A multiaxial local stress-strain approach based on the Armstrong-Frederick type cyclic plasticity theory was proposed to perform the stress analysis and the fatigue analysis on the notched components. A robust cyclic plasticity model was adopted to describe the non-Masing behavior of 16MnR steel. The incremental form of the multiaxial local stress-strain approach was formulated with the incremental constitutive relations and the incremental Neuber’s rule. The multiaxial stress-strain state at the notch root of notched components subjected to proportional and nonproportional loading was predicted by the multiaxial approximate approach. On the basis of the multiaxial local stress-strain state and the Fatemi-Socie criterion, the fatigue lives of the notched components were predicted. The analytical results show that the proposed multiaxial local stress-strain method can describe the multiaxial stress state at the notch root very well, and the predicted fatigue lives correlate well with the experimental data.
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ASME 2009 Pressure Vessels and Piping Conference
July 26–30, 2009
Prague, Czech Republic
Conference Sponsors:
- Pressure Vessels and Piping
ISBN:
978-0-7918-4369-7
PROCEEDINGS PAPER
Fatigue Life Prediction of Notched Components Based on Multiaxial Local Stress-Strain Approach
Baoxiang Qiu,
Baoxiang Qiu
Zhejiang University of Technology; The Key Laboratory of Pharmaceutical Engineering of Ministry of Education, Hangzhou, Zhejiang, China
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Zengliang Gao,
Zengliang Gao
Zhejiang University of Technology; The Key Laboratory of Pharmaceutical Engineering of Ministry of Education, Hangzhou, Zhejiang, China
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Xiaogui Wang
Xiaogui Wang
Zhejiang University of Technology, Hangzhou, Zhejiang, China
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Baoxiang Qiu
Zhejiang University of Technology; The Key Laboratory of Pharmaceutical Engineering of Ministry of Education, Hangzhou, Zhejiang, China
Zengliang Gao
Zhejiang University of Technology; The Key Laboratory of Pharmaceutical Engineering of Ministry of Education, Hangzhou, Zhejiang, China
Xiaogui Wang
Zhejiang University of Technology, Hangzhou, Zhejiang, China
Paper No:
PVP2009-78002, pp. 183-189; 7 pages
Published Online:
July 9, 2010
Citation
Qiu, B, Gao, Z, & Wang, X. "Fatigue Life Prediction of Notched Components Based on Multiaxial Local Stress-Strain Approach." Proceedings of the ASME 2009 Pressure Vessels and Piping Conference. Volume 6: Materials and Fabrication, Parts A and B. Prague, Czech Republic. July 26–30, 2009. pp. 183-189. ASME. https://doi.org/10.1115/PVP2009-78002
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