Fatigue assessment of ship structures based on equivalent wave probability (EWP) concept (1st report): Proposal of EWP concept and its verification by 8600TEU container ship's onboard hull monitoring

船体 贝叶斯定理 统计 贝叶斯推理 贝叶斯概率 联合概率分布 数学 结构工程 工程类 海洋工程
作者
Takaaki Takeuchi,Naoki Osawa,Akira Tatsumi,Tatsuo Inoue,Shinichi Hirakawa,Noriaki Seki,Tomomi Yoshida,Rei Miratsu,Shōzō Ikeda
出处
期刊:Marine Structures [Elsevier BV]
卷期号:91: 103476-103476 被引量:2
标识
DOI:10.1016/j.marstruc.2023.103476
摘要

A long-term fatigue assessment method based on EWP concept is proposed. 'Equivalent wave probability (EWP)' is the fictitious (HS, Tm)'s joint probability distribution function (JPDF), for which the frequency distribution of the stress variance R2, f(R2), calculated by spectral fatigue assessment agrees with the observed one. By choosing probability function p(R2) to fit f(R2), the R2's statistical model (R2SM) which represents the relation between the EWP parameters and R2's population parameters is developed, and the Bayesian inference, which can estimate the EWP parameters from the measured R2 data is developed. The EWP at the reference position (RP) can be determined by Bayesian inference from the measured R2 through the R2SM at RP. To accurately estimate the measured f(R2) at the target position (TP) from the EWP at RP, an R2SM correction factor at TP, denoted by αTP, is introduced in the process of assimilating R2SM. The resulting R2SM, which has been assimilated by Bayesian inference using measured data, is referred to as data-assimilated R2SM (DAR2SM). The fatigue assessment using EWP at RP as the input of DAR2SM at TP is called Bayes-EWP-DAR2SM analysis. The validity of Bayes-EWP-DAR2SM analysis is verified by using the long-term (about four years) multi(12)-position hull monitoring (HM) data of an 8,600TEU container ship. The fatigue damages estimated by Bayes-EWP-DAR2SM based solely on the stress history of a single sensor are in agreement with measurements with sufficient accuracy, independent of the chosen data assimilation period. This demonstrates that the multi-position fatigue assessment solely through HM at one RP based on EWP concept is realized.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
听寒完成签到,获得积分10
1秒前
珍珠火龙果完成签到 ,获得积分10
4秒前
似水流年完成签到 ,获得积分10
5秒前
sysi完成签到 ,获得积分10
20秒前
绿波电龙完成签到,获得积分10
21秒前
24秒前
ZZzz完成签到 ,获得积分10
25秒前
wujiwuhui发布了新的文献求助10
29秒前
31秒前
梦梦的小可爱完成签到 ,获得积分10
31秒前
xinjie发布了新的文献求助10
34秒前
36秒前
蛋花肉圆汤完成签到,获得积分10
36秒前
羞涩的文轩完成签到 ,获得积分10
37秒前
42秒前
43秒前
北城完成签到 ,获得积分10
45秒前
量子星尘发布了新的文献求助10
45秒前
48秒前
爱听歌电灯胆完成签到 ,获得积分10
48秒前
不爱吃西葫芦完成签到 ,获得积分10
49秒前
申燕婷完成签到 ,获得积分10
50秒前
橙子完成签到 ,获得积分10
52秒前
ruochenzu发布了新的文献求助10
52秒前
fusheng完成签到 ,获得积分10
1分钟前
浮生完成签到 ,获得积分10
1分钟前
xinjie完成签到,获得积分10
1分钟前
Will完成签到,获得积分10
1分钟前
cuddly完成签到 ,获得积分10
1分钟前
掉头发的小白完成签到,获得积分10
1分钟前
不想看文献完成签到 ,获得积分10
1分钟前
1分钟前
当女遇到乔完成签到 ,获得积分10
1分钟前
独行者完成签到,获得积分10
1分钟前
眼睛大的电脑完成签到,获得积分10
1分钟前
1分钟前
敏敏发布了新的文献求助10
1分钟前
木木完成签到 ,获得积分10
1分钟前
量子星尘发布了新的文献求助10
1分钟前
JamesPei应助科研通管家采纳,获得10
1分钟前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038066
求助须知:如何正确求助?哪些是违规求助? 3575779
关于积分的说明 11373801
捐赠科研通 3305584
什么是DOI,文献DOI怎么找? 1819239
邀请新用户注册赠送积分活动 892655
科研通“疑难数据库(出版商)”最低求助积分说明 815022