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| 从短期测量数据来生成疲劳载荷的一种实用算法的开发 | |
| 引用本文： | 李珊珊,黄志博,崔维成. 从短期测量数据来生成疲劳载荷的一种实用算法的开发[J]. 船舶力学, 2011, 15(3): 286-300 |
| 作者姓名： | 李珊珊 黄志博 崔维成 |
| 作者单位： | 上海交通大学海洋工程国家重点实验室,上海,200030;中国船舶科学研究中心,江苏,无锡,214082;上海交通大学海洋工程国家重点实验室,上海,200030;中国船舶科学研究中心,江苏,无锡,214082 |
| 基金项目： | Supported by the Innovative Scholars Support Program of Jiangsu Province (No.SBK 2008004,2008-2010) |
| 摘 要： | 疲劳寿命预报需要知道在全设计寿命期内的疲劳载荷时间历程或载荷谱的信息。但是,在很多情况下,实际测量或模拟的载荷时间历程与设计寿命相比只包含很短的一段时间。如何将测量的数据外插到更长的时间段以及如何计数出每周的信息是疲劳分析中必须要解决的两个重要问题。文中的主要目的就是介绍一种将实测载荷外插的方法以及雨流计数法。这两种方法均被编成相应的计算程序。一条水面船的实测数据用作例子来演示计算过程。最后对如何采用这两种方法来构建疲劳设计载荷问题也提出了思路。 |
| 关 键 词： | 载荷历程 雨流过滤器 载荷外插 载荷谱 雨流计数 |
On Implementing a Practical Algorithm to Generate Fatigue Loading History or Spectrum from Short Time Measurement |
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| LI Shan-shan,HUANG Zhi-bo,CUI Wei-cheng. On Implementing a Practical Algorithm to Generate Fatigue Loading History or Spectrum from Short Time Measurement[J]. Journal of Ship Mechanics, 2011, 15(3): 286-300 | |
| Authors: | LI Shan-shan HUANG Zhi-bo CUI Wei-cheng |
| Affiliation: | LI Shan-shan1,HUANG Zhi-bo2,CUI Wei-cheng1,2(1.State Key Lab of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200030,China,2.China Ship Scientific Research Center,Wuxi 214082,China) |
| Abstract: | Fatigue life prediction requires the information of fatigue loading history or spectrum over the whole design life.However,in many cases,the measured or simulated load history only includes a very short time compared to the entire design life.How to extrapolate the measured loads to longer time and how to count the information for every cycle are two important problems to be solved in fatigue analysis.In this paper,a method to extrapolate the measured loads to longer time is introduced together with the rai... |
| Keywords: | load history rainflow filter load extrapolation load spectrum rainflow cycle counting |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |