Open AccessTheoretical and Numerical Analysis of the Fatigue Strength of Mechanical Material and Part under Uniaxial Stress
Author(s) -
Zehao Yang,
Yiyong Yang,
Jianyong Li,
Linhong Ji,
Jia Cheng
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2101/1/012043
Subject(s) - vibration fatigue , structural engineering , goodman relation , fatigue limit , stress (linguistics) , fatigue testing , materials science , perspective (graphical) , stress concentration , numerical analysis , finite element method , computer science , engineering , mathematics , mathematical analysis , linguistics , philosophy , artificial intelligence
To characterize the fatigue strength of mechanical material and part, a methodology combining the fatigue damage theory with the numerical simulation is proposed under three types of uniaxial loads. The equal-life fatigue curve of a shaft is used for the theoretical and numerical analysis of fatigue damage. Its theoretical fatigue strengths under different loadings are gained through theory equations. Utilizing the mean stress correction method, the stress distribution and fatigue life of the shaft are obtained through the collaborative simulation of ANSYS and nCode software. Consequently, the resultant fatigue lives are all within the value band of basic cycle number as demanded in practice, implying the correction and validation of theory analysis. The proposed strategy provides a new pathway and perspective for the analysis of fatigue damage.