焊管Issue(1)：69-72,4.
波浪载荷作用下海洋平台用钢焊接接头的疲劳寿命预测
Fatigue Life Prediction of the Offshore Platform Steel Welded Joint under Wave Load
杜丽影 1邱保文 1薛欢 1刘冬 1彭志英 1余立1
作者信息
- 1. 武汉钢铁 集团 公司研究院，武汉 430080
- 折叠
摘要
Abstract
The influence of the initial crack shape on surface crack fatigue growth process of offshore platform welded joints was analyzed by finite element modeling, and the fatigue life of different shape initial crack of DH36 welded joint were predicted based on the FAD assessment methods of BS 7910. The results showed that the cracks of large c0/a0 ratio fast extended in the depth direction, and slow in the longitudinal direction at the beginning of the extension;the cracks of small c0/a0 ratio kept the approximate shape similar to the initial expansion in the expansion process. DH36 welded joint structure can withstand 105 252 cycles under the wave loads.关键词
焊接/DH36焊接接头/波浪载荷/有限元分析/疲劳寿命预测Key words
welding/DH36 welded joint/wave load/finite element analysis/fatigue life prediction分类
矿业与冶金引用本文复制引用
杜丽影,邱保文,薛欢,刘冬,彭志英,余立..波浪载荷作用下海洋平台用钢焊接接头的疲劳寿命预测[J].焊管,2015,(1):69-72,4.
