Influencing factor analysis for direct calculation of trimaran structure's fatigue strength

Chunbo ZHEN; Tianlin WANG; Pengyao YU

doi:10.3969/j.issn.1673-3185.2017.03.012

Volume 12 Issue 3

Turn off MathJax

Article Contents

Article Navigation > Chinese Journal of Ship Research > 2017 > 12(3): 86-90

Chunbo ZHEN, Tianlin WANG, Pengyao YU. Influencing factor analysis for direct calculation of trimaran structure's fatigue strength[J]. Chinese Journal of Ship Research, 2017, 12(3): 86-90. doi: 10.3969/j.issn.1673-3185.2017.03.012

Citation:

PDF( 2077 KB)

Influencing factor analysis for direct calculation of trimaran structure's fatigue strength

doi: 10.3969/j.issn.1673-3185.2017.03.012

College of Traffic Equipment and Ocean Engineering, Dalian Maritime University, Dalian 116026, China

Received Date: 2017-02-12
Available Online: 2017-05-12
Publish Date: 2017-06-01

Abstract

Abstract

According to the problem of a trimaran cross-deck structure's fatigue strength, taking one trimaran as an example, the responses of ship motion and hydrodynamic pressure on the ship's surface in regular waves are calculated on the basis of the 3D linear potential flow theory. Next, the stress responses of hot-spots in regular waves with different wave angles are evaluated by the finite element analysis of the global trimaran structure. On the basis of linear cumulative damage theories, the fatigue damage is calculated according to the direct calculate method using spectral analysis. Finally, the effect of different sea areas and heading angles' time factors are discussed. The results show that the fatigue damage is greater when using an inshore sea area and considering the time factors of heading angles. The result can offer a reference for the design and development of trimarans.
- trimaran,
- hot-spot stress,
- spectral analysis method,
- fatigue strength assessment

FullText(HTML)

References(14)

References

[1]	卢晓平, 郦云, 董祖舜.高速三体船研究综述[J].海军工程大学学报, 2005, 17(2):43-48, 52. http://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGZC200409001030.htm LU X P, LI Y, DONG Z S. A research summary on high speed trimaran[J]. Journal of Naval University of Engi-neering, 2005, 17(2):43-48, 52(in Chinese). http://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGZC200409001030.htm
[2]	刁端信, 谢延明.三体船及其在反水雷舰船上的应用探索[J].船舶, 2007(6):14-16. http://www.cnki.com.cn/Article/CJFDTOTAL-CBZZ200706005.htm DIAO D X, XIE Y M. Trimaran and its application on mine-countermeasure ship[J]. Ship and Boat, 2007(6):14-16(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-CBZZ200706005.htm
[3]	ARMSTRONG T. On the performance of a large high-speed trimaran[J]. Australian Journal of Mechan-ical Engineering, 2006, 3(2):121-131.
[4]	FANG M C, CHEN T Y. A parametric study of wave loads on trimaran ships traveling in waves[J]. Ocean Engineering, 2008, 35(8/9):749-762.
[5]	张文鹏, 宗智, 倪少玲, 等.三体船耐波性的模型试验研究[J].水动力学研究与进展, 2007, 22(5):619-624. http://www.cnki.com.cn/Article/CJFDTOTAL-SDLJ200705013.htm ZHANG W P, ZONG Z, NI S L, et al. Model testing of seakeeping performance of trimaran[J]. Journal of Hy-drodynamics, 2007, 22(5):619-624(in Chinese). http://www.cnki.com.cn/Article/CJFDTOTAL-SDLJ200705013.htm
[6]	Lloyd's Register. Rules for the classification of trima-rans[S]. Britain:Lloyd's Register, 2006.
[7]	Tony Armstrong. On the performance of a large high-speed trimaran[J]. Australian Journal of Mechan-ical Engineering, 2006, 3(2):123-132.
[8]	WANG Y G. Spectral fatigue analysis of a ship structur-al detail-a practical case study[J]. International Jour-nal of Fatigue, 2010, 32(2):310-317. doi: 10.1016/j.ijfatigue.2009.06.020
[9]	LOTSBERG I. Assessment of fatigue capacity in the new bulk carrier and tanker rules[J]. Marine Struc-tures, 2006, 19(1):83-96. doi: 10.1016/j.marstruc.2006.03.001
[10]	BENASCIUTTI D, TOVO R. Spectral methods for life-time prediction under wide-band stationary random processes[J]. International Journal of Fatigue, 2005, 27(8):867-877. doi: 10.1016/j.ijfatigue.2004.10.007
[11]	彭营豪. 三体船结构疲劳强度研究[D]. 哈尔滨: 哈尔滨工程大学, 2011: 42-43.
[12]	戴仰山, 沈进威, 宋竞正.船舶波浪载荷[M].北京:国防工业出版社, 2007. DAI Y S, SHEN J W, SONG J Z. Ship wave loads[M]. Beijing:National Defense Industry Press, 2007(in Chinese).
[13]	胡毓仁, 李典庆, 陈伯真.船舶与海洋工程结构疲劳可靠性分析[M].哈尔滨:哈尔滨工程大学出版社, 2010:110-114.
[14]	中国船级社. 船体结构疲劳强度指南[S]. 北京: 人民交通出版社, 2007. China Classification Society. Guide for fatigue strength of ship structures[S]. Beijing:China Commu-nication Press, 2007(in Chinese).