on the external bending load. However, the residual stress will always have a positive effect on the fatigue life of the shaft, as long as it does not lead to excessive stress levels.
c) Neither decreased nor increased: This option is incorrect, as the presence of residual stress will always have an effect on the fatigue life of the shaft.
d) Increased: This is the correct option. In most cases, the presence of axial residual compressive stress will increase the fatigue life of the shaft when subjected to bending. This is because the residual stress acts as a compressive force that opposes the tensile stresses induced by the external bending load. As a result, the net stress on the shaft is reduced, leading to an increase in the fatigue life.
In conclusion, the effect of axial residual compressive stress on the fatigue life of a rotating shaft subjected to bending is dependent on the magnitude of the residual stress and the external bending load. However, in most cases, the presence of residual stress will have a positive effect on the fatigue life of the shaft.
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An axial residual compressive stress due to a manufacturing process is...
From the Gerber’s parabola that is the characteristic curve of the fatigue life of the shaft in the presence of the residual compressive stress. The fatigue life of the material is effectively increased by the introduction of a compressive mean stress, whether applied or residual.
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An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is:a)Decreasedb)Increased or decreased, depending on the external bending loadc)Neither decreased nor increasedd)IncreasedCorrect answer is 'D'. Can you explain this answer?
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An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is:a)Decreasedb)Increased or decreased, depending on the external bending loadc)Neither decreased nor increasedd)IncreasedCorrect answer is 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is:a)Decreasedb)Increased or decreased, depending on the external bending loadc)Neither decreased nor increasedd)IncreasedCorrect answer is 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is:a)Decreasedb)Increased or decreased, depending on the external bending loadc)Neither decreased nor increasedd)IncreasedCorrect answer is 'D'. Can you explain this answer?.
An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is:a)Decreasedb)Increased or decreased, depending on the external bending loadc)Neither decreased nor increasedd)IncreasedCorrect answer is 'D'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is:a)Decreasedb)Increased or decreased, depending on the external bending loadc)Neither decreased nor increasedd)IncreasedCorrect answer is 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is:a)Decreasedb)Increased or decreased, depending on the external bending loadc)Neither decreased nor increasedd)IncreasedCorrect answer is 'D'. Can you explain this answer?.
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An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is:a)Decreasedb)Increased or decreased, depending on the external bending loadc)Neither decreased nor increasedd)IncreasedCorrect answer is 'D'. Can you explain this answer?, a detailed solution for An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is:a)Decreasedb)Increased or decreased, depending on the external bending loadc)Neither decreased nor increasedd)IncreasedCorrect answer is 'D'. Can you explain this answer? has been provided alongside types of An axial residual compressive stress due to a manufacturing process is present on the outer surface of a rotating shaft subjected to bending. Under a given bending load, the fatigue life of the shaft in the presence of the residual compressive stress is:a)Decreasedb)Increased or decreased, depending on the external bending loadc)Neither decreased nor increasedd)IncreasedCorrect answer is 'D'. Can you explain this answer? theory, EduRev gives you an
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