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Articles:2018,Vol:23,Issue(2):65-70 |
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Citation: |
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LIU Yujie, DAI Zongmiao. Study on Prediction Method of Structural Three-parameter Power Function P-S-N Curve[J]. International Journal of Plant Engineering and Management, 2018, 23(2): 65-70 |
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| Study on Prediction Method of Structural Three-parameter Power Function P-S-N Curve |
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| LIU Yujie, DAI Zongmiao |
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| The 713 Research Institute, China Shipbiulding Industry Corporation, Zhengzhou 450015, China |
| Abstract: |
| This paper applies weighted least square method to estimate the three-parameter power function equation of the fatigue life curve, and uses comprehensive fatigue life coefficient to correct the equation, and at the same time combines probability statistics method to bring out the prediction method of structure's three-parameter power function P-S-N curve, finally applies the prediction method to a ship's frame-type elevate, based on the fatigue test data of it's material-5A06 aluminium alloy, to obtain it's structure's three-parameter power function P-S-N curve. Compared with the conventional least square method, the presented method can give a rational estimation due to it's a best linear unbiased estimator, and this method has stronger practicality in engineering, and can be used in many structures of different materials, for achieving their three-parameter power function P-S-N curve. |
| Key words:
P-S-N curve
comprehensive fatigue life coefficient
three-parameter power function
fatigue life
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| Received: 2017-12-18
Revised:
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| DOI: 10.13434/j.cnki.1007-4546.2018.0201 |
| Corresponding author:
Email： |
Author description: LIU Yujie is an engineer of the 713 Research Institute, China Shipbiulding Industry Corporation. His research interests include structural design and fatigue analysis. liuyujie05@163.com
DAI Zongmiao is professor of the 713 Research Institute, China Shipbiulding Industry Corporation. His research interests include structural design and weapon launch theory. 348163909@qq.com
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References: |
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[1] Tang J, Zhao J. A practical approach for predicting fatigue reliability under random cyclic loading[J]. Reliability Engineering & System Safety, 1995, 50(1):7-15
[2] Ling J, Pan J. An engineering method for reliability analyses of mechanical structures for long fatigue lives[J]. Reliability Engineering & System Safety, 1997, 56(2):135-142
[3] Chen J Q, Hen G J, Chen F F, et al. Research on box-cox variable transform fitting method for estimating three parameter P-S-N curves[J]. Journal of Mechanical Strength, 2011, 33(3):358-362(in Chinese)
[4] Xie J B,Yao W X. Double weighted least square method for P-S-N curve regression[J]. Journal of Experimental Mechanics, 2010, 25(5):611-616(in Chinese)
[5] Tan X M, Zhao W Y, Liu Z G, et al. P-S-N curve for two different steel welded steel joints[J]. Science Technology and Engineering, 2011, 11(21):5188-5190(in Chinese)
[6] Chen X Y, Zhou D C, Zhang C J, et al. Determination of the P-S-N curve of d32 steel with fatigue life test of small sample based on the bootstrap method[J]. Journal of Mechanical Strength, 2014(4):600-604(in Chinese)
[7] Xiong J J, Shenoi R A. A practical randomization approach of deterministic equation to determine probabilistic fatigue and fracture behaviours based on small experimental data sets[J]. International Journal of Fracture, 2007, 145(4):273-283
[8] Wei Z, Kurth R E, Forte T P. Probabilistic approach for fatigue life assessment based on SN curve[C]//ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. American Society of Mechanical Engineers, 2010:677-685
[9] Fu H M, Liu C R. Small sample test method for S-N and P-S-N curves[J]. Journal of Mechanical Strength, 2006, 28(4):552-555(in Chinese)
[10] Yin Z P. Structure fatigue and fracture[M]. Xi'an:Northwestern University of Technology Press, 2012(in Chinese)
[11] Fu H M, Gao Z T, Liang M X. A method for fitting P-S-N curve[J]. Acta Aeronautica Et Astronautica Sinica, 1988, 9(7):338-341(in Chinese)
[12] Zhao Y X, Wang J N, Gao Q. Unified conventional method for estimating P-S-N curves and their confidence Bound[J]. Journal of Mechanical Strength, 2000, 22(3):217-221(in Chinese)
[13] Li H S, Lv Z Y. New method for estimating fatigue life threeparameter P-S-N curves[J]. Journal of Mechanical Strength, 2007, 29(2):300-304(in Chinese)
[14] Li S M. Mechanical fatigue and reliability design[M]. Beijing:Science Press, 2006(in Chinese)
[15] Gao Z T. Fatigue performance test design and data processing[M]. Beijing:Beijing University Aeronautics and Astronautics Press, 1999(in Chinese)
[16] Mao S S, Wang J L, Pu X L. Higher mathematical statistics[M]. Beijing:Higher Education Press, 1998(in Chinese)
[17] Fatemi A, Fang D, Zeng Z. Notched fatigue behavior under axial and torsion loads:experiments and predictions[C]//Proceedings of Fatigue, 2002:1905-1914
[18] Zhao S B. Anti-fatigue design-methods and data[M]. Beijing:Machinery Industry Press, 1997(in chinese) |
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