本文采用谱分析法对船舶进行疲劳强度评估，论述了谱分析法的基本原理。以1艘大型集装箱船为例，利用MSC.Patran软件进行全船有限元建模，采用三维线性势流软件Compass-Walcs进行波浪载荷计算，通过PCL语言完成波浪载荷及舱室惯性力的自动加载，结合S-N曲线和Miner线性累积损伤理论对大型集装箱船的典型部位进行疲劳强度评估。
This paper adopts the spectral method to do the fatigue strength evaluation and the principles of spectral method is discussed. As a large container ship for example, the FEM model of global ship is built by MSC.Patran, the wave load is calculated by three-dimension linear potential flow software Compass-Walcs, the wave load and cargo inertia force is automatically applied by using PCL language. The fatigue strength evaluation for typical structures of large container ship is performed based on S-N curve and the principles of Miner linear accumulation damage.
2017,39(7): 60-64 收稿日期：2016-08-22
DOI：10.3404/j.issn.1672-7649.2017.07.012
分类号：U662.2
作者简介：王建辉(1991-),男,硕士研究生,研究方向为船舶与海洋工程结构强度与环境载荷
参考文献：
[1] CLARK J D, Fatigue crack initiation and propagation in warship hulls. In Smith C S and Row R S (eds), Advances in Marine Structures, Elsevier Science Publishers Ltd, 1991:42–60.
[2] CLARK J D, Prediction of fatigue cracking in warship hulls. PRADS’ 87, Trondheim, Norway, June 1987:718–728.
[3] J.J.W Nibbering. Structure Safety and Fatigue of Ships. Int. Shipbuild. Progr.39, No420(1991):423–435.
[4] 冯国庆. 船舶结构疲劳强度评估方法研究[D]. 哈尔滨: 哈尔滨工程大学, 2006.
[5] 戴仰山, 沈进威, 宋竞正, 等. 船舶波浪载荷[M]. 北京: 国防工业出版社, 2007. 164–166.
[6] 中国船级社. 船体结构疲劳强度指南[M]. 北京: 人民交通出版社, 2014.
[7] 戴遗山, 段文洋. 船舶在波浪中运动的势流理论[M]. 北京: 国防工业出版社, 2008.
[8] BV. Guidelines for structural analysis of container ships [S]. 2008.
