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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:材料科学与工程学院副院长
性别:男
毕业院校:哈尔滨工业大学
学位:博士
所在单位:材料科学与工程学院
办公地点:铸造中心208
联系方式:0411-84707970
电子邮箱:gqchen@dlut.edu.cn
Failure analysis of the turret bearings wear on SYS in the Bohai Bay area
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论文类型:期刊论文
发表时间:2017-08-01
发表刊物:ENGINEERING FAILURE ANALYSIS
收录刊物:SCIE、EI、Scopus
卷号:78
页面范围:134-146
ISSN号:1350-6307
关键字:Single point mooring; Eccentric wear; Failure analysis
摘要:In the China Bohai bay area, a Single anchor leg yoke mooring system (SYS) was mainly used for FPSO's permanent mooring due to the shallow water. This paper investigates the SYS failure and focus on the excessive wear that occurred to underwater turret bearings. The wear mechanism of bearing is researched by using morphology analysis and energy spectrum analysis. Nonlinear finite element analysis is performed to study the contact status between turret table and axial bearings considering the operational and extreme load condition. The comparison wear-test is carried out to clarify the contributions of eccentric load on the wear performance of axial bearing. Wear test results indicate that eccentric load has a significant impact on wear of turret bearings. Eccentric wear also produce more abrasive particles to accelerate wear rate. A step-like is formed on bearing plate surface due to excessive wear. The failed bolts am attributed to stress corrosion crack under long-term shear fore caused by vessel surge motion. (C) 2017 Elsevier Ltd. All rights reserved.