International Journal of Engineering and Manufacturing (IJEM)
IJEM Vol. 2, No. 2, 6 Apr. 2012
Cover page and Table of Contents: PDF (size: 186KB)
Study on Contact Fatigue Life Prediction for Clasp Joint Structure of Mooring Buoy
Full Text (PDF, 186KB), PP.29-35
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Author(s)
Zifan Fang
1,*
Daojia Du
1
Kongde He
1
Wenhui Shu
1
Qingsong He
1
Binfei Xiang
1
Huapan Xiao
1
Index Terms
Mooring buoys, multi-body contact, wave force, fatigue life
Abstract
This paper focuses on predicting the contact fatigue life of the mooring buoy clasp joint structure by using the finite element program ANSYS/Fatigue. Mises equivalent stress is choosed as a stress-related fatigue criterion. An evaluation method of fatigue life under the pressure of buoyancy and wave force is established for the mooring buoy clasp joint structure. Firstly, wave force is treated as Morison dynamic force here and mooring buoys vibration model is conducted to analyze the dynamic response characteristics of vertical vibration of the mooring buoy. Secondly, dynamic contact stress calculations are conducted by directly exerting calculated vibration loads on the mooring buoy, and the stress spectrums of nodes are obtained. Finally, the S-N material fatigue curve and the Miner linear cumulative damnification principle are commonly applied to evaluate the contact fatigue life of the mooring buoy. The results show that the finite element program ANSYS/Fatigue can solve the contact fatigue problem simply, economically and efficiently. It also provides an effective engineering analysis method for these kinds of fatigue problems of the underwater mooring buoy.
Cite This Paper
Zifan Fang, Daojia Du, Kongde He, Wenhui Shu, Qingsong He, Binfei Xiang, Huapan Xiao,"Study on Contact Fatigue Life Prediction for Clasp Joint Structure of Mooring Buoy", IJEM, vol.2, no.2, pp.29-35, 2012. DOI: 10.5815/ijem.2012.02.05
Reference
[1] Wang Qing-feng,He Li-dong. Analysis of fatigue life for contacting-type flexible seal on rotary air preheater based on ansys[J]. Thermal Power Generation, 2010, 39(1):32-35.(in Chinese)
[2] Wang Li-quan,Sun Zhi-juan,Meng Qing-xin. Finite element analysis for the contact problem of check ring joint structure in underwater skirt pile gripper[J]. Equipment Manufacturing Technology, 2006(4):9-11. (in Chinese)
[3] Liu Peng-fei,Zheng jin-yang,Sun guo-you. Fatigue lifetime evaluation of buried pipeling under internal pressure and vibrating loads[J]. Journal of Mechanical Strength, 2010, 32(1):125-129. (in Chinese)
[4] Liu Bao-xue. Fatigue reliability analysis of submarine pipe line under wave life force[J].Chemical Engineering & Equipment,2008(9):89-94. (in Chinese)
[5] Xu Jin,Shi Zhao-dong,Zhang Kang. Morison equation based fatigue life analysis of submarine pipe line[J]. Journal of Chengde Petroleum College, 2009, 11(4):21-23. (in Chinese)
[6] Hu Rongcai,Xu Bingye. Study of a new model for prediction of contact fatigue life[J]. Engineer Mechanics, 1994, 11(3):47-54. (in Chinese)
[7] Han Dong,Liu Fu-shun,Li Yan,Xu Hui-bin. Simulation calculation of the tie-in clasp stress of the TiNiFe SMA tube[J]. Acta Aeronautica et Astronautica Sinica, 2006, 27(4):703-707. (in Chinese)
[8] Liu Yong-shou,Zhi You-hai,Liu Jun,Yue Zhu-feng. Fatigue life(S-N) Analysis of Ti-Ni pipe joint for the piping system[J]. Aircraft Design, 2009, 29(2):13-17. (in Chinese)