Fatigue crack in large-scale tubular joints for offshore structures

作     者：Chul-Hee JO Sung-Woo IM Won-Chul CHO Kwan-Kyu PARK 

作者机构：Department of Naval Architecture and Ocean Engineering Inha University Research Institute of Industrial Science and Technology Department of Civil & Environmental Engineering Chung-Ang University Samsung Heavy Industry Inc. 

基　　金：supported by Inha University 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2011年第54卷第3期

页      码：705-714页

摘      要：Tubular members have been used for constructing offshore structures. Large-scale fatigue tests of welded tubular K-joints under the balanced in-plane bending brace were carried out to investigate the fatigue behavior of API 2W Gr.50 steel produced by POSCO. The experimental results were verified by numerical approaches and compared with the IIW, DnV RP-C203 and API RP 2A-WSD design curves. The test results based on the hot spot stress were in agreement with the design curves. The SCF factor for tubular K-joint was also obtained. The numerical parametric study of the K-joint (using the finite element program) was described and its results were compared with experimental results. The stress effects of various parameters including α, β, γ, τ and θ on the stress in the K-joint were investigated. The stress distribution for each parameter was introduced. The study showed that the maximum stress of the joint varied according to the variation of joint parameters.

主 题 词：海洋结构物 疲劳裂纹 管接头 热点应力 设计曲线 弯曲试验机 挪威船级社 有限元程序 

学科分类：0810[工学-土木类] 08[工学] 0805[工学-能源动力学] 0702[理学-物理学类] 0812[工学-测绘类] 0823[工学-农业工程类] 

核心收录：

D　O　I：10.1007/s11431-010-4275-y

馆 藏 号：203518524...