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Dynamic Stress Analysis of the Leg Joints of Self-Elevating Platform
Abstract：Since a self-elevating platform often works in water for a long time, the lattice leg is largely influenced by wave and current. The amplitude of leg joint stresses is a very important factor for the fatigue life of the platform. However, there are not many researches having been done on the mechanism and dynamic stress analysis of these leg joints. This paper focuses on the dynamic stress analysis and suppression methods of the leg joints of self-elevating platforms. Firstly, the dynamic stresses of the lattice leg joints are analyzed for a self-elevating platform by use of the 5th-order Stokes wave theory. Secondly, the axial and bending stresses are studied due to their large contributions to total stresses. And then, different joint types are considered and the leg-hull interface stiffness is analyzed for the improvement of the joint dynamic stress amplitude. Finally, some useful conclusions are drawn for the optimization design of the self-elevating platform. 作者： Author： HUANG Zhao-yu[1] TANG Wen-yong[2] WANG Yi[3] WANG Wen-tao[3] 作者单位： State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University,Shanghai 200030, China;Shanghai Zhenhua Heavy Industry Co. Ltd, Shanghai 200125, ChinaState Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University,Shanghai 200030, ChinaShanghai Zhenhua Heavy Industry Co. Ltd, Shanghai 200125, China 期 刊： 中国海洋工程(英文版) ISTICEISCI Journal： CHINA OCEAN ENGINEERING 年，卷(期)： 2011, 25(2) 分类号： P75 Keywords： self-elevating platform leg joint dynamic stress stress amplitude improvement 机标分类号： P5 TH1 机标关键词： Stress Analysis dynamic stress analysis optimization design fatigue life joint types methods of interface different wave However focuses works total paper drawn time long 基金项目： This study was supported by the Shanghai Science Foundation of Important Projects for Post Doctoral Research,China【Dynamic Stress Analysis of the Leg J】相关文章：
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