Notch Effect in Low-Cycle Fatigue : 2nd Report, Considerations on Notch Effect in Low-Cycle Fatigue with Finite Element Method

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概要

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• The paper describes a supplementary investigation on the authors' former work concerning the notch effect in low-cycle fatigue of metals ( 1st Report on the same subject ), and presents another approach to the subject. The approach is such that an elastic-plastic analysis with the finite element method is made about a notched region of a member on the basis of the cyclic stress-strain relation of the material which is obtained under cyclic loading, and the peak value of strain range thus estimated at the notch is taken good as a measure for predicting the crack initiation life. In order to verify the validity of the proposed method in evaluating the notch effect on the low-cycle fatigue, calculations with the finite element method on several notched members, measurements of notch root strains under monotonic and cyclic loadings and low-cycle fatigue tests on smooth and notched specimens were performed. By the comparison of the calculations and tests, the proposed method for the elastic-plastic analysis and for the evaluation of the notch effect was verified to be valid.

• 一般社団法人日本機械学会の論文

著者

• Udoguchi Teruyoshi

  Faculty Of Engineering University Of Tokyo

• NOZUE Yasuhiro

  Department of Mechanical Engineering, University of Tokyo

• Nozue Yasuhiro

  Department Of Mechanical Engineering University Of Tokyo

関連論文

• Notch Effect in Low Cycle Fatigue : 1st Report, Some Considerations on Fatigue Strength Reduction Factor by Round-Bar Specimens with Circumferential Notches
• An Error Analysis of Various Finite Element Patterns
• Notch Effect in Low-Cycle Fatigue : 2nd Report, Considerations on Notch Effect in Low-Cycle Fatigue with Finite Element Method

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