Research of Springing and Whipping Influence on Ultra-Large Containerships’ Fatigue Analysis

被引：8
作者：
Ren H. [1 ]
Zhang K. [1 ]
Li H. [1 ]
机构：
[1] College of Shipbuilding Engineering, Harbin Engineering University, Harbin
来源：
Zhang, Kaihong (jack194988@163.com) | 2018年 / Shanghai Jiaotong University卷 / 23期
关键词：
A; fatigue analysis; hydroelasticity; springing; U; 661; whipping;
D O I：
10.1007/s12204-018-1956-3
中图分类号：
学科分类号：
摘要：
Rules of Classification Societies all around the world have made changes on design wave loads’ value and fatigue influence factor modification due to the influence of springing and whipping on ultra-large containerships. The paper firstly introduced 3-D linear hydroelastic theory in frequency domain and 3-D nonlinear hydroelastic theory in time domain, considering large amplitude motion nonlinearity and slamming force due to the severe relative motion between ship hull and wave. Then the spectrum analysis method and time domain statistical analysis method were introduced, which can make fatigue analysis under a series of standard steps in frequency and time domain, respectively. Finally, discussions on the influence factor of springing and whipping on fatigue damages of 8500TEU and 10000TEU containerships with different loading states were made. The fatigue assessment of different position on the midship section was done on the basis of nominal stress. The fatigue damage due to whipping can be the same as the fatigue damage due to springing and even sometimes can be larger than the springing damage. Besides, some suggestions on calculating load case selection were made to minimize the quantity of work in frequency and time domain. Thus, tools for fatigue influence factor modification were provided to meet the demand of IACS-UR. © 2018, Shanghai Jiaotong University and Springer-Verlag GmbH Germany, part of Springer Nature.
引用
收藏
页码：429 / 437
页数：8
相关论文
共 15 条
  • [11] Olagnon M., Guede Z., Rainflow fatigue analysis for loads with multimodal power spectral densities [J], Marine Structures, 21, 2-3, pp. 160-176, (2008)
  • [12] Jiao G., Moan T., Probabilistic analysis of fatigue due to Gaussian load processes [J], Probabilistic Engineering Mechanics, 5, 2, pp. 76-83, (1990)
  • [13] Rathje H., Kahl A., Schellin T.E., Highfrequency ship response assessment of large containerships [J], International Journal of Offshore and Polar Engineering, 22, 2, pp. 115-122, (2012)
  • [14] Seng S., Slamming and whipping analysis of ships [D], (2012)
  • [15] Wirsching P.H., Shehata A.M., Fatigue under wide band random stresses using the rain-flow method [J], Journal of Engineering Materials and Technology, 99, 3, pp. 205-211, (1977)
12