A practical method for combination of fatigue damage subjected to low-frequency and high-frequency Gaussian random processes

被引：24

作者：

Han, Chaoshuai ^{[1
]}

Ma, Yongliang ^{[1
]}

Qu, Xianqiang ^{[1
]}

Yang, Mindong ^{[2
]}

Qin, Peijiang ^{[1
]}

机构：

[1] Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Heilongjiang, Peoples R China

[2] China Energy Engn Grp, Guangdong Elect Power Design Inst CO LTD, Beijing, Peoples R China

来源：

APPLIED OCEAN RESEARCH | 2016年 / 60卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Combined fatigue damage; Gaussian random processes; Bimodal spectra; Rainflow cycle counting; MODEL;

D O I：

10.1016/j.apor.2016.08.007

中图分类号：

P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

This paper addresses the combination of fatigue damage for offshore steel structures subjected to low-frequency and high-frequency Gaussian components. Two new formulae (Eq. (25) and Eq. (38)) are developed. To verify the accuracy of the two formulae, extensive numerical simulations on bimodal spectra are carried out, and the results calculated by the two new formulae are satisfactory. In particular, compared with other methods (DNV methods, Huang-Moan method, Temple method, Combined spectrum approach, Jiao-Moan method, Low's bimodal method and Low-2014 method), one of two formulae (Eq. (38) in this paper) is accurate and simple enough and valid for a wide range, which shows a strong attraction for application in engineering design. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：47 / 60

页数：14

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